Your wet basement is sucking you dry

December 15, 2015


But before we go sloshing around knee-deep Looking over roof edgedankness we begin our wet basement banishment in an unexpected place:

The roof.

Because lousy grading is hard to see when you’re right on top of it, but there’s no hiding when you look down from above.

poor surface drainage is the major cause of basement water problems.

Grim grading, gutters or downspouts mean every drop of rain ends up near the foundation.

And if roof climbing isn’t your thing, you can still walk around the house to ensure the ground slopes away from the walls.

Where it’s flat or sloping toward the house is a potential moisture source.

Stains on gutters and downspouts tell you they’re blocked, leaking, or overflowing.

And weak downspout connections at the storm drain will cause damage and erosion in that area.

Efflorescence and concrete walls

The detective work inside the home is a little trickier but not impossible.

You should see no moisture at the basement windows and no rusty nails or rot at the base of basement walls.

There should be no flaking of plaster walls or powder on the surface of masonry walls.

Efflorescence on walls

Lifting tiles, stained floors, and buckled walls are also telltale signs of dampness. A musty smell is a sure sign of trouble.

Take a close look in a finished basement because problems hide behind walls or under carpets.

Especially where furnace pipe enters the chimney and service conduit enters the main panel.

Home inspectors use a moisture meter to measure dampness inside these areas.

A bulge in seam compound or lifting drywall tape is also a warning sign.

Efflorescence or subflorescence on the foundation should raise eyebrows.

And if anything is wet you’ve got a surefire problem.

What are the solutions?

Fix the grading, gutter, and downspouts, and most problems will disappear.

Installing weeping tiles around the foundation will draw water away from the walls.  Most homes built before 1950 don’t have weeping tiles and even newer systems can become clogged or damaged.

Improved basement ventilation and Dehumidifier in wet basementraising the temperature in the summer will reduce condensation.

Insulating cold water pipes, basement walls and ventilating a crawlspace is also helpful.

And place a dehumidifier inside basements and cellars to vent any moist air outside.

If your basement doesn’t always feel comfortable, you need to take action.

Leave a Reply

Your email address will not be published. Required fields are marked *

Steve Rodriguez

Steve is a Certified Master Inspector® and owner of Bulldog Professional Inspection Services in Kansas City, Missouri. He is the author of The Ultimate Consumer Guide To Home Inspections and has been a professional home inspector since 2003.

Newsletter Sign-Up

Twitter Feed


Recent Posts