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Dow Adhesive and Sealant Blog
Dow Adhesive and Sealant Blog
The world has seen many disruptions since the onset of the pandemic, and climate change is no exception. The initial lockdown might have led to a fall in global carbon emissions, but most countries have also returned to pre-pandemic trends as the economy picks up this year. Based on a scientific report by the Global Carbon Project, carbon dioxide emissions will rise by 4.9 percent this year and may be expected to increase further. This rapid recovery from the 5.4 percent dip in 2020 surprised scientists globally, reinforcing the need for immediate action to be taken against climate change.
According to the Intergovernmental Panel on Climate Change (IPCC), achieving drastic reductions in carbon emissions is necessary to keep global temperature rise to 1.5℃. Today, the world has already warmed 1.1℃ and exceeding the recommended limit of 1.5℃ of warming would risk accelerating severe environmental impacts, such as more destructive storms and deadlier wildfires. Thus, this calls for coordinated action from different countries and sectors. Currently, the building sector contributes approximately 39 percent of global carbon dioxide emissions, and that includes both embodied carbon and building operations.
Apart from industry efforts to develop net zero carbon buildings, DOWSIL™ is pioneering the launch of the world’s very first carbon-neutral silicones to decrease the amount of carbon embodied in construction materials. These silicone solutions are best suited for structural glazing, insulating glass and weather sealing, allowing builders to design with more freedom by engineering less impact on the environment. This range of sealants is PAS 2060-verified, an internationally recognized certification for carbon-neutrality, and is aimed at reducing the negative environmental impact of buildings in our urban cities.
Although energy is also required to manufacture DOWSIL™ 's silicone products, we conserve up to 20 times more energy than needed to produce them. With a durability of over 50 years, DOWSIL™'s solutions significantly improve our common buildings' energy efficiency, making them the go-to solution for builders. This is the environmental handprint of silicone. From a footprint point of view, we can also offset the carbon needed to produce those silicones with DOWSIL™'s carbon-neutral silicone program. The offset is coming from decarbonization investments made by Dow at our plants, in the same way silicon metal and silicone polymers are produced, which are also the building blocks of our products. This is truly revolutionary and is only possible as Dow is a backward integrated producer for silicone. With this program, Dow is taking a leading position to support the industry in achieving upfront embodied carbon reduction and, as a last resort, to offset net zero across the building life cycle.
The building and construction industry has made consistent efforts in developing net zero carbon buildings to reduce carbon dioxide emissions. As such, DOWSIL™ has been constantly working with industry professionals to improve the aesthetics and durability of our solutions - which in turn, enhances the energy efficiency of buildings and safety of building occupants. Moving forward, DOWSIL™ will continue to lead the industry with innovative and sustainable solutions that place our customers first, while tapping on collaborative partnerships and our material science expertise. And this forms the “Blueprint” part of our program.
Follow our Facebook @dowsilAPAC for more updates on our next article, newly released products and know-hows on construction and repair work using our sealants.
Reference:https://corporate.dow.com/en-us/news/press-releases/introducing-carbon-neutral-silicones.html.
For over seven decades, Dow has been a global leader in silicone-based adhesives, investing in manufacturing and quality processes to generate innovative and reliable products for our customers. Today, there are more than 7,000 proven silicone products and services under the DOWSIL™ brand name. Whether it is the most demanding application or processing challenge, Dow’s broad portfolio of silicone adhesives encompasses a versatile selection of solutions tailored to meet your specific needs.
If you are new to sealants and adhesives and are looking for recommendations from our trusted selection of products, this article is for you. We picked out our top three best-selling sealants to help homeowners and professional contractors with different needs and applications.
Our top 3 best sellers
#1 DOWSIL™ Glass Sealant: Easily recognizable by its eye-catching red cartridge, the DOWSIL™ Glass Sealant has been around for decades. Its good adhesion to various construction substrates such as glass, aluminum, ceramic and non-porous materials make it a trusted solution for professional contractors, especially when it comes to gap seals and window renovations.
Product features:
- High performance and fast curing
- Forms waterproof sealing layer after cured
- Good weathering resistance
- Flexibility of cured sealant (prevents cracking)
Common applications:
- Glass glazing and sealing e.g., glass windows and doors
- Shopfront windows
- Internal fixtures
- Furniture
#2 DOWSIL™ F4 High Performance Kitchen and Bathroom Mold Resistant Sealant: When it comes to kitchen and bathroom renovation, you can’t do without DOWSIL™ F4 High Performance Kitchen and Bathroom Mold Resistant Sealant. Its resistance to the growth of mold and mildew is four times stronger than your typical sealants. Its ultra-low VOC* content has also earned it a 3-tick rating (Excellent) under the Singapore Green Building Product (SGBP) Certification.
This product ensures safe application and low maintenance for homeowners and DIYers looking for a sealant to do repair work, especially in wet areas.
*Low VOC refers to volatile organic compounds that are not harmful to the environment and humans. Low-VOC products contain a lower amount of VOC than conventional paints and adhesives, minimizing their impact on the ozone layer.
Product features:
- Long-lasting Mold Resistance
- Non-corrosive and non-yellowing
- Ultra-low VOC of 16g/L (an average can of paint that abides by the California regulations, where it is one of the most stringent, has a VOC content of 150g/L)
- Excellent adhesion to a broad range of building materials
Common applications:
- Shower and sanitary
- Kitchen countertops
- Gap seal
- Sink and wash basin
#3 DOWSIL™ 817 Mirror Adhesive: If your project or repair work involves mirrors, the DOWSIL™ 817 Mirror Adhesive is a must-have sealant for homeowners and professional contractors. It has an excellent adhesion to a range of surfaces, such as mirror backings, glasses (both coated & reflective), metals, plastics, polycarbonate, and PVC-U.
The DOWSIL™ 817 Mirror Adhesive also has a high initial power grab, providing excellent adhesion and bonding strength to the most common building materials, like your mirrors. Its non-corrosive nature helps avoid oxidation or staining of mirrors that usually occurs when you use an incompatible sealant on the backing of your mirrors, ruining the aesthetics and appearance of the mirror.
Product features:
- Non-corrosive
- Low odor and low VOC content
- Outstanding resistance to heat and humidity
- Resistant to ozone, ultraviolet radiation and temperature extremes
Common applications:
- Internal fixation of mirrors, coated glass or metal panels onto various substrates
- Bonding of glass and back plate in solar thermal plates
And these are our top three bestsellers of all time! We hope this introduction helped you in your search for an effective and easy-to-use sealant. Follow our Facebook @dowsilAPAC for more updates on our next article, as well as useful know-hows on how to navigate around renovation projects and repair works.
Dow Adhesive and Sealant Blog
Sealants are products that we associate with construction and repair works. Most of us already know by now that sealants are commonly used to:
- seal gaps between joined surfaces and;
- form a protective barrier to prevent water, air, heat, and other elements from penetrating the substrates or materials they have been applied onto.
But... there’s more to what sealants can do. So today, we are here to share three interesting uses of sealants that you are probably unaware of:
1. Prevent corrosion
Did you know that sealing exposed nails or screw heads with a silicone sealant can help to prevent corrosion? Silicone is resistant to ultraviolet rays (UV) and thanks to that, it acts as a protective layer against UV or sunlight. It also prevents contact with water, which can cause rust and corrosion of metal nails and screw heads.
Dow Adhesive and Sealant Blog
2. Repair failed sealants
What do you do when your sealant fails? Cutting out old building weatherseals can be costly and labor-intensive. A pre-formed silicone sheet, like the DOWSIL™ 123 Silicone Seal, will be an economical and high performing alternative to cutting out and re-caulking failed sealants.
The DOWSIL™ 123 Silicone Seal was designed as a fast and efficient way to repair failed weatherproof sealants without having to remove the old caulk. In situations where it is difficult to remove the old caulk, applying a pre-cured silicone strip such as DOWSIL™ 123 Silicone Seal on top of the old caulk is the more convenient solution. An example of this is joint for EIFS system.
The Exterior Insulation Finishing System (EIFS) is a type of cladding system used in buildings to provide exterior walls with an insulated finished surface and waterproofing in an integrated composite system. However, water intrusion often happens in EIFS cladding that leads to moisture accumulation in wall cavity, wood damage, mold growth, and infestation of pests like termites. And when sealants on EIFS-clad buildings fail, it typically results in leaks and interior damage.
Dow Adhesive and Sealant Blog
3. Art projects
Who would have thought that you could also use silicone sealants in art? Well, silicone sealants can be used to create molds and stamps to use with paint and clay, allowing you to duplicate unique designs easily for future use. Using sealants along with other adhesive products is also one way you can create multiple textures and dimensions in a collage.
When it comes to working with materials like wood, cement, plastic or clay, the adhesive nature of sealants helps to bind and seal these materials together for a seamless, waterproof hold. The high water and weather-resistance of silicone sealants also make them suitable for underwater projects e.g. making craft boats and rafts, as well as glass-on-glass art projects or outdoor pieces e.g. garden lamps, mosaic tiles and more.
Finally, using sealants as a finishing product will help to preserve your art projects and keep the elements from corroding or delicate materials from dissolving.
So how many of these sealant uses did you already know? Apart from home construction and repair works, sealants and other adhesive products can serve as handy, efficient solutions in your daily life. Reach out to us on our Facebook @dowsilAPAC if you have any questions so that we can recommend you DOWSIL™ solutions that match your needs. In the meantime, follow us on Facebook to be notified of our next blog article.
Dow Adhesive and Sealant Blog
At Dow, the Research and Development (R&D) team plays an important role in finding solutions that aim to change the world for the better. We speak with Guo Yi, our Senior Research and Development Leader who shares his day-to-day responsibilities and decade-long insights of his role.
Having been on this team for 15 years (and counting), Guo Yi is no stranger to the stereotypes people have of employees in the Technical Service and Development (TS&D) team and the R&D team.
“People think we are always serious and lack a sense of humor, especially since we can stay in the lab all day long without getting bored,” Guo Yi laughed. “What they don’t see are the setbacks we face at work. But at least we don’t give up on what we do.” Read on as Guo Yi debunks some common stereotypes.
What are some of your responsibilities in this role?
Dow always takes pride in its customer-centric approach. R&D responsibilities include collaborating with customers to design as well as develop products and solutions that meet their toughest challenges and needs.
Our top priority is to create valuable innovations - which mean better and more sustainable material. 100% compliant with regulations; easier to use; longer life cycle; and at an affordable price. When you have a great idea, it is also essential to protect it. R&D works closely with our legal department to manage our Intellectual Property and secure freedom to practice and patent new technologies.
As a people leader, I am responsible for nurturing and developing our team to stay relevant and competitive in the sealant industry. People development is also highly prioritized at Dow to allow growth within the organization.
That’s quite a diverse job scope you have there! It’s more than just “staying in the lab all day”. What are some challenges you face in this job?
We face new challenges every day and they can differ significantly from one another. From an issue detected in the compatibility of chemicals to the formulation's shelf life, our brains are “always running” to solve these problems. As a member of the R&D team, I think the unpredictability of these challenges trains us to be creative thinkers.
Wow, I think that changed the minds of those who were expecting a mundane and repetitive routine of a R&D scientist. What does your day-to-day routine look like then?
So, in our routine work, we spend most of our time discussing the issues we face. We also have to design and implement experiments to understand better the problems that have surfaced. That includes repeating experiments and validating the findings before summarizing, documenting, and presenting our technical approaches to resolve a particular problem. Finally, we also spend a sizable amount of time protecting our technology through patent applications.
I see. And what are some things that people may not know about your job?
Doing R&D is tough, and it really takes a team to make things happen. In fact, the TS&D, PD, PRD, ME, QA, marketing, and sales teams all work very closely together to drive the success of our projects here at Dow. Occasionally, we also get some creative ideas inspired by others. That “eureka!” moment really gives you an adrenaline rush, and you will feel a strong motivation to validate these ideas ASAP! For example, 6 months is far too short to sustain fungi-resistance performance. The new DOWSIL™ F4 High Performance Kitchen and Bathroom Mold Resistant Sealant is equipped with a prolonged fungi-resistance performance and this technical idea came up during one of our non-related dialogues with a raw material supplier.
PD: Product Development, PRD: Production ME: Manufacturing and Engineering QA: Quality Assurance
That’s truly some awesome collaborative work going on there! It’s great to hear that you take feedback from suppliers seriously. As a seasoned member on the R&D team, what were some of your most gratifying moments?
This job has been very interesting and rewarding especially when our collaborative ideas transform into innovative products for our customers. New product launches are always exciting and of course, not forgetting the times when we received positive feedback from our customers for these newly developed products! Also, it always comes as a big surprise when our team-developed products receive internal and external awards like the STAMP award, Business Intelligence Group Innovation Award, R&D 100 Awards (also referred to as “the Oscars of invention”!), TAA and more! It is a great honor, and these moments will always be memorable for us.
One of the most memorable moments for Dr Guo Yi and his team includes being awarded the BusinessIntelligence Group (BIG) Innovation Award this year.
Impressive! They are definitely significant milestones in your decade-long career. Would you like to share any interesting projects that your team recently developed?
That would probably be the development of our new F4 sealant. It all started with our customers requesting for a sealant with higher performance, and we listened. Our team of chemists gathered to study and design a new formulation - with a huge amount of lab tests involved! We challenged ourselves to design a formulation that has not just 2 or 3, but 4 times higher resistance against common moulds and would work best in tropical climates. It wasn’t easy but definitely exciting! I am very proud of our teammates and am happy to see that our customers are satisfied with the technical solution we provided.
Thank you for sharing all this insider news with us! To close off, we have one last question. For those who are aspiring to work in the R&D sector, what would you consider to be some qualifications required for this role?
Since R&D revolves largely around product formulation, this role requires you to be skilled in chemistry, material science and formulation science. In terms of soft skills, it’s a plus for any job if you possess good communication skills. But what’s more important for us is that you remain curious, open-minded, and resilient.
We hope this interview provides you with a better understanding of our work processes in developing the best quality products and solutions. Follow our Facebook page @dowsilAPAC to be notified when our next blog article goes up.
Dow Adhesive and Sealant Blog
Dow has always been committed to the fight against global climate change. With sustainability as the cornerstone of Dow’s business since its founding, we stand firm to the belief that whatever is good for society and the environment - is good for our business too.
In 2020, we announced new targets to reduce carbon emissions and eliminate plastic waste. In line with our purpose of delivering a sustainable future for the world, we aim to achieve this through our expertise in materials science and collaboration with our partners.
We are happy to announce the addition of two new sealant products under SGBP certification. (Check out our other SGBP certified products by searching for DOWSIL™ here!) SGBP, known as the Singapore Green Building Product certification scheme, evaluates a wide selection of green building materials for their noteworthy qualities.
The SGBP certification scheme is highly recognized under the Building and Construction Authority’s (BCA) Green Mark Scheme, allowing certified products to acquire additional points that count towards a project’s eventual sustainability rating. Therefore, the SGBP scheme is seen as a benchmark for green products in the building and construction industry.
These products are assessed based on their environmental properties and performance and will be awarded a rating between 1-tick (Good) and 4-ticks (Leader) as a testament to their environmental commitment.
#1 DOWSIL™ Green Multi Purpose Silicone Sealant
Here are the new additional to our SGBP certified DOWSIL™ sealant products:
SGBP Rating: ✓ ✓ Very Good
Known for its adhesion on various substrates, the DOWSIL™ Green Multi Purpose Silicone Sealant has a wide range of applications e.g., interior decoration, eco-friendly gap seal and partitions, multi-purpose and general assembly. Its high bonding strength to substrates is also indicative of its durability, reducing the need for sealant replacement. Available in white, grey and black, this sealant makes a convenient option for homeowners to match the aesthetics of their homes.
Green factor: With ultra-low volatile organic compounds (VOC) concentrations of 29g/L, the DOWSIL™ Green Multi Purpose Silicone Sealant minimizes negative health impacts - making it a safer option for homes with young children and pets. With little or no odour, it is also suitable for use in sanitary applications e.g., kitchen.
#2 DOWSIL™ F4 High Performance Kitchen and Bathroom Mould Resistant Sealant
Rating: ✓ ✓ ✓ Excellent
This sealant is characterized by its long-lasting mould resistance. It is four times more resistant to the growth of mould and mildew, making it suitable for sanitary applications e.g. bathrooms, kitchen tops, gap seal, sinks and wash basins. Besides having non-corrosive and non-yellowing properties, the DOWSIL™ F4 High Performance Kitchen and Bathroom Mould Resistant Sealant also has excellent adhesion to a broad range of building materials.
Green factor: The DOWSIL™ F4 High Performance Mould Resistant Sealant possesses an ultra-low VOC concentration of 16g/L, reducing the impact of VOC on your indoor air quality.
The sustainability journey is an ongoing one for all of us - and every action counts. As we continue to develop more sustainable products and implement projects that tackle challenges like carbon emissions and waste generation, we can only create breakthrough solutions for these pressing concerns through close collaboration with our customers and partners.
Join us in our fight against climate change to create a more sustainable world for everyone to live in by integrating green products into your lifestyle and production processes. Choose DOWSIL™ today.
A sealant:
Buying a sealant can be intimidating when you are faced with numerous technical terms on product labels. Fret not - here is an A to Z glossary of various sealant properties you need to know to help with your purchase.
First, let’s clarify what a sealant is for those who are new to our page.
- is a substance that is used to seal the gap and space between surfaces that are joined e.g., between the sink and the counter.
- forms a protective barrier to prevent water, air, heat and other elements from penetrating the substrates or materials it has been applied onto i.e., the gap or space becomes air and watertight.
There are various types of sealants and different properties you should consider, depending on the intended use. Here are some common product attributes or terms you may come across and find them difficult to make sense of:
- Adhesion - the bonding of the sealant to another material or substrate. Sealants of high adherence to substrates are less likely to form gaps in the long run, enhancing your home aesthetics
- Aesthetics - artistic taste or beauty
- Home aesthetics can be achieved with sealants of matching colors. DOWSIL™ Green Multiple Purpose Sealant comes in white, grey and black.
- Air sealing - sealing air leakage points throughout the house including holes through the basement ceiling made by electrical lines or leaky ducts.
- Curing - a process under which sealant is allowed to settle and dry. The temperature range and duration over which this occurs vary across sealants.
- Acetoxy cure silicones - release acetic acid which gives off a strong vinegar smell when curing.
- Neutral cure - releases alcohol or non-acidic substance when curing. This type of sealant has little or no odor, making them great candidates for indoor applications e.g. kitchen installations. It takes a longer time than acetoxy cure silicones to cure.
- Durability - service life of sealants before it requires replacing. Choosing the right sealant will significantly delay its replacement thereby helping you save money and the environment.
- Ease of application
- One part or no-mix application - sealant can be used as it is, without having to mix extra liquid. DOWSIL™ silicone sealants are a good choice for homemakers looking for easy-to-use sealants.
- Two-part sealant - product composed of a base and a curing agent or accelerator. They are stored in two separate containers and need to be uniformly mixed just prior to use.
- Flexibility - varying degrees of tear resistance.
- Silicone is known to be flexible over a wide range of temperatures. This allows silicone sealants to accommodate movement of materials or substrates (also known as “movement capability” to prevent cracking, splitting or tearing with age.
External factors
- Fungi - its spread is harmful to your health and will affect the structural materials of your home.
- Mildew - white or grey substance that is powdery; grows on the surface of things.
- Mold - can be black or green; and grows underneath the surface of anything that has gotten wet. This is indicative of a more serious infestation.
- Modulus - a term used to identify the degree of elasticity that sealants exhibit.
- A high modulus sealant refers to a stiffer sealant; a low modulus sealant refers to one that is stretchy.
- Room temperature vulcanizing (RTV) - tendency of sealant to vulcanize or cure at room temperature i.e. changes from a liquid or paste state to solid or flexible rubber.
- Silicone sealants allow curing to take place at room temperature.
- Sealant failure - can occur in various forms
- shrinkage of the sealant bead
- starts turning yellow
- starts hardening and becomes brittle
- starts coming off the applied surface
- sealant failures eventually lead to the growth of mold, cracking, or water seepage.
- Volatile Organic Compounds (VOC) - chemicals emitted as gases from certain solids or liquids. They are commonly found in products that build or maintain our homes e.g., paint, disinfectants, cleaning supplies, pesticides, air fresheners and aerosol sprays.
- The risk of health effects depends on the concentration of VOC in the air you breathe, as well as frequency and duration of exposure. Therefore, the lower the VOC content, the better.
- Weatherability - a sealant’s degree of resistance when exposed to heat, moisture, cold, solar radiation etc. Highly resistant, silicone sealants make a good option for basic repairs around the house.
- Thermal resistance – resistant to heat and high temperatures
- UV resistant - resistant to degradation by ultraviolet rays
- Water resistant - this is important for sealants that are likely to be exposed to moisture often e.g., windows and bathrooms.
With greater UV stability and weather resistance compared to other organic sealants DOWSIL™ silicone sealants ensure weatherproofing - especially in tropical climates where there is high exposure to sunlight or heavy rainfall.
Since these sealants last longer and need to be replaced less often, homeowners can reduce lifetime costs and contribute to sustainability.
We hope that the above has given you a better understanding of sealants and their various properties. Stay tuned to our next article and make sure to follow us on Facebook @dowsilAPAC for the latest updates and tips for your homes.
Dow Adhesive and Sealant Blog
You’ve got energy-efficient lighting and water-saving toilets installed in your new home. You even opted for earth-friendly alternatives such as 100% recycled countertops. But what about the substance that holds these materials together?
Adhesives and sealants are used in large quantities when it comes to construction, interior design or home improvement projects. They help to hold building materials or substrates together, cover surface imperfections, keep moisture out and prevent mould from appearing. Yet their impact on the environment is often overlooked. With increasing consumer demand and regulations for green initiatives, a new (and essential) value proposition has surfaced in the adhesive industry - sustainability.
“Green” and “sustainable” are more than just trending words these days as consumers become increasingly conscious of their purchase decisions.
Why silicone sealant?
Silicone is an extremely versatile material that is highly resistant to ozone, ultraviolet (UV) light, ageing, weather changes and extreme temperature fluctuations. Therefore, silicone sealant also possesses higher durability compared to other organic materials used in the adhesive industry. Using sealants with a longer working life reduces the need for maintenance and replacement. The increased material efficiency of silicone sealants thus lowers the total lifetime cost of maintaining a building, making them a very sustainable option.
When you are choosing sealants for your windows panels, gaps and partitions on your balcony or for outdoor use in general, it is important to bear in mind that exterior sealants must be able to withstand various weather conditions. Here is a basic checklist that we’ve put together for you to consider before purchasing a sealant for outdoor use:
- Weather resistance
- Water resistance i.e., keep moisture out especially when it rains
- UV and ozone resistance
- Non-corrosive and highly durable
With the myriad of products available in the market, it may not be feasible to go through every product label and its technical description to verify the sustainability and environmental impact of sealants. So here are some products we have picked out for you to buy better!
DOWSIL™ Green Multi-Purpose Sealant
This high-performance neutral cure sealant has good adhesion to a wide range of building materials. Apart from its low VOC content, it is also resistant to UV and has good weatherability - perfect for building a safe, sustainable, and green home.
Product Features:
- Ultra low VOC content
- Low odour
- Wide range of sealing
- Good bonding, durable
- UV resistant
Where to use: residential windows, sealing of joints, interior decoration, eco-friendly gap seal and partitions, multi-purpose, general assembly.
DOWSIL™ 791 Silicone Weatherproofing Sealant
DOWSIL™ 791 Silicone Weatherproofing Sealant is a one-part, medium-modulus, elastomeric sealant designed for general weathersealing. It is a silicone formulation that cures to a flexible and curable silicone rubber building joint seal.
Product Features:
- Good movement capability of up to +/-50%
- Excellent weather and water resistance
- Adhere to wide variety of construction materials
- Ease of application
Where to use: Idea for expansion, connection, perimeter, and other movement joints. Suitable for use on coated glass, galvanized steel, masonry, and other porous and nonporous substrates.
Now you are equipped with the tools to build a safe and sustainable home for your loved ones! Check out our other articles if you are new to sealants or looking for more sealant recommendations for your living and working spaces.
Previously, we looked at the use of sealants in offices in Our Seal of Approval for a Healthier Workplace. Today, we will talk about the application of sealants in another work setting - retail stores.
As consumers grow in environmental consciousness over the years, retailers are also driven to switch to sustainable building materials to reduce their environmental footprint. In fact, using sealants is one way to improve construction sustainability - by controlling energy usage, enabling a more durable bond, and providing a formulation that is compliant with stringent VOC regulations for better indoor air quality.
Sealants are usually used in retail stores in the following ways:
- Storefront windows e.g., glazing.
- Glass display boxes or furniture; and
- Shop decoration e.g., mirrors and wall panel
What are the things to look for in sealants for retail stores?
There are a few things you want to look out for when selecting sealants for retail store, so let’s take a quick look at these considerations right now:
- Good Adhesion: Glass is one of the most common materials used in stores today to achieve a sleek and minimalistic look, therefore it is important to pick a sealant that has excellent adhesion to glass. Acetic cure silicone sealants are great choice for their superior bond to glass and glazing surfaces. When cured, they provide a permanent watertight seal. These sealants offer a variety of colors such as clear and white which are popular choices for glass-to-glass joints.
- Mirror Substrate Compatibility: Not all adhesives are suitable for use on mirrors as the reflective coating on the mirror is a very sensitive material. Most adhesive will damage the silver coating. To prevent damage caused to the reflective coating, it is essential to use special mirror adhesive that are safe, tested and adapted for its purpose.
- Cure Time: Most sealants typically dry to the touch within 30 minutes, but they can take a few days to completely cure and be fully waterproof. Acetic cure silicone sealants typically have a faster cure time (within 24-hours, 11mins tack free) than most traditional sealants. The fast-drying formulation offers advantage of speeding up the entire installation process.
- Aesthetic: Did you know that our sealants also come in various colors? The wide range of color options enable customers to choose one that best matches their substrate to achieve an idea aesthetic. For retail store where glass is normally used, the white and clear are the most popular choices. With the recent increased used of steel for interior fixing, sealants are now available in shiny stainless steel color options.
We understand that you may be thrown off by the many options available on the market, so here are some sealants we have picked out for you!
Our top #3 picks for retailers
DOWSIL™ Glass Sealant is a fast-curing high performance, acetic cure silicone sealant. It adheres to glass, ceramic, fiberglass, aluminum, and many other non-porous building materials, making it an excellent choice for retail front stores.
Product features
- Fast curing and good adhesion to glass
- Non sag, paste consistency
- UV Stable and flexible from -40C to +150C
Where to use
- Shopfronts, windows and doors, internal fixture and fixing.
DOWSIL™ 817 Mirror Adhesive is a one-part silicone sealant, neutral cure and non-corrosive. This makes it suitable for internal fixation of mirrors, painted glass, or metal panels onto various substrates.
Product features
- High strength modulus (stable and will not deform as easily)
- Easy to use gun grade sealant
- Excellent unprimed adhesion on most glass, mirror coatings and metals
- Tested with international brand mirrors to be compatible with its backing
- Outstanding resistant to heat and humidity.
DOWSIL™ Neutral Silicone Sealant for Stainless Steel is a neutral room temperature cure silicone sealant, this product quickly cures to a flexible yet tough and durable seal. Not only is it aesthetically beautiful in color, it also has excellent adhesion to stainless steel, aluminum, glass and other building materials. It does not corrode metals and is weather resistant - perfect for use on storefronts.
Product features
- One part, easy to use & neutral cure
- Low modulus and high elasticity
- Low VOCs and resistant to UV temperature extremes
Where to use
- Window frames, handrails, glass, metal, aluminum, and decoration bars.
We hope this article has made sealants more accessible to the masses and informed shop owners of the various kinds of sealants available they can use to fix problems, such as water leakage. Since these are silicone sealants, the products are more UV resistant and durable - allowing them to retain their aesthetics without cracking over time. Keep an eye on this page as we share with you more sealant recommendations for different uses!
Our seal of approval for a healthier workplace
Whether you are working from home or in the office, working in a poorly maintained environment can negatively affect your productivity at work. Not only would it pose as a distraction, it also deprives you of your overall motivation.
As highlighted in our previous article Living in a Healthier Space with Sealants, the type of sealants used in your living environment can also adversely affect your health. Emitted as gases from manmade chemicals in the sealants, the concentration of volatile organic compounds (VOCs) can go up to 10 times higher indoors than outdoors. VOCs can also be found in other sources such as building materials and furnishings, as well as office equipment e.g., copiers, printers, correction fluids, carbonless copy paper and craft materials e.g. glue, adhesives, and permanent markets. It is therefore important to limit our exposure to VOCs as much as possible - starting from the choice of sealants used in the office.
Our Top 3 Picks:
DOWSIL™ F4 High Performance Mould Resistant
For its exceptional breathability and water repellency, this product is great for use in the pantry or surfaces that frequently come into contact with water.
Product features
- 4X higher resistance to growth of mould and mildew
- Extremely low VOCs (<2%), friendly product
- One part and easy to use - no mixing required
- Provides a durable and strong seal
Where to use
- Sinks, toilets, glass, marble, non-oil woods and painted surfaces
DOWSIL™ Stainless Steel
A neutral room temperature cure silicone sealant, this product quickly cures to a flexible yet tough and durable seal. Not only is it aesthetically beautiful, it also has good adhesion to stainless steel, aluminum, glass, and other building materials. It does not corrode metals.
Product features
- One part, easy to use & neutral cure
- Low modulus and high elasticity
- Low VOCs and resistant to UV temperature extremes
Where to use
- Window frames, handrails, glass, metal, aluminum and decoration bar
DOWSIL™ Green Multi-Purpose
Available in white, grey and black, this environmentally friendly sealant allows precise color match with the substrates (surfaces which you apply sealants onto) in
your office - allowing you to preserve the aesthetics of your office.
Product features
- Good adhesion to a wide range of building materials
- Low VOCs
- UV resistant, excellent weatherability
Where to use
- Interior and exterior sealing, cabinets, partitions, and gaps in balcony
Keep an eye on this page as we share our expertise in sealants and recommend products suited for different contexts, with the environment and your health in mind. See you in our next article!
Dow Adhesive and Sealant Blog
Silicone sealants are convenient and cost-effective solutions for DIYers when it comes to filling a narrow gap, keeping out moisture or finishing a joint at home. However, there are a few points to consider when homeowners purchase sealants for their living spaces.
Like all other man-made chemicals, there are potential health risks to look out for when using sealants indoors. Apart from their adhesiveness, ease of application, weather and water resistance and flexibility, the VOC content of sealants is definitely something DIYers should pay attention to on product labels.
What is VOC?
VOC stands for Volatile Organic Compounds and are chemicals emitted as gases from certain solids or liquids. They are commonly found in products that build or maintain our homes e.g., paint, disinfectants, cleaning supplies, pesticides, air fresheners and aerosol sprays. The concentration of VOC can go up to 10 times higher indoors than outdoors, hence choosing the right sealant for indoor use becomes particularly important. The lower the VOC content, the better. In some countries, there are regulations stipulating the VOC content. For example, in Hong Kong, the VOC content in sealants must be less than 4% of its weight.
What are some potential health risks?
Some health effects associated with VOC exposure include:
- Eyes, nose, and throat irritation
- Headache
- Nausea
- Damage to liver, kidney and central nervous system (with chronic exposure)
Cancer (with chronic exposure; applies to both animals and humans The risk of health effects depends on the concentration of VOC in the air you breathe, as well as frequency and duration of exposure.
Ways to reduce VOC exposure
Climate Control
- Increase ventilation or the amount of fresh air in your home
- Conduct renovation works at home when human traffic is low
- Maintain low or comfortable temperature and humidity because chemicals emit gases at higher conditions
Source Control
- Buy in quantities that you will use soon and follow label instructions
- Store unused chemicals where there is lower human traffic.
- Reduce reliance on pesticides. Instead, try natural remedies such as lavender and peppermint spray to repel insects
- Check product labels before purchasing and opt for sealants with lower VOC concentrations
DOWSIL™ Green Multi Purpose Silicone Sealant
Product Features
- Ultra low VOC (29g/L) and low odor
- Wide range of sealing
- Durable
- Comes in white, grey and black
Where to Use
- Multi-purpose, interior decoration, eco-friendly gap seal, partitions, general assembly
DOWSIL™ 817 High Modulus Neutral
DOWSIL™ 817 High Modulus Neutral
Product Features
- High strength modulus (stable and will not deform as easily)
- Non-corrosive, odourless and durable
- Weather resistant: heat and humidity
Where to Use
- Bonding of mirrors and decorative glass panels, metal sheets
DOWSIL™ Neutral Silicone Sealant for Stainless Steel
DOWSIL™ Neutral Silicone Sealant for Stainless Steel
Product Features
- Aesthetic
- Excellent adhesion
- Weather resistant
Where to Use
- Excellent gap fill for stainless steel, window frames and interior decoration
Stay tuned to our blog as we bring you more tips on silicone sealants and their different uses!
For homeowners who are new to sealants, we hope our 101 guide to what a sealant is has helped you understand why choosing the right sealant is important.
Sealant products typically have the same basic adhesive properties, though some are designed for specific applications. So how do you select silicone sealants that best suit your DIY projects and renovations e.g., in the kitchen or bathroom? And do all-purpose sealants provide the most cost-effective solution?
When it comes to kitchens and bathrooms, there are additional considerations to consider e.g., sealants to be used in the kitchen must be water and moisture resistant. So, in this instance, general purpose sealants may not be a one-size-fits-all solution for you.
Why all-purpose sealants may not always be the answer
More isn’t always better. When we are faced with a wide range of sealant products to choose from, we tend to opt for the general-purpose sealant. It is a good option because it works with most substrates and materials, including wood and glass. It is also durable and elastic, except that it usually does not contain fungicides.
Fungicides help to reduce the formation of mould, which is a plus point if you are planning to apply the sealant on surfaces that are frequently exposed to high moisture and humidity. Sealants can also prevent damage caused by water, see page in kitchens and bathrooms.
Regular checks for growth of mould and bacteria is important to avoid bursting your budget over hefty renovation and repair costs. In this article, we bring to attention some unexpected places where the mold hides in your homes. We will also introduce some sealants that are better suited for the kitchen and bathroom.
Where the mold hides
Where the Mould hides
Mold usually grows in areas where moisture collects. Here are some spots that often go undetected:
- Behind the fridge: condensation (source of moisture) occurs in the warm and dark space behind the fridge
- Under the fridge: a rarely noticed place where moisture and food spills may collect
- In your food blenders: excess moisture from dishwashing may create a thriving environment for mould growth
- Under the sink: a warm, moist, and dark environment ticks all the boxes for mould growth to occur and clearing these contaminants leads to more costly repairs or replacements of furniture
- Window seals: condensation from the rain provides moisture, while dirt and dust supply “food” for mould, posing a potential health hazard
- Seals of electronic appliances: e.g., washing machine where a lot of moisture is retained
- Toothbrush holders: water that drips from toothbrush into the container is a source of moisture for mould
Here are some products we recommend:
DOWSIL 798 Cold and Clean Room Sealant
- Product features:
- Bacteriostatic: capable of inhibiting growth of bacteria
- Chlorine resistant
- Safe for intermittent food contact
- Good adhesion to most surfaces
- Low modulus of elasticity (ISO 11600): useful for large temperature fluctuations and lightweight materials that move rapidly
- Where to use: interior or exterior sealing, food handling area. refrigerators unit, clean Room
DOWSIL F4 High Performance Mould Resistant Sealant
- Product features:
- Long lasting mould resistance: 4x higher
- Resistance to the growth of mould and mildew
- Neutral cure: visually or completely odourless
- Non-corrosive and non-yellowing
- Excellent adhesion to a broad range of materials
- Where to use: shower and sanitary, kitchen countertops with backsplash, sinks, wash basins, and gap seals
Why is choosing the right sealant important?
Before you dismiss it as "just a sealant", let us share the importance of choosing a good sealant for your homes.
It is important to understand the quality of the sealant that you are going to select for your intended use. After all the planning (and cost) that has gone into renovating your home or office, you certainly wouldn't want to have sealant failures that may ruin your home’s aesthetics.
Moreover, choosing a good sealant only forms a very small fraction of your total renovation cost so it is important that you and your contractors don't compromise quality to save those few dollars.
Sealant failures - what's that?
As with any other commodity, sealants too have a service life. Here are some signs to indicate that your sealant is failing:
- shrinkage of the sealant bead
- starts turning yellow
- starts hardening and becomes brittle
- starts coming off the applied surface
Sealant failures eventually lead to the growth of mold, cracking, or water seepage. While sealant failures happen at most, if not all, applications, choosing the right sealant will significantly delay its onset helping you save money and the environment.
So... What's a sealant?
So... What's a Sealant?
A sealant:
- is a substance that is used to seal gaps and spaces between surfaces that are joined e.g. between the sink and the counter.
- forms a protective barrier to prevent water, air, heat, and other elements from penetrating the substrates or materials they have been applied onto i.e. the gap or space becomes air and watertight.
Sealants are not to be confused with adhesives, which are used to bind surfaces together and do not serve the same function of sealing gaps between materials. Sealants also require curing i.e. letting it dry - the temperature range and duration over which this occurs also vary.
When we delve into the different types of sealants, you will realize that there is, in fact, a wide array of options for different uses. In these 101 guides to sealants, we will focus on the highly versatile silicone sealant.
Sealant = Silicone?
As one of the most popular sealant options, the words "silicone" and "sealant" are used interchangeably today. And its popularity is not unfounded. Silicone is known to be flexible over a wide range of temperatures. This allows sealants to accommodate movement of materials or substrates to prevent cracking, splitting or tearing with age. It is also resistant to other chemicals, moisture, and weathering - making it a suitable option for basic repairs around the house.
DOWSIL™ Silicone Sealants are ideal for home use because they are room temperature vulcanizing (RTV), allowing curing to take place at room temperature. They are also fuss-free with a no-mix application and provide high adherence to a variety of substances.
This makes them less likely to form gaps in the long run, enhancing your home aesthetics. With greater UV stability and higher temperature and weather resistance compared to other organic sealants, the use of DOWSIL™ Silicone Sealants ensure weatherproofing - especially in tropical climates where there is high exposure to sunlight or heavy rainfall. Since these sealants last longer and need to be replaced less often, homeowners can reduce lifetime costs and contribute to sustainability.
The ABCs of choosing a sealant
Here are some simple things to consider when you choose a sealant:
- What is your intended usage? e.g., resealing the windows
- Are there any accompanying concerns? e.g., food safety, sanitation
- Is the sealant compatible to be used with the substrate? (To ensure good adhesion and performance.)
It can get a little overwhelming with all the different products out there in the market -- especially with all the technical jargons used in the packaging. But we hope this guide has provided you an introduction to some basic knowledge on sealants.
Stay tuned to our next article as we introduce water-resistant sealants that are best suited for use in your kitchen and bathrooms!
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