Indestructible Polypropylene Underlayment. Protects ceramic tile against crack migration on concrete slabs at the most economical costs.

Covers concrete cracks permanently!
K-3 Crack-Mask is a non-woven fabric made up of polypropylene fibers. These fibers are needle formed, a stable and durable network such that the fibers retain their relative position. The fabric is inert to naturally encountered chemicals, alkalines, acids and biologicaldegration. 5.0 osy Polypropylene conforms to Minimum Values listed in the table below.

Outstanding Features:

- Crack-Mask is quicker and easier to use than liquid underlay products and is much more effective than thin sheet membranes used by builder's today
- Indestructible (Try to tear it)
- Water resistant/cannot absorb water like felt paper
- For marble, ceramic tiles, interior floor tile, Stone,Terrazo, etc.

Note: When using for outside patio, it is required to use POLYPROPYLENE WATERPROOF ADHESIVE.

Installation Instructions:

1. Do not begin until the slab has cured to proper specifications

2. Clean slab of dirt and debris

3. Apply Polypropylene Crack-Mask Adhesive using a 3/32 x 3/32 x 1/8" notched trowel

4. Roll fabric over adhesive

5. Allow to cure for a minimum of 2 hours

6. Install tile using the manufacturer’s recommended installation procedures