Product #

170.5 Sound & Crack Isolation Mat is a high performance anti-fracture / sound and crack isolation membrane designed to be used under thin-bed adhesive for interior floor installations of ceramic tile, marble, stone and brick to reduce the transmission of impact noise and help provide soundproofing between floors and isolate cracks in the substrate.


Product Overview

This acoustical floor underlayment muffles impact noises through ceramic tiles, stone and other hard surfacing materials while protecting tile from crack disfiguration in commercial and light institutional applications. 170.5 Sound & Crack Isolation Mat is comprised of 89% post- consumer recycled content* making it eco-friendly!

*See Data Sheet 35615.0 for complete product information. 


Features & Benefits

  • Delta IIC rating of 22 per ASTM 2179 Delta Impact Insulation Class exceeds code requirement through independent testing
  • With an IIC rating of 50, it is approved for Commercial Use per the International Building Code
  • Anti-facture membrane / sound and crack isolation eliminates transmission of cracks up to 1/8” (3mm) from transferring to the finished floor helping to protect the tile installation from unsightly crack disfiguration
  • ASTM C-627 “Moderate” Robinson floor rating allows this durable floor underlayment to be used in interior, dry, commercial and light industrial applications
  • Meets ANSI A118.12 specifications*
  • Comprised of 89% post- consumer recycled content*, it contributes to LEED credits, is eco-friendly and GREENGUARD certified 
  • It’s easy and quick to install with a suitable LATICRETE thin-set mortar and standard tools*See Data Sheet 35615.0 for complete product information

Product Specifications


Product #
Patent #(s)
Available Colors
Part of System LATICRETE®
Country Availability Canada, United States
Substrates Cement Backer Board, Cement Terrazzo, Ceramic Tile and Stone, Ceramic Tile and Stone, Concrete, Exterior Glue Plywood, Mortar Bed
Packaging Summary
  • 4 FT x 30 FT (120 SFT), (1.2M x 9.1M) (11.1 SQM) ROLL
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