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NAC SAM 3 Sound Abatement & Crack Isolation Membrane, 3 ft Roll

Crack Suppressant

Crack-isolation membranes stop existing and future slab cracks from telegraphing up into finished tile. Shop ECB anti-fracture membrane rolls and kits plus SAM 3 combination sound-and-crack membrane.
  • 408149 88024

    NAC SAM 3 Sound Abatement & Crack Isolation Membrane, 3 ft Roll

    T408149

    $22999
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  • 408089 06136

    NAC ECB 75 Anti-Fracture Crack Isolation Membrane, 3 ft Roll

    T408089

    $23649
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  • 408095 24030

    ECB 2' Large Tile Anti-Fracture Membrane Kit

    T408095

    $9999
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  • 408093 42012

    ECB 1' Anti-Fracture Membrane Kit

    T408093

    $9999
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Shop Crack Isolation & Anti-Fracture Membrane

Concrete cracks — the question is whether your tile cracks with it. Crack-isolation membranes create a slip layer that absorbs in-plane slab movement so hairline cracks never reach the tile above. This collection carries NAC ECB anti-fracture membrane in rolls and repair kits sized for single cracks or full floors, plus SAM 3, which pairs crack isolation with sound abatement in one layer.

Where Crack Isolation Pays Off

  • Over existing hairline cracks — bridge and isolate before tiling.
  • On green or control-jointed slabs — protect tile that crosses future movement lines.
  • Large-format installs — bigger tiles show cracks sooner; isolation is cheap insurance.

Why Buy Crack Isolation from Tile Outlets of America

Membrane, primer, and the right mortar for both sides of the assembly, 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

Will tile crack if my concrete slab cracks?
Without protection, usually yes — cracks telegraph straight up through mortar into tile and grout. A crack-isolation membrane between slab and tile absorbs that movement so the tile stays intact.
Can I tile over existing cracks in concrete?
Over hairline, in-plane shrinkage cracks, yes — cover them with an anti-fracture membrane like ECB, extending well past the crack on both sides. Structural cracks with vertical movement need repair first, not just a membrane.
What's the difference between crack isolation and uncoupling?
Both manage in-plane movement. Crack-isolation membranes bond fully and are rated for specific crack widths; uncoupling membranes create a free-movement layer. Full-floor protection can use either; targeted crack treatment uses an anti-fracture membrane.

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