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Foundation Waterproofing
Foundation Waterproofing
Inspection Checklist
Walk through every zone of a foundation inspection, document findings, and print a completed report for the customer. No signup required — runs in your browser.
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Section 1 — Exterior Site Conditions
Grading slopes away from foundation (6 inches per 10 feet minimum)
Downspout extensions discharge at least 6 feet from foundation
Window wells clear of debris and draining properly
Soil not in contact with wood framing or siding
No pooling or standing water visible around perimeter
Section 2 — Foundation Wall Exterior
No visible cracks wider than 1/4 inch on exterior wall
No efflorescence (white mineral deposits) on exterior masonry
Prior waterproofing coating intact with no peeling or gaps
Drainage board or dimple mat present where applicable
Parging coat in good condition (if present)
Section 3 — Interior Wall Inspection
No wet staining or water marks on interior foundation walls
No efflorescence on interior masonry
Crack mapping complete (note horizontal, vertical, or diagonal orientation)
No bowing or horizontal deflection of foundation walls
No visible mold or mildew growth on walls or floor
Section 4 — Drainage and Sump System
Interior drain tile system present and clear (if applicable)
Sump pit depth adequate (18 inches minimum recommended)
Sump pump operational and discharging to proper location
Float switch activating pump correctly
Battery backup or secondary sump pump in place
No sediment or debris blocking sump intake
Section 5 — Windows and Penetrations
Window wells drain freely with no standing water
All utility penetrations through foundation wall sealed
Egress window condition acceptable
Window frames in good condition with no rot or seal failure
Section 6 — Recommendations
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Foundation waterproofing inspection FAQ
Common questions about foundation waterproofing inspections and what to look for.
What does a foundation waterproofing inspection include?
A foundation waterproofing inspection covers exterior site conditions including grading and downspout placement, the condition of the foundation walls inside and outside, any visible cracks and their orientation, the drainage system and sump pump operation, window wells and utility penetrations, and a severity assessment with recommended next steps.
What causes a wet basement?
The most common causes of a wet basement are improper grading that slopes toward the foundation, clogged or short downspout extensions that deposit water too close to the wall, hydrostatic pressure from a high water table, and cracks in the foundation wall or floor slab. Interior condensation can also appear as wetness but is caused by humidity rather than water intrusion.
What is the difference between interior and exterior waterproofing?
Exterior waterproofing involves excavating around the foundation, applying a waterproof membrane to the outside of the wall, and installing drainage board and a footing drain to redirect water before it reaches the wall. Interior waterproofing installs a drain tile system along the interior footing and routes water to a sump pump. Exterior systems stop water at the source; interior systems manage water that has already entered.
How much does foundation waterproofing cost?
Interior drain tile systems typically cost $5,000 to $15,000 depending on basement perimeter length and local labor rates. Exterior excavation and membrane systems run $15,000 to $30,000 or more due to the excavation cost. Crack injection repairs for isolated cracks cost $400 to $1,000 per crack. A sump pump installation alone averages $800 to $1,500 including the pit, pump, and discharge line.
Can Claver schedule foundation inspections and generate repair proposals?
Yes. Claver lets waterproofing contractors schedule inspections, attach photo documentation to each job record, and generate repair proposals with line-item pricing. Customers can review and e-sign proposals from any device.