How can I install outside for a deck slate tile instead of pressure treated lumber?
July 12, 2009
I need to put a raised deck outside, will be approx 4 ft off the ground. I live in Atlanta were we do get some light winter weather so I will be using slate. Can I frame it out then use a sub floor material with cement board over that, then the slate tile on top of the cement board. Will this work for outdoors?
Posted in Slate Floor Tile
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July 12th, 2009 at 3:53 pm
This should work…be sure you build strong enough to support all the weight of the cement board, tile, mortar and grout because it will be heavy.
I’m not sure what Atlanta weather is like, you may want to check with your local building material supplier on what precautions to take in your area – I’m specifically thinking of freeze/thaw issues.
July 12th, 2009 at 3:53 pm
Slate and tile requires a minimum substrate of 1 1/4 inch thick.
I never go less than 1 1/2 on a regular floor, glued/nailed and screwed each layer. If it is strong enough (not too much flex ) it will work for you. Special thin set is used with an additive mixed in for that application. (outdoor and freezing temps)
I as a contractor and tile man for many years Always question customers wanting slate because it is VERY SLIPPERY when WET and I have done several jobs that people wanted replaced after a few years because they then did not want slate anymore.
Some Porcelain Tile is rated for outdoor use and I think has a much nicer look. You do want a less slip texture to the surface and you will feel the difference when you touch them.
KEEP IN MIND THAT ANY TILE OR STONE IS MUCH HEAVIER THAN WOOD and you structure must be way stronger than a regular deck along with your 6×6 supports.
Good Luck