Prepping tub surround with DensShield... Do's & Don't???


Old 09-26-12, 03:13 PM
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Prepping tub surround with DensShield... Do's & Don't???

Hello all,
Here's what I have going. Gonna tile a tub surround. There is a window centered and that is the only exterior wall. I've got the DensShield purchased and have a few questions about it. What are you guys using as fasteners? Can I used the faced r-13 that's up or no? I've read/heard yes and no. Do I run this over the tub lip or butt it? I'm sure Ill have more questions and will post them as they come to me.
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Old 09-27-12, 08:59 PM
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Hi Blue,

You can't run the board over the tubs lip. Either shim the walls out enough to clear it or stop at the lip then silicone it well being careful not to spread silicone too much, cuz nothing wants to stick to silicone very well.

Windows within a tub/shower area is never good. You'll need to be sure to apply a liquid membrane over the tape/thinset joints & fasteners. Also silicone the Denshield/window joints. A plastic extra wide drape would help keep water away from the sill.

As far as the insulation goes, unless the Denshield covers the entire cavity of that wall, I think you're ok as far as vapor goes. However, you could simply slash the vapor barrier if it does cover the entire wall cavity.

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