Is $30,000 to waterproof a 1920s clay block foundation a fair price?
Project Details
I am in NE Ohio and have a 1920s clay block foundation. The previous owners painted/coated the walls, but the paint started chipping badly from moisture. My basement isn't wet, but it needs a dehumidifier in certain seasons to prevent musty smells. I am looking for ways to insulate the walls without harming the blocks, considering options like foam boards (with or without an air gap) or framing walls with fiberglass batting. I just want a livable space at a reasonable cost.
Quote Details
This quote from a waterproofing company is for waterproofing my clay block foundation. The company indicated that it would not completely waterproof the foundation due to the type of foundation not being able to be pinned to. The work would also involve tearing up the existing vinyl floor, which I would then have to pay to replace. - Scope: Waterproofing of a clay block foundation - Limitation: Not able to completely waterproof due to foundation type (cannot be pinned to) - Impact: Requires tearing up existing vinyl floor - Additional Cost: Homeowner responsible for replacing torn-up vinyl floor
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More Details
Category
Insulation
Price
$30,000
Quote Date
February 2, 2026
Location
Ohio
Year Built
1920
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