Dampproofing on below-grade masonry foundation walls shall extend from the top of the footing to what upper limit?

Dampproofing on below-grade masonry foundation walls shall extend from the top of the footing to what upper limit?

• A. The finished grade
• B. The top of the footing
• C. One foot above grade
• D. The top of the wall

Answer: (A)

Dampproofing is a moisture barrier applied to the exterior of below‑grade masonry foundation walls to stop dampness from the soil from seeping into the wall. It must run from the top of the footing up to the finished grade. This guarantees a continuous barrier along the portion of the wall that remains in contact with soil and where moisture migration is a concern, even as backfill settles or landscaping changes. Stopping at the top of the footing would leave the section that will be backfilled up to the grade unprotected, and extending above the finished grade isn’t necessary and could be damaged by surface activities.

Dampproofing is a moisture barrier applied to the exterior of below‑grade masonry foundation walls to stop dampness from the soil from seeping into the wall. It must run from the top of the footing up to the finished grade. This guarantees a continuous barrier along the portion of the wall that remains in contact with soil and where moisture migration is a concern, even as backfill settles or landscaping changes. Stopping at the top of the footing would leave the section that will be backfilled up to the grade unprotected, and extending above the finished grade isn’t necessary and could be damaged by surface activities.