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Home > Archive > Home Repair forum > April 2006 > tile countertop
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| greetings, i am going to tile a kitchen island top. i will be using 1/4
inch hardi backer board on top of 3/4 inch plywood. what is the best way
to secure the backer board to the plywood? should i glue it down and use
screws or just screws? what type of screw should i use? should i tape
the backerboard seams? finally, what depth trowel should i use for the
mastic and what profile, pointy or squared.
thanks, cj
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| Use thinset to lay the tile. Use liquid nail and drywall screws for the
hardi board.
What tile are you using? Usually 1/4 x 1/4 x 1/4
"cj" <changbah@charter.net> wrote in message
news:zKu1g.106$Vp7.104@fe02.lga...
> greetings, i am going to tile a kitchen island top. i will be using 1/4
> inch hardi backer board on top of 3/4 inch plywood. what is the best way
> to secure the backer board to the plywood? should i glue it down and use
> screws or just screws? what type of screw should i use? should i tape the
> backerboard seams? finally, what depth trowel should i use for the mastic
> and what profile, pointy or squared.
> thanks, cj
>
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| Newfie 2006-04-19, 3:21 pm |
| Backer board should be installed using screws and adhesive. I would
prefer to use 1/2 inch cement board. Use a 1/4" trowel for applying
the adhesive to be used for the Backer Board. I use Rock-On Cement
Board Screws. Tape the seams using fibreglass tape and adhesive. I
also apply a waterproof membrane to the Backer Board after it is
installed. I use the Kerdi system and it works miracles.
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| can you give me more info on the waterproof membrane? why would i need
it..i thought the backerboard was waterproof
thanks, cj
Newfie wrote:
> Backer board should be installed using screws and adhesive. I would
> prefer to use 1/2 inch cement board. Use a 1/4" trowel for applying
> the adhesive to be used for the Backer Board. I use Rock-On Cement
> Board Screws. Tape the seams using fibreglass tape and adhesive. I
> also apply a waterproof membrane to the Backer Board after it is
> installed. I use the Kerdi system and it works miracles.
>
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| PipeDown 2006-04-19, 5:21 pm |
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"cj" <changbah@charter.net> wrote in message
news:zKu1g.106$Vp7.104@fe02.lga...
> greetings, i am going to tile a kitchen island top. i will be using 1/4
> inch hardi backer board on top of 3/4 inch plywood. what is the best way
> to secure the backer board to the plywood? should i glue it down and use
> screws or just screws? what type of screw should i use? should i tape the
> backerboard seams? finally, what depth trowel should i use for the mastic
> and what profile, pointy or squared.
> thanks, cj
>
I just use a layer of thinset (same stuff used to set the tiles), place the
cement board on top then nail or screw the board down.
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| PipeDown 2006-04-19, 5:21 pm |
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Actually backerboard and thinset are somewhat porous (depending on the
brand), it's the tile and grout (sealed) that form the primary waterproof
layer. For a counter, a liner is unnessary.
A bathroom floor on a second floor might benefit from a liner or a basement
where moisture might come up from beloew.
"cj" <changbah@charter.net> wrote in message
news:Iew1g.289$%96.166@fe06.lga...
> can you give me more info on the waterproof membrane? why would i need
> it..i thought the backerboard was waterproof
> thanks, cj
>
> Newfie wrote:
>
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