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I am repairing an outdoor area of my house that involves tiles and wonderboard over a wood structure. The ‘best solution’ would be to completely rip up the whole area and re-do it, correctly laying down a waterproof membrane of some sort, etc.
However, only a small part is damaged, and my challenge is to fully waterproof the replacement wood before re-applying wonderboard and tiles. No matter what material I use to waterproof, the big challenge is waterproofing the interface between old and new. A friend suggested fluid applied elastomeric membrane, which is basically liquid plastic or liquid rubber – paint it on and it dries to a flexible, waterproof membrane.
I’ve searched the web and found products, but it’s not clear I can pick up anything at my local supply places. Does anyone know of a good, ‘retail’ product that dries to a flexible, thick, membrane, and applies from a tube or similar? Thanks.
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Chris,
I am not sure what you are doing but here is an elastomeric caulk that I use.
http://www.sashcosealants.com/htmlfiles/lexel.html
KK
*I used a trowel applied membrane in a shower some years ago. Sorry I can't rember the brand, but a couple of tile supply houses knew exactly what I was asking for. One thing I remember very well -- once you start, you (almost) can't stop. If the stuff sets for more than about 12 hours (check the directions carefully) NOTHING adheres to it. You need to lay only what you can cover. If you must leave the job, sleep, etc. you can leave a few inches uncovered, then overlap with the stuff as you move to a new area, but you must do so within the allotted time. This can be a real problem if you run out part-way through the job and your supply house is closed. Buy more than you think you need, making sure your supplier will take it back if you don't need it.I also found a lot of resources by searching google and searching for trowel applied membrane (rather than elastomeric membrane). I'm pretty sure that's what the trade calls it.
*Chris- There is a cold applied elastomeric waterproof membrane that I have used on foundations in very wet areas before. The product name is Sonneborn sonoshield HLM 5000. It comes in three diff. grades ( roller, spray, or trowel) and I buy it at my local concrete supply house. Sonneborn has a lot of products, so you should hit their web site at http://www.chemrex.com. Good luck - Kim Sheehan Meridian Home Builders
*only a small part is damaged...right now. if the grout is failing in one spot, and water is leaking, and damaging, the whole of it can't be far behind.http://www.gaco.com/default.htmhttp://www.generalpaint.com/spantex.htmlavailable retail... around $ 1,300.00 for materials, not including ACX finish ply over CDX sub, and flashing details, and screws, and labor, and respirator protection, and applicator tools, to cover 300 sq ft.you wouldn't be using the AC, since you're covering with tile...
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I am repairing an outdoor area of my house that involves tiles and wonderboard over a wood structure. The 'best solution' would be to completely rip up the whole area and re-do it, correctly laying down a waterproof membrane of some sort, etc.
However, only a small part is damaged, and my challenge is to fully waterproof the replacement wood before re-applying wonderboard and tiles. No matter what material I use to waterproof, the big challenge is waterproofing the interface between old and new. A friend suggested fluid applied elastomeric membrane, which is basically liquid plastic or liquid rubber - paint it on and it dries to a flexible, waterproof membrane.
I've searched the web and found products, but it's not clear I can pick up anything at my local supply places. Does anyone know of a good, 'retail' product that dries to a flexible, thick, membrane, and applies from a tube or similar? Thanks.