Basements, explained.
Plain-English, illustrated guides to basement water, foundations, crawl spaces, sump pumps and indoor air: how each part works, what usually goes wrong, and when it is time to call a professional.

Start with what you need help with
Pick a topic. Every guide starts with the answer and then explains why.
Start here
The guides we start with for the questions homeowners ask most about their basements and crawl spaces.
Wet Basement: Why Water Gets In and How to Stop It
Four ways water gets into a basement, how to tell leakage from condensation, why grading and gutters come first and when a wet basement…
Latest guides
New illustrated guides every weekday.
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Wet Basement: Why Water Gets In and How to Stop It
Four ways water gets into a basement, how to tell leakage from condensation, why grading and gutters come first and when a wet basement is a…