Mapei Mapeguard UM 35 Uncoupling Crack Isolation Membrane, 108 Sq Ft Roll for Ceramic Tile And Stone Tile, 1/8 Inch Thick HDPE Waterproofing Flooring Underlayment open-box Trusted by professional tilers

Trusted by professional tilers

Advanced Vapor Retarder: Low permeability rating offers superior vapor control

7-Day Programmable Scheduling: 7-day programmable scheduling lets users set unique heating schedules to optimize energy savings and daily routines

while reducing surface dusting and improving elasticity

It could be used with a waterproofing membrane

Mapei Mapeguard UM 35 Uncoupling Crack Isolation Membrane, 108 Sq Ft Roll for Ceramic Tile And Stone Tile, 1/8 Inch Thick HDPE Waterproofing Flooring Underlayment open-box Trusted by professional tilersProduct Features: High Performance Crack Isolation: High performance uncoupling membrane controls substrate cracks up to 1 8 (3 mm) for reliable tile or stone installations. Waterproof Vapor Protection: Waterproof and vapor management layer enables up to 25 lb MVER and 100% relative humidity control via air channel design. Low Profile Tile Support: Low profile 1 8 thickness reduces floor build up while offering robust support for large format tile,