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Damp proofing
provides a barrier between ground soil around below grade foundation walls.
In the "old days"
builders used coal or petrolium based tar products to seal foundation walls. These
products were difficult to coat the walls with and were not very environmentally
friendly. The tar was applied well below the top of the wall so the black
tar surface was hidden below grade level. This meant that a portion of the
wall was in contact with soil and was unprotected.
Today, Cast In
Place uses Deco 20 which is an acrylic resin based sealant that provides an environmentally
friendly seal all the way to the top of the foundation wall. We use an airless
high pressure sprayer to coat the walls in one continuous seamless coating.
Deco 20 dries to a odorless gray within 6 to 8 hours. Deco 20 meets or exceeds
the following ASTM Specifications:
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ASTM D 2939 - 1998 Section 15 |
Method A - Resistance to water. Rating number 1
- No softening- no loss of adhesion or reemulsification. |
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ASTM D 2939 - 1998 Section 16 |
Flexibility - Rating number 1 - no cracks, hairline or
otherwise, no loss of adhesion. |
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ASTM D 6489 - 1998 |
Water Absorbtion. |
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ASTM C 836 - 2000 |
Film Thickness on vertical surface. |
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ASTM D 2665 - 1999 |
Color Fastness of Surface Coating - UV resistance. |
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ASTM D 3273-94 |
Resistance to mold growth of Surface Coating. |
Damp proofing
in no way eliminates the need for a properly installed foundation wall drainage
system.
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