How do I seal my basement?

  6 answers
  • Lynda Lynda on Jul 27, 2019

    foam on spray

  • William William on Jul 27, 2019

    What do you mean seal? What is the problem?

  • Kelli L. Milligan Kelli L. Milligan on Jul 28, 2019

    Is it leaking? You need to contact a co that does water proofing. Need to do from out side. If already inside could damage your foundation.

  • Sharon Sharon on Jul 28, 2019

    Is it just damp? you can do DIY solutions like paint the interior foundation walls with DryLok paint, you will have to fill in any cracks with a hydrolic cement/caulk like Quikcrete. If the moisture is coming from the floor you can get a concrete sealer from any home store.

    If your gutters aren't in good repair this can cause problems too, I just added extensions to the 2 downspouts where the water pooled. You can buy these at the hardware store, or you can dig them into the ground as we do here in the PNW due to heavy rain.

    If there is actual standing water then you may need an exterior French Drain around your foundation outside, and also coating the foundation with a rubberized product This guy has lots of videos showing solutions....

  • It depends on what the problem is and what your floor/walls are. A masonry or waterproofing paint could help.