How to seal a rock wall from leaking water

Charlene Marks
by Charlene Marks
  3 answers
  • Cindy Hagemann Cindy Hagemann on Apr 07, 2018

    Try concrete sealer - you paint it on thin.

  • Linda Sikut Linda Sikut on Apr 07, 2018

    Hi Charlene,

    You don't mention if it's a decorative type wall or your basement wall. If it's a basement wall, the problem with just sealing it inside could mean that the water will just find another way to get in. There are many sealers available at places like Lowes, Home Depot & Walmart (and I'm sure similar places) However, to be effective you really need to seal both sides of the wall and perhaps fill in cracks with a masonry product. This may be more than you're able to DIY if it means digging out the area around your home. If it were me, I'd check with a local waterproofing company first. Have several companies come to your home to look at the problem and take notes about exactly what they are saying. Get estimates from at least 3 companies. Once you know the extent of the real problem, then make a decision to DIY or hire a professional. Wishing you the best.

  • Jewellmartin Jewellmartin on Apr 07, 2018

    Water leaking through a stone wall is sometimes called a waterfall—but that’s not exactly what you want in your yard. You actually can divert the water, but it has to have somewhere to go. So plan drainage before you seal the wall. Rock walls are often put together with cement, which can crumble and allow seepage over time. Outdoors, you may choose to use a foam (plumber’s) sealer, and paint it. Indoors, you can use a silicone sealer which you may paint or not. But unless you pull the wall down, put in a waterproof barrier, and rebuild with cement, with caulk, the problem may continue. Water will find the lowest level with the force of gravity. Best wishes ☺️