Basement Waterproofing in DC, Maryland & Virginia
Keep your basement dry and protected. Cornerstone Builders & Design provides interior and exterior waterproofing solutions across the DMV.
What We Do
Interior French drains, sump pump installation, exterior waterproofing membranes, crack injection, vapor barriers, and dehumidifier systems.
Common Solutions
Perimeter drain systems, wall sealants, window well drainage, foundation crack repair, and grading corrections to redirect water away from your home.
What to Expect
Free basement inspection and moisture assessment. Most interior systems are installed in 2–4 days. We offer transferable warranties on all waterproofing work.
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Licensed & Insured • Lifetime Warranty