Best waterproof membrane for basement walls?
4 years ago
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- 4 years ago
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Walkout basement exterior waterproofing
Comments (8)IMO no. It may work for awhile, but rubberized asphalt is not going to span any significant cracks that might form (esp with block). French drain and proper drainage are of course critical, but if you're going to finish and use a basement IMO it's worth spending the extra money on proper waterproofing including either a more advanced membrane externally or a dimpled membrane system. As well, external insulation will keep basement walls warmer and less likely to condense moist air and less likely to be damp/mildewy. We built our basement 10 years ago using these principles and have had a completely dry basement that is just as nice as the rest of our home (our rear is walk-out on grade as well) It's a LOT more expensive to go back and try and fix problems later, should they occur. and if you are going to finish the space, it gets even more expensive should problems arise....See MoreWaterproofing hole in basement wall
Comments (1)You need to fill the hole with hydraulic cement. It is a type of cement that expands as it dries. It is used in situations like you have, a hole in a concrete wall to plug. It will even set up underwater. It comes in little tubs at your local big box store or hardware store. follow the directions closely when mixing and filling the hole as it dries very quickly. It has a very short working time. Before you mix up the cement,line up a stick you can use to push it in the hole as far as you can. Stuff it as far as you can and work quickly with it. Also wear gloves when using this product as it can burn your skin....See MoreBest shower/tub waterproof material, membrane etc.?
Comments (4)Here is what our contractor did. He insulated the framed walls first, and of course, a plummer did what he had to do prior to this step. Once the mud dried, they coated it all with mortar, then came the quickset and tile. Here is what he used for the shower pan. Under that is a lot of mud, sloped for good drainage. There is a drain hidden under all that mud! The shower is almost finished, and it works great! Used it yesterday. Drains perfectly!...See MoreBest way to waterproof shower with one exterior wall?
Comments (2)Thank you so much for your response. I actually haven't discussed this with my GC nor the sub who will be doing the work yet, I was just trying to get some education here so I would at least know the basics when I do discuss it with them. Here are some photos of the space: The wall with insulation is obviously the exterior wall. The 2x4s that are visible between the insulation are not the actual studs of the exterior wall, though - presumably the previous owners placed them there during their renovation. I don't know if my contractor plans to leave them as is or remove them so that the new shower can be constructed directly on the exterior studs, but presumably there will be insulation there either way. When you say "FACED" insulation, you mean the paper-backed sort that is there, correct? I have seen instructions online to slit the paper backing on any insulation that will be next to a moisture barrier, presumably to give moisture some escape routes. I assume that when you say you can't have faced insulation plus a vapor or moisture barrier, you mean faced insulation with fully-intact paper backing, in a large sheet that would leave moisture nowhere to go, correct? Mine is obviously NOT in intact condition, so unless we decide to put new in, I don't think we'd have to worry about moisture getting caught between paper and barrier. I assume that since it is in strips between the studs, just those breaks in the paper would be enough for moisture to escape, but perhaps I'm wrong about that? Is there a better type of insulation to use behind a moisture barrier, or a better kind of barrier to use with paper backed insulation? ETA: This is a second floor bathroom, and we have stucco siding....See More- 4 years agolast modified: 4 years ago
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