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Old 02-24-2008, 10:25 AM   #1
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1/4 or 1/2 backerboard


feeling stupidier every day ha.i have 3/8 sheet rock in my hose.im redoing bathroom shower.i framed ,shimmed around shower pan so that everything would be flush on surrounding wall for 1/4 inch backerboard.now i found out you cant use that on walls.what could happen if i used 1/4 inch backerboard and do you think it would be ok to use it on one wall only that joins into existing 3/8 sheetrock and 1/2 inch on the rest.were wanting 3/8 tile.should i start over.thanks
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Old 02-24-2008, 10:29 AM   #2
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1/4 or 1/2 backerboard


Backerboard is important for tiling a shower. Moisture-resistance, strength, tile weight, thinset adhesion, etc. But, if you have a pre-fabricated self-sealing shower enclosure, it can be affixed directly onto the studs with no actual drywall, backerboard, etc. as per the manufacturers' okey-dokey.
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Old 02-24-2008, 10:33 AM   #3
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1/4 or 1/2 backerboard


First off installing tiles over sheet rock especially in a moisture rich environment such as a shower is probably one of the biggest no-no's ever. The tiles will peel off. The framing for the shower should be the same size as the pan (Assuming it is a fiberglass pan) then you install Durock (cementiciouse board) so it comes down over the lip keeping it about 1/2" off the pan so as not to let the Durock be immersed in water if it should leak. Tile walls allowing tile to come down to pan. You really have no way to fasten anything 1/4" and expect it to stay more than a few years.
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Old 02-24-2008, 10:38 AM   #4
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1/4 or 1/2 backerboard


GLASSMAN1, I misunderstood your reference to backerboard as cement board is commonly called that - perhaps erroneously - out here in AZ. Mea culpa. USP45 is 100% correct in the recommendation for the actual material you should ask for and use. And, his reasons are right on the money. Moisture-resistant drywall is called greensheet or greenboard out here.

Last edited by End Grain; 02-24-2008 at 10:43 AM.
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Old 02-24-2008, 11:01 AM   #5
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1/4 or 1/2 backerboard


i have framed the studs so that they are flush with the inside lip of shower pan,also i have put studs were im going to screw the shower door to.the sheetrock is only on one side and its way above were any water is going to hit.the rest is being redone all the way to the ceiling.have you heard of anybody useing 1/4 inch backerboard around showers and was it strong enough to hold the tile?
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Old 02-24-2008, 11:23 AM   #6
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1/4 or 1/2 backerboard


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Originally Posted by GLASSMAN1 View Post
i have framed the studs so that they are flush with the inside lip of shower pan,also i have put studs were im going to screw the shower door to.the sheetrock is only on one side and its way above were any water is going to hit.the rest is being redone all the way to the ceiling.have you heard of anybody useing 1/4 inch backerboard around showers and was it strong enough to hold the tile?
1/4" will not be strong enough for wall tile. You'll need to use 1/2". What kind of backerboard are you going to use?
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Old 02-24-2008, 01:51 PM   #7
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1/4 or 1/2 backerboard


Use 1/2" Cement board in your shower wall area.

Tear the shims out. That way, the difference will only be 1/8".

Make that up, by having the tile sit over the cement board just slightly, (where it meets the 3/8 S/R). Grout the 1/8" gap.

Last edited by AtlanticWBConst.; 02-24-2008 at 01:54 PM.
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Old 02-24-2008, 03:20 PM   #8
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1/4 or 1/2 backerboard


im useing hardi backer board.thanks for information.i geuss we learn as we go .
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