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Old 10-06-2009, 11:35 PM   #1
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What size backerboard do I need on floor?


I'm installing 12x12 ceramic tiles on 3/4" osb subfloor on 2x6 floor joists spaced 16" on center 5.5 feet unsupported span.

I'm not sure what thickness of backerboard I need. This is my first time, any other advice greatly appreciated.

Thanks in advance.

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Old 10-07-2009, 06:58 AM   #2
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What size backerboard do I need on floor?


1/4", unless you need more height, use 1/2".

Also that OSB is at the minimum for a tiled subfloor, if you have the room, add a layer of 1/2" plywood for a stronger floor.

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Old 10-09-2009, 01:12 PM   #3
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What size backerboard do I need on floor?


Thanks!

If the floor structure is borderline, would I be better off using a different product under the tile? IE : Wonderboard instead of hardibacker, etc etc...

Also : The room i'm tiling is less than 50 square feet, so I'm probably not going to be making too many cuts if I lay it out properly. What kinds of things can i use to cut tile rather than buying a 500 dollar tile saw?

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Old 10-09-2009, 01:54 PM   #4
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What size backerboard do I need on floor?


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What kinds of things can i use to cut tile rather than buying a 500 dollar tile saw?

You can rent that 500 dollar tile saw.

You can buy a cheaper ($60.00 to $90.00) tile saw. I did this option when I tiled my bathroom (first-timer).

If you bought your tiles at an apron store, some will do cuts for a small fee.

There are also score-and-snap tools. I assume they work best on the thinner subway tiles. If your tiles are as think as mine were, I don't think I would go that route.
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