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Old 08-12-2010, 07:02 PM   #16
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Correct way to install bathtub please


oh'mike'
Small town & not many choices of products. I can get plywood & no formaldehyde plywood & Wonderboard. I have to mention that I am very sensitive to chemicals. My DensArmor samples were OK for me but I'm still trying to find out where & how to get it. Most drywall isn't OK for me. That's part of the reason (& mold prevention) for wanting the Wonderboard. Peel & Stick won't stick to the coated side of Wonderboard? I may only have 2 choices, Wonderboard or plywood with something over it if need be ??? (that I tolerate of course) I didn't know there was such thing as waterproof plywood & don't know if I can get it here. What process do you think will cut the mustard in this damp climate ? I have to be creative here with products. Thanks.
Laura

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Old 08-12-2010, 07:17 PM   #17
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Correct way to install bathtub please


Regular a-b plywood--exposure 1--sanded will work well--That is a very common product.
That is an exterior glue---

I just don't think the peal and stick will stick to wonder board.

Wonder board will work behind the tub surround--but above the surround will look a bit rough--

You said regular drywall gives you troubles--you could skim coat and even texture the exposed wonder board--or finish the exposed area with tile--

If you have allergys to latex--use 'unmodified ' thinset to stick your tiles and tape any seams.

----Mike-----

Where are you from? Damp climate--
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Old 08-12-2010, 08:13 PM   #18
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Correct way to install bathtub please


Thanks so much oh'mike.
I'm in Northern California. Last winter was my first winter here. Bought the house in Oct. Bone dry summers & very wet from mid Oct til June. Mold showing up everywhere with no apparant cause. That's why I'm being so cautious with the tub install. I just may leave out the insulation when I gut the moldy-smelling bedrooms !
Laura
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Old 08-12-2010, 11:51 PM   #19
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Correct way to install bathtub please


I used to live in Boyes Hot Springs---I understand all about soggy wet--mildewed bedding--

nothing ever dries--California winters.

If you can, have a good siding guy come over when the interior walls are stripped--

I'd put money on a tired old siding job outside causing all that mold inside---

I hope Tom is looking---His knowledge of siding out strips mine by a mile.--Mike--
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Old 08-13-2010, 12:28 AM   #20
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Correct way to install bathtub please


So you get it - the winter moisture. I was teetering on moving to dry Stonyford but I'd have to drive to Chico for a decent grocery store. I'm on the east side of No Cal so bone dry summers are why the house isn't completely moldy. I'm thinking of closing the vents in my attic in the winter too. Not sure. Tired old siding you say...try none. Just 1/4 " unfinished hardwood panels. Unfortunately I can't afford siding. (another reason for the Wonderboard in the bathroom) I plan to get rid of the bottom 3 or 4 feet of hardwood that's moldy from splashback, replace with painted plywood, & cover with roofing metal there... with at least an inch air gap. I sure hope this house can be de-molded & I can get moved in before I run out of money.
Laura
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Old 08-13-2010, 12:39 PM   #21
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Correct way to install bathtub please


BTW, that foam double sided tape probably allows the movement needed for those large sheets of plastic on the surround.
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Old 08-13-2010, 07:10 PM   #22
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Correct way to install bathtub please


xx Paul You're probably right. I didn't think of that. I don't think I'll tolerate that stuff. Shoot. What would be some other options? I was thinking silicone. Also I thought why not a slim piece of wood along the top & sides with the surround sorta tucked under it - not really attached. Ya think the thing might be so soft as to buckle out if I did that ? Sheesh, this illness is a pain in the butt.
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Old 08-13-2010, 07:38 PM   #23
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Correct way to install bathtub please


There is a latex caulk called Big Stretch I think, you might want to look at.

BTW, I'll bet there isn't much to that double sided tape. Usually it's closed cell with adhesive on both side. Buy a roll and try it, I guess. It's going to have ALOT fewer VOC's that any of the caulks you are likely to find, since it's already "made", and doesn't have to change properties on your wall without offgassing anything.

Really, I think the tape is probably the BEST solution for you!
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Old 08-14-2010, 02:25 AM   #24
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Correct way to install bathtub please


If it's made of the same stuff as those dark gray sponge strips with one adhesive side it won't be OK. I'll check it out though. I have neutral cure silicone & 2 caulks by Chemlink which are fine for me - Novalink is a sealant & M1 is a sealant/adhesive. Both can take 25% joint movement. Would one of these work in case the tape kicks my ass?
Laura
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Old 08-14-2010, 06:02 AM   #25
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Correct way to install bathtub please


Silicone caulk is a tremendously strong adhesive----Fish tanks are glued together with it----

If you are sensitive to chemicals---look for one that is pure silicone without the fungicide,(avoid the ones labeled "kitchen and bath")----

You might want to wipe the back of the surround with some alcohol -to remove any oils left over from the manufacturing process.-----Mike-----
"
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Old 08-14-2010, 12:39 PM   #26
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Correct way to install bathtub please


You guys are on the ball ! Good thinking on wiping it with alcohol. I use the more benign vodka. The silicone I have is Silicones Unlimited SU 5005. It's the most non-toxic aqaurium sealant I found. It's not only strong enough to hold a tank full of water but non-toxic enough for use with our cold-blooded friends.
Laura

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