Basement Leak & Moisture Inspection Checklist

Cracks under a deck can let in water, pests, or even compromise the structural integrity of your home if left untreated. The best repair method depends on whether the crack is in concrete, masonry, stucco, or wood.

How we do exterior crack repair under the deck

Steps

Inspect the Crack
Clean the area with a wire brush. Inject with concrete crack filler.
epoxy injection or professional sealing
Clean out loose debris and dust.
Apply a waterproof sealant over the repair.

Walls & Floors (Inside Basement)

Look for cracks in walls or floor.
Check for stains, peeling paint, or bubbling drywall.
Note any musty or damp smells.
Look for white chalky deposits (efflorescence) on concrete.
Do a plastic sheet test (check condensation vs seepage).
After heavy rain, check floor/wall joint for seepage.

Foundation & Exterior (Outside House)

Inspect gutters & downspouts (water should flow away from house).
Confirm grading slopes away from foundation.
Look for cracks in foundation walls.
Check basement window wells for water pooling.

Humidity & Air Quality

Use a hygrometer to measure humidity (aim for 40–50%).
Check for musty odor (possible hidden mold).
Ensure dryer vents to outside (not into basement).

DryMax Waterproofing Inc

DryMax Waterproofing is known for its comprehensive waterproofing solutions, including basement waterproofing, foundation crack repair, and sump pump installation. They have a strong presence in the Greater Toronto Area, including Mississauga.

DryMax Waterproofing Inc.

We Help with: Flooded Basement, Cracked Foundation Walls, Sump Pump Issues, Clogged Drain Clean Up and more