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Old 06-10-2020, 07:33 AM   #15
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Do you recommend an Uncoupling Membrane under tile?

Do you use or recommend some sort of "uncoupling" membrane (like Schluter Ditra) if one is installing tile planks over the factory wood subfloor, to help prevent future tile cracking due to normal subfloor movement while driving or leveling? https://www.schluter.com/schluter-us...TRA-XL/p/DITRA

My stock tile floors have no uncoupling membrane under them and I have already had some tiles come loose and a couple have some cracks (which have been now been repaired/replaced).

The factory install is just standard porcelain tile glued (thinset or adhesive - I'm not sure what they used at the factory) directly to the particle board subfloor. It appears to have worked for 15 years (although I'm not the original owner) so perhaps the factory knew what they were doing.

I would like to stay with tile - but I want the "plank" style (12 x 36) which would be more prone to cracking is the subfloor moves/twists a little then the factory 12x12 tiles.

I don't mind the extra cost/labor to put down a uncoupling membrane if it will improve the longevity of the job. What do you think?
Mike ----- 2005 Beaver Patriot Thunder CAT C13 525HP, 42-ft Tag, with HydraLift -----
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Old 06-10-2020, 07:40 AM   #16
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Yes, that material is the best for subfloor use. Large format tiles are fine in a home, but you have to have a perfectly flat floor that does not move or twist to install them in a coach. The criteria for flatness is very important
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Old 06-10-2020, 03:41 PM   #17
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Thanks for the info.
Tiffin Phaeton 40 TGH (2004)
Toad - 2015 Jeep Grand Cherokee
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floor, flooring

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