Crack repair – exterior patching

Interior · Wet Basements and Crawlspaces · printed page 372 (PDF page 373)

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Exterior Patching

Text in the illustration

Crack repair – exterior patching asphalt mopped onto walls as dampproofing to retard the diffusion of water vapor drainage tile basement slab foundation wall gravel fill next to wall to facilitate drainage waterproof bituminous membrane covering wall this method may be used when there are many small cracks, when it is difficult to identify the specific source of leakage, and when there is difficult to correct poor grading (such as a hill next to the house) it may also be used to seal individual cracks rather than as a full wall treatment
asphalt mopped onto walls as dampproofing to retard the diffusion of water vapor
foundation wall
waterproof bituminous membrane covering wall
gravel fill next to wall to facilitate drainage
drainage tile
basement slab
this method may be used when there are many small cracks, when it is difficult to identify the specific source of leakage, and when there is difficult to correct poor grading (such as a hill next to the house)
it may also be used to seal individual cracks rather than as a full wall treatment

Generated explanation

The illustration shows exterior treatment of a cracked foundation wall beside a basement slab. Cutaway layers identify asphalt dampproofing to retard water-vapor diffusion and a waterproof bituminous membrane covering the wall. Gravel fill alongside the wall facilitates drainage to drainage tile at the base. The annotations describe this treatment as an option for numerous small cracks, uncertain leakage sources, or difficult-to-correct grading, and note that it can also be applied to individual cracks.

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