Wall Tiles - Hardi Backer
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Wall Tiles - Hardi Backer
Hi,
Hoping to get some answers/thoughts on my recent install. I recently tiled a wall 8' X 16' with a porcelain tile, fairly heavy. It is 3/8 inch thick and dimensions are 6" x36". I talked to the guy at Lowes and he sounded like he knew what he was doing as he did the same to his home and had prior experience. I installed 1/4" hardi backer over 1/2 inch drywall to hang the tile. Used the hardi backer 1 5/8 inch screws at least every 6 inches and got the studs on all of them. I then had a professional come in and tape the seams and install using a MAPEI thinset. It came out really nice and straight. However....
After install I was talking to some other contractors who had some concerns that I should have used 1/2" hardi backer and was worried about the screw depth of the 1 5/8 screw. Using that screw I at least have 3/4 (actually .87") of an inch into the stud, which is quite a bit in my opinion but I wanted to hear what others thought about this install, between both the thickness of the hardie backer and the screw length. Is this dangerous? This is not a bathroom. Just an interior wall for a feature.
If I could do it over, I would tear the drywall down and install 1/2" hardi backer, then tile.
What is odd is that they recommend only 1 1/4 in screws over the half inch hardibacker, which is exactly 3/4 of inch into the stud, which is what I currently have??
Hoping to get some answers/thoughts on my recent install. I recently tiled a wall 8' X 16' with a porcelain tile, fairly heavy. It is 3/8 inch thick and dimensions are 6" x36". I talked to the guy at Lowes and he sounded like he knew what he was doing as he did the same to his home and had prior experience. I installed 1/4" hardi backer over 1/2 inch drywall to hang the tile. Used the hardi backer 1 5/8 inch screws at least every 6 inches and got the studs on all of them. I then had a professional come in and tape the seams and install using a MAPEI thinset. It came out really nice and straight. However....
After install I was talking to some other contractors who had some concerns that I should have used 1/2" hardi backer and was worried about the screw depth of the 1 5/8 screw. Using that screw I at least have 3/4 (actually .87") of an inch into the stud, which is quite a bit in my opinion but I wanted to hear what others thought about this install, between both the thickness of the hardie backer and the screw length. Is this dangerous? This is not a bathroom. Just an interior wall for a feature.
If I could do it over, I would tear the drywall down and install 1/2" hardi backer, then tile.
What is odd is that they recommend only 1 1/4 in screws over the half inch hardibacker, which is exactly 3/4 of inch into the stud, which is what I currently have??
Last edited by Skidooman34; 07-16-18 at 01:54 PM. Reason: Add detail
#2
I talked to the guy at Lowes and he sounded like he knew what he was doing
I would have gone with the 1/2", the 1/4" material is not real structural but If you used thinset between the CB and drywall that would be ok
Another question:
I then had a professional come in and tape the seams and install using a MAPEI thinset.
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Yeah, should not have relied on the Lowes tech. As I have had similar experiences where they didn't know squat. I did not put thinset behind the hardibacker. Do you think this needs to be torn down and redone? Could the whole thing collapse or slowly just fall apart?
Also, I used a guy to install the tiles because I thought the majority of any concern here was with the bond of the tile to the wall. Making sure one does not fall, so I didn't want to take that risk. But now realize I may have a bigger problem.
Also, I used a guy to install the tiles because I thought the majority of any concern here was with the bond of the tile to the wall. Making sure one does not fall, so I didn't want to take that risk. But now realize I may have a bigger problem.