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DITRA Uncoupling Membrane 150 Sq Ft Roll

Uncoupling Membrane

Uncoupling membrane absorbs the stress between substrate and tile, preventing cracks from telegraphing into your finished floor. Many also provide waterproofing and vapor management for showers and heated floors. Browse rolls and sheets to protect your installation.
  • 408107 86445

    DITRA Uncoupling Membrane 150 Sq Ft Roll

    T408107

    $35471
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  • 408109 23910

    DITRA Uncoupling Membrane 323 Sq Ft Roll

    T408109

    $72053
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Shop Uncoupling Membrane for Crack-Free Tile Floors

An uncoupling membrane separates tile from the subfloor's movement, absorbing the lateral stress that would otherwise crack tile and grout. This collection carries Schluter DITRA — the industry-standard polyethylene membrane — in 150 and 323 sq ft rolls, ready for wood and concrete substrates.

When You Need Uncoupling

  • Over wood subfloors, where seasonal movement is guaranteed.
  • Over young or cracked concrete, to keep slab movement out of the tile.
  • Under large-format tile, where a single crack telegraphing through is an expensive repair.

Why Buy DITRA from Tile Outlets of America

Pick up the membrane, the unmodified thinset it requires, and everything else for the assembly in one order — at outlet prices from our Florida warehouses. With three Florida Flooring Supercenters in Fort Myers, Sarasota, and Tampa, you can see products in person and get advice from people who install tile every day.

Frequently Asked Questions

What does an uncoupling membrane actually do?
It separates the tile layer from the substrate so in-plane movement in the subfloor — wood expansion, minor slab cracking — isn't transferred into the tile and grout. The result is a floor that doesn't crack when the structure moves.
Do I need DITRA over plywood?
It's the standard assembly: wood subfloors move with humidity, and DITRA absorbs that movement while also acting as a vapor management layer. Set it in modified thinset, then set tile over it in unmodified thinset.
Which thinset goes with DITRA?
Schluter requires unmodified (dry-set) mortar between DITRA and the tile. Below the membrane, use modified over plywood or unmodified over concrete.
Does DITRA replace a crack isolation membrane?
For most residential floors, yes — uncoupling handles the same in-plane movement. For slabs with active or wide cracks, treat those areas specifically before tiling.

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