I was looking for manufacturer's recommendation for draining behind concrete or backer board , but could not find anything. I found you, Dennis the diy, and complement you and your wife for the active work of installing sheeting and backerboard. This has been a quandry of mine , even looking for pros to install the same. None were as explicit with the detail as your presentation , and not event concerning anything to drain behind the backer to the membrane at the floor. I amd still trying to figure how to clear the plastic of water . Possibly plastic mesh that will eventually dry with a postitive air supply to the backer region.
I bought 1/4 inch durarock for the ceiling of my shower, but am uncertain how to cover it. Can I just paint it or use a waterproof membrane? Then what? Tiling over it would be something that would be beyond my skill level. Thank you and your wife for the video!
First, I would not use 1/4 inch with or without tiling. You can cover it with a waterproof membrane or they also make a waterproofing paint. You are welcome. Have you tiled the walls?
@doityourselfdenniscom sorry for delay, I just saw your response. No, I haven't started tiling yet. I'm using 1/2 " durarock for walls and using redgaurd over the walls with the fabric on seams. I was going to use 1/4" durarock on ceiling because I thought it would be lighter, but will switch to 1/2" and redgaurd. Do you think i can paint over redgaurd? Also, I'm using a composite stone prefab shower pan (Castico). They do have an installation video, but it's not very detailed. They recommend the flange in front of the backerboard with silicone to seal. I'm concerned about that. I'll send a link to the video. Thank you again, I was surprised and grateful for your response. I appreciate the old school methods that have standed the test of time.
@@annan3450 AS far as painting over the redgaurd, you should probably check with the manufacturer. I have never painted over it. I would also be leery of the flange in front of the board. You might call the manufacturer to double check. Hope this helps.
That is a good idea. I have noticed since doing this video, which it is a few years old, the screws do seem to go in better. Especially since the heads have storx heads.
I have to agree with one of the other replies that using a vapor barrier behind the cement board will trap moisture, and then there's the issue of moisture possibly going through one of the many holes you are poking in it when you install the cement board. If you install a vapor barrier above cement board on the ceiling, the moisture will only have one place to go - down. And it could create mold or affect the ability of the cement board/tiles to remain on the ceiling. The better way is to waterproof over the cement board, which would create a more consistent barrier, without any holes in it, that will allow moisture to drain properly. And unless you're making a steam room, there's no need to even put a moisture barrier on the ceiling because very little moisture will make it that far and even if it does it will either evaporate in the attic or come back down the way it went up as it cools. But if there's a vapor barrier behind the cement board, it won't evaporate.
I have to disagree. I have been doing this for a long time and have never had an issue. This happened to be my personal home and the tile has been up for 11 years and I have had no issues. The Hardie backer board is water proof, so the moisture has got to get passed it first.
Hi, I want you to know that installing plastic or tar paper behind your wall tile backer board is NOT a good idea. All it will do is create a mold sandwich between the plastic and back of the tile backer board. If you properly water proof your tile backer there is no need for plastic and any moisture that may get behind the tile backer will escape through walls etc and will not accumulate.
For walls, when it saturates the water will gravitate towards the bottom of the cement board and into the shower pan (assuming the board is not touching pan/straw effect). For ceilings I would agree.
