Flooring Tile - Marble tile countertop
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Divvy
03-12-03, 01:03 PM
I am building a marble, tile countertop for an island. I do not want to use grout. Is this acceptable? Also, What thickness of plywood should I use if I am using backerboard on top of it or should I even be using backerboard?
WJS_SR51
03-12-03, 02:40 PM
If this island countertop is in your kitchen,,,,,,,,,, most of us would rather that you install granite instead of marble. The reasons are MANY.
If you don't grout at all, the liquids will find their way to the substraite . If that is wood it will eventually cause problems.
Why not consider 1/16"grout joints or smaller and use unsanded grout.
There are several 1/4" concrete backer boards on the market that you could apply over plywood. Use thinset instead of mastic.
What color marble were you thinking about ? Some colors of marble require epoxy adhesives because they are water sensative and will warp.
Plywood or MDF, roofing felt or visqueen and concrete backer board would be fine. Keep the liquids away from the plywood or MDF but please grout to keep the germs up on top where you can disinfect them.
As far as how thick should the plywood be? How are you going to treat the edges ? Are you using Oak moldings or stone or ?????
Plywood has a tendency to warp-- can you screw it down well enough to prevent the warping ?
Consider 1/2" or 3/4" MDF because it is as flat as can be .(medium density fiberboard) covered with roofing felt or visqueen and toped with 1/4"concrete board.
Most cabinet makers use partical board to put formica on, not plywood 'cauz plywood warps.
If you don't grout at all, the liquids will find their way to the substraite . If that is wood it will eventually cause problems.
Why not consider 1/16"grout joints or smaller and use unsanded grout.
There are several 1/4" concrete backer boards on the market that you could apply over plywood. Use thinset instead of mastic.
What color marble were you thinking about ? Some colors of marble require epoxy adhesives because they are water sensative and will warp.
Plywood or MDF, roofing felt or visqueen and concrete backer board would be fine. Keep the liquids away from the plywood or MDF but please grout to keep the germs up on top where you can disinfect them.
As far as how thick should the plywood be? How are you going to treat the edges ? Are you using Oak moldings or stone or ?????
Plywood has a tendency to warp-- can you screw it down well enough to prevent the warping ?
Consider 1/2" or 3/4" MDF because it is as flat as can be .(medium density fiberboard) covered with roofing felt or visqueen and toped with 1/4"concrete board.
Most cabinet makers use partical board to put formica on, not plywood 'cauz plywood warps.