This means you also get to save lots of money in fees and costs of repair if the water was to get through. I made liberal use of the butyl rubber caulk since I had many areas where I poorly installed the foundation membrane. This sheet of plastic provides a barrier between the foundation and the surrounding soil. The dampness can be controlled by installing a waterproof plastic membrane. Most Common Concrete Waterproofing Solutions. I had leftover DrySeal, so I generously poured it on the foundation footing. Instead of dealing with the indignity of moving the dirt twice, I could have excavated and dropped the dirt directly into the dumpster. Exterior Waterproofing Is Going to Require Hard Work Both exterior and interior waterproofing are possible to be done sufficiently as a DIY project, but it is going to take a little bit of initial research and preparation to have the right products and tools on hand when you’re ready to start. The second product I applied to my foundation wall was DrySeal Premium Rubberized Foundation Coating. Damp proofing, waterproofing, damp treatment and sustainable preservation of building materials is now possible for every do-it-yourselfer. The second reason was that I was unsure if there was adequate slope from the foundation footer to the street. Soil absorbs water and then expands, which applies hydrostatic pressure to a foundation wall. Lawn And Garden. The bottom layer is landscaping fabric meant for hardscaping, while the top layer is 30mil root barrier designed to stop bamboo roots from spreading. With one hand I applied a bead of concrete repair via the caulk gun, while with the other (nitrile gloved) hand I worked the material into the crack. To secure the sheets of insulation to the foundation I again used Tapcon fasteners, which meant drilling even more holes into the block wall and my dimpled waterproofing membrane. If you see wet spots on basement floors and walls, you might have a condensation problem. The inspiration for my water proofing adventure came from the stains on the interior of our sunroom, which I painted white after we moved in. To do this I wrapped the insulation in a layer of aluminum window screen, which I secured with aluminum roofing nails. Obviously I’m not an expert, so be skeptical of any advice you read here. The dampproofing is only as good as its application, as the above photo can attest. A little further down the page you’ll see that I poured self-leveling concrete on the footing to make it less rocky and more smooth to encourage the water to drain away. The only alternative is to score the foam with a utility knife and then snap it apart, but that becomes difficult with a large sheet. For me that meant several bushes, a small area of gravel, and an expansive vine (or maybe it’s just a grow-y bush, hard to say). This was the last step to fully dampproof the foundation. 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