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Old 04-14-2009, 05:00 PM   #1
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Drywalling around a fiberglass tub/surround...


So, I'm remodeling / repairing one of my bathrooms...



I am already dealing with the fact that the original builder didn't use any form of moisture-resistant drywall (don't know if greeboard was available in the 1970's). As the pic shows, there's what appear to be water wicking up where the drywall met the tub surround mounting flange. Is there a special way to terminate the drywall at this point? Maybe with a J-channel or something?

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Old 04-14-2009, 10:25 PM   #2
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Drywalling around a fiberglass tub/surround...


Does this tub also have a shower?

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Old 04-14-2009, 11:38 PM   #3
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Drywalling around a fiberglass tub/surround...


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Does this tub also have a shower?
Yes, it does. Here's a shot of the bathroom before we tore it down...
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Old 04-15-2009, 08:43 AM   #4
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Drywalling around a fiberglass tub/surround...


what are you planning to go back with in that area?
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Old 04-15-2009, 11:53 AM   #5
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Drywalling around a fiberglass tub/surround...


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what are you planning to go back with in that area?
I chose GP's DensArmor Plus Moisture and Mold Resistant wallboard. It has a glass facing instead of paper so it's much less prone to mold taking hold in the future...
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Old 04-15-2009, 12:15 PM   #6
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Drywalling around a fiberglass tub/surround...


what I ment was are you planning another surround or tile or what .Personaly I would do tile but then you need backerboard or cement board and waterproof membain for tile
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Old 04-15-2009, 12:18 PM   #7
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Drywalling around a fiberglass tub/surround...


Ahhh, well there will probably be tile ULTIMATELY but we're just going to wall the bathroom up for the time being since it will probably need to stay that way for 2-5 years when we get around to that room in our scheduled plans. We will be keeping the tub surround, and all the original fixtures, etc and just getting rid of the mold and walling it back up. I just don't know the best way to terminate the wallboard where it meets the fiberglass...
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Old 04-15-2009, 12:28 PM   #8
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Drywalling around a fiberglass tub/surround...


normally you would bring it to about 1/8 to 1/4 above the tub lip then use water tight calk around the edge but in your case if I could get it behind the lip and then calk I would do that.I think that would look better and keep the water out.I would also treat the wall board before you paint it.I mean it is just wall board with a fiberglass coat all the protection it can get will help to last the 2-5 till you get to the tile.........Ok I looked at the pic again and that lip is pretty high to go behind so go about an eight from the lip and calk it good
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Old 04-15-2009, 12:30 PM   #9
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Drywalling around a fiberglass tub/surround...


by the way if you had mold before you need to srub all the wood and the area around with bleach and let it dry before you put up anything
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Old 04-15-2009, 12:32 PM   #10
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Drywalling around a fiberglass tub/surround...


So you are doing wallboard & then a tub/shower surround?
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Old 04-15-2009, 01:32 PM   #11
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Drywalling around a fiberglass tub/surround...


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normally you would bring it to about 1/8 to 1/4 above the tub lip then use water tight calk around the edge but in your case if I could get it behind the lip and then calk I would do that.I think that would look better and keep the water out.I would also treat the wall board before you paint it.I mean it is just wall board with a fiberglass coat all the protection it can get will help to last the 2-5 till you get to the tile.........Ok I looked at the pic again and that lip is pretty high to go behind so go about an eight from the lip and calk it good
What sort of treatment can I do on the wallboard before I paint it? Are their spray coatings or something like that I can use?

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by the way if you had mold before you need to srub all the wood and the area around with bleach and let it dry before you put up anything
I absolutely plan on doing this before I close it back up.

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So you are doing wallboard & then a tub/shower surround?
No, I'm re-doing the wallboard that was damaged by moisture and mold around an existing tub / shower surround. I'm hoping to not have to pull the shower out but I'm guessing now that I'm going to need to do this to get all the moldy wood treated before I close it all up...
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Old 04-15-2009, 01:46 PM   #12
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Drywalling around a fiberglass tub/surround...


ok if I am understanding this whole job your just replaceing wall board around the tub/shower area right.If thats the case this will not last but might make it the few years you want.As far as a treatment I would do redgaurd or something like it and then a water mold resistant paint might be overkill but it this case I cant see it hurting and its not expensive.Make sure you calk/seal the edges thats where your moister will get in.I would have save the money on the board and just fixed it right this time in tile as you plan to do later,I mean you got it all torn out anyway so why not do it right and how you want without doing it twice? but thats just my two cents worth,If I am wrong on what I think your trying to do then please explain it a bit more ok
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Old 04-15-2009, 01:51 PM   #13
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Drywalling around a fiberglass tub/surround...


Naw, you make a lot of sense --and I'm going to have to think about it. It may very well not be as much work to just tile the area right now than wallboarding it up. I think the main issue is time. We need this front bathroom up and functional ASAP and I don't know if I can afford the time to do it right at this point... I'll definitely give it some serious thought though...
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Old 04-15-2009, 01:58 PM   #14
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Drywalling around a fiberglass tub/surround...


for all your going to go through with what your doing it aint going to take much more time to tile it maybe a day or two to let the thinset and grout dry but you would have to wait for mud to dry too and how many coats so you see it really aint much more and it would be done right......................................yeah im trying to convince you to do it right lol
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Old 04-15-2009, 06:46 PM   #15
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Drywalling around a fiberglass tub/surround...


Greenboard was available in the '70's and actually was better than the so-called green board made today. You're best off using the DensArmor. As stated, hold it up off the lip of the surround and caulk. The water "wicking" when the board sits down all the way is usually what causes the problem. The tile would be nice...

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