How To Fix A Leaky Basement?

Can you seal a basement from the inside?

DO apply a masonry waterproofing product to bare interior basement walls.

If your foil test showed that water is soaking through your basement walls and leaving them wet, seal the interior of the walls with a high-quality waterproof paint, such as DRYLOK White Extreme Waterproofer (available from Home Depot).

How do you fix a leaking basement?

Here are eight strategies to keep water out of your basement.

  • Add Gutter Extensions.
  • Plug Gaps.
  • Restore the Crown.
  • Reshape the Landscape.
  • Repair Footing Drains.
  • Install a Curtain Drain.
  • Pump the Water.
  • Waterproof the Walls.

How much does it cost to fix a leaky basement?

The average homeowner spends around $4,313 to seal a basement or foundation, with minor repairs costing as little as $600. More comprehensive issues that include fixing cracks in the foundation or adding drains & gutters can cost upwards of $10,000.

How do you fix a foundation leak?



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Our Foundation was Leaking! Here’s How We Solved It! – YouTube


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Does Flex Seal work on basement walls?

Flex Shot and Flex Seal Liquid are great options for attacking a basement wall leak. Many other products in the Flex Seal Family are waterproof, so consider using Flex Glue, Flex Tape or Flex Seal Spray for other areas that may be experiencing water intrusion, or other repairs around the basement.

Can you waterproof basement from the inside?

Tape a 1-foot-square piece of aluminum foil to the inside of your basement walls, and leave it in place for 24 hours. You can waterproof just your interior walls, which may solve the problem. Or you can waterproof your exterior walls, which is a better bet — but more costly.