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Overview
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In this video, This Old House general contractor Tom Silva explains how to seal cracks in your foundation and other basement flooding problems.
Steps:
1. Fill cracks and holes in concrete walls and floors with hydraulic cement.
2. Apply a coat of waterproof masonry cement to inside surface of basement walls.
3. Attach flexible extensions to ends of downspouts to carry water away from foundation.
4. Dig trench directly below downspout for 4-inch-diameter PVC pipe.
5. Connect downspout to PVC pipe.
6. Install a drywell at opposite end of pipe to catch and disperse rainwater. -
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2 hours to 2 days, depending on severity of the problem
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Tools
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Shopping List
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Difficulty: Moderate
Can range from somewhat easy or difficult, depending on the repair
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Tools List
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Paintbrush or paint roller,
used to apply waterproof paint -
Putty knife,
used to mix and apply hydraulic cement -
Shovel,
used to dig trench for PVC pipe and hole for drywell
Shopping List
1. Waterproof masonry paint
used to seal interior of foundation walls
2. Hydraulic cement
used to seal cracks and holes
3. Bucket
used to mix hydraulic cement 4. Flexible down spout extender
5. 4-inch-diameter PVC pipe
used to connect downspout to drywell
6. Drywell
used to seal interior of foundation walls
2. Hydraulic cement
used to seal cracks and holes
3. Bucket
used to mix hydraulic cement 4. Flexible down spout extender
5. 4-inch-diameter PVC pipe
used to connect downspout to drywell
6. Drywell
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