Basements

Get advice on keeping your basement dry, maintained, and mold-free, plus ideas for renovating your space.

Overview
How To & DIY
Ideas & Inspiration
Video

These This Old House videos showcase all of our basement projects, how-tos, and designs.

S23 E7: Richard Trethewey installs a sump pump
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How to Install a Sump Pump

A homeowner’s basement had water issues. This Old House plumbing and heating expert Richard Trethewey helped solve the problem, installing a sump pump in the corner to keep the basement dry.

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2037_basements
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Fixing a Damp Basement: Solutions for a Dry Home

Plumbing and heating expert Richard Trethewey teaches Kevin O’Connor what he needs to know about handling wet basements.

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foundation
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Why Are These Foundations Crumbling?

Ask This Old House mason Mark McCullough investigates a strange issue happening to foundations in the Northeast

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a basement with placed identified where mold can appear

How To Keep Your Basement Mold-Free

Start here if you suspect mold in your basement or want to prevent it in a newly built home.

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