3.28 in. x 16 ft. 5 in. PROVA FLEX-HEAT Underlayment Roll 54 SQ FT

PROVA FLEX-HEAT is an uncoupling and crack isolation membrane for tiled floors that includes channels for inserting low-voltage heating cables sold separately. The underlayment consists of a polypropylene sheet with studs for carrying heating cables, channels for managing vapor, and a polypropylene nonwoven anchoring fleece for securing the membrane to the substrate. The fleece layer is secured with a polyolefin-based adhesive, and it provides shear stress control by neutralizing stress caused by substrate movement. PROVA FLEX-HEAT accepts heating cables up to 5-mm.

• • Made of two layers of polypropylene for mechanical bonding, vapor management and Sheer Stress control to neutralize stress caused by substrate movement
• • Protects tile or stone floors from cracking as substrates move or settle and accepts heating cables (sold separately) up to 5 mm to create comfort via in-floor heat
• • 3.28 in. W x 16 ft. 5 in. L (5 sq m / 54 sq ft.)
• • Red primary layer with white fleece bottom layer
• • Vapor Management System: Open-air channels beneath the fleece layer provides a path for moisture to dissipate. Well suited for below-grade installations
• • 0.26′′ (6.5 mm) thick membrane: Can be used without heating cables for matching up to higher floors to achieve a level transition
• • Versatile Heating Cable Compatibility: Can be used with multiple wire sizes of up to 0.2" (5 mm) thick
• • Achieve 3′′ (7.6 cm) Cable Spacing: Provides most efficient heat distribution as per wire manufacturer specifications
• • Premium polymer-modified thin set mortar required for installation, no premixed mortar or mastic
• • Install with 1/4 in. x 1/4 in. Square Notch Trowel