Schluter DITRA-HEAT-DUO-PS Membrane

Schluter DITRA-HEAT-DUO-PS is a peel and stick membrane that features a pressure-sensitive adhesive (PSA) to bond the membrane to the substrate, eliminating the need for thin-set mortar. Quick and easy to install, DITRA-HEAT-DUO-PS is an uncoupling membrane with an integrated bonding fleece that provides sound control, as well as a thermal break. Optionally, the system can be customized with of DITRA-HEAT-HK floor heating cables to create a warm tiled floor.

Floor Warming. Schluter DITRA-HEAT-DUO combines the flexibility of loose heating cables with the ease of installation of mat systems. Cables can be placed wherever heat is desired, without creating height differences in the floor. Self-leveling compounds are not required to encapsulate the cables for ceramic, porcelain, and stone tiles, significantly reducing installation time and effort compared to uncoupling membranes over other electric floor warming systems. Self-leveling compounds are approved for use only when installing alternative floor coverings over the DITRA-HEAT membranes.

Uncoupling. Tile has been successfully installed for thousands of years by incorporating an uncoupling layer, or forgiving shear interface, within the tile assembly. Schluter DITRA-HEAT-DUO-PS provides uncoupling through its geometric configuration, which allows for in-plane movement that effectively neutralizes the differential movement stresses between the substrate and the tile, thus eliminating the major cause of cracking and delaminating of the tiled surface.

Waterproofing. Schluter DITRA-HEAT-DUO-PS provides reliable waterproofing. Its polypropylene composition protects the substrate from moisture penetration, which is particularly important in today’s building environment where most substrates are moisture-sensitive.

The Schluter DITRA-HEAT-DUO-PS membrane does not comply with the requirements specified in ANSI A118.10 – American National Standard Specifications for Load Bearing, Bonded, Waterproof Membranes for Thin-set Ceramic Tile and Dimension Stone Installation. For applications requiring membrane compliance with or certification to the ANSI A118.10, select the DITRA-HEAT-DUO membrane that is installed with thin-set mortar. Alternatively, the DITRA-HEAT-DUO-PS membrane may be covered with the Schluter KERDI membrane, which is certified to meet ANSI A118.10.

Vapor Management. The free space on the underside of Schluter DITRA-HEAT-DUO-PS provides a route for excess moisture and vapor to escape from the substrate that could otherwise cause damage to the tile covering above. Thus, DITRA-HEAT-DUO-PS effectively manages moisture beneath the tile covering.

Support/load distribution. When placed on a solid foundation, columns or pillars can support tremendous loads. The same physical principle applies to DITRA-HEAT-DUO-PS installations. Column-like mortar structures are formed in and between the studs on the surface of the matting. Loads are transferred from the tile covering through these column-like mortar structures to the substrate. Since DITRA-HEAT-DUO-PS is virtually incompressible within the tile assembly, the advantages of uncoupling are achieved without sacrificing point load distribution capabilities.

Alternate Floor Coverings over DITRA-HEAT-DUO-PS. Schluter DITRA-HEAT-DUO-PS is suitable for applications with engineered wood, vinyl, wood plastic composite (WPC), luxury vinyl tiles (LVT), luxury vinyl planks (LVP), stone plastic composite (SPC) tiles and planks, and laminate flooring. See the Alternate Floor Coverings over DITRA-HEAT Technical Bulletin for more information, including requirements and limitations.

Schluter DITRA-HEAT-DUO-PS Features:

• Simply remove the transparent release film from the fleece side of the membrane to expose the layer of adhesive, and embed into substrate
• No thin-set required to install membrane means a faster and easier installation
• The membrane can easily be repositioned until pressure is exerted
• Features sound control and thermal break
• Reduces impact sound transmission through floor-ceiling assemblies, making it ideal for multi-story construction
• Reduces heat loss to the substrate when installed over concrete
• Less mess, less cleanup, and fewer tools required
• Nominal 5/16" (8 mm) thickness minimizes tile assembly thickness and reduces transitions to lower surface coverings
• Self-leveling compounds are not required to encapsulate the cables into the membranes
• Available by the roll or by the sheet to accommodate various room sizes
• If application area requires a membrane that meets or exceeds requirements of ANSI A118.10, please refer to thin-set versions of DITRA-HEAT and DITRA-HEAT-DUO. Alternatively, the DITRA-HEAT-PS or DITRA-HEAT-DUO-PS membranes may be covered with the Schluter KERDI membrane, which is certified to meet ANSI A118.10.

Download DITRA-HEAT Brochure
Download Data Sheet
Download DITRA-HEAT Installation Handbook
Download DITRA-HEAT Calculation Sheet
Download Technical Bulletin DITRA-HEAT with Alternate Floor Coverings