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Dow Protection Board III
Helps protect waterproofing membrane from damage during backfill |
CAD Details for Dow Protection Board III
Dow Protection Board III Product Information sheet (52KB PDF)
Dow Protection Board III is an extruded polystyrene foam insulation board with plastic film on one side. Fanfolded 50-foot lengths make it easy to install and work with on the jobsite. Recommended for waterproofing protection on the exterior of perimeter concrete and masonry walls.
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| Nominal Board Thickness |
R-Value |
Board Size |
Edge Treatment |
Min Compressive Strength† † |
| .25" |
1 |
48" x 600" |
Square Edge |
8 psi |
Building Code Compliance
Meets IBC/IRC requirements for foam plastic insulation. See ICBO-ES ER 2257, BOCA-ES RR 21-02, NES NER 699, Und. Lab. Inc.™ Classified, see Classification Certificate U589.
†R means resistance to heat flow. The higher the R-value, the greater the insulating power. R-values are expressed in ft2•h•°F/Btu.
††Vertical compressive strength is measured at 10% deformation (5% for STYROFOAM PLAZAMATE insulation and for STYROFOAM HIGHLOAD 40, 60 and 100 insulation products) or at yield, whichever occurs first. Since STYROFOAM extruded polystyrene and Dow polyisocyanurate insulation products are visco-elastic materials, adequate design safety factors should be used to prevent long-term creep. For static loads, 3-1 is suggested. For dynamic loads, 5-1 is suggested.
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