1879 Whitehaven Rd. Suite 144

Grand Island, NY 14072

+ 1(800)-686-9158


DemoFlex TMS: Underlayment Set

The DemoFlex TMS: Underlayment Set consists of DemoFlex TMS Membrane Underlayment in either: 40″x90′ (300SF), 20″x90′ (150SF) and 12″x100′ (100SF) rolls, along with the corresponding DemoFlex Adhesive Spray Can and Seam Tape included.



Heavy Traffic Classifications in ASTM C627 Robinson testing proves its suitability for commercial & residential use. The ANSI A118.12.5.4 standards for High Performance Crack-Isolation Classifications add value to the life of the floor along with the membranes passing ANSI Hydrostatic Pressure testing by the TCNA. DemoFlex TMS requires the use of DemoFlex Adhesive which can be sold separately.

By encapsulating the mortar between the tile & membrane along with allowing the tiles to be removed in full pieces with no mortar left to grind,certified exposure testing completed utilizing DemoFlex reported that the exposure was so far below the Permissible Exposure Limit (PEL) 25 µg/m3 standard set by OSHA-1926.1153 that it was classified as “non-detectable” which is the lowest reportable level of exposure.


From a standing position, spray the DemoFlex Adhesive onto the existing substrate/concrete, wait 20-40 minutes for the adhesive to activate, thoroughly press the DemoFlex TMS into the DemoFlex Adhesive then it is immediately ready to set the Mortar, Tile and Grout directly on top of our membrane following industry standards.

It is recommended to treat the seams & perimeter with DemoFlex Tape (included) or with a high quality silicone caulk.




SKU: 015 Category:

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Additional information

Additional information

Weight 10 lbs
Dimensions 20 × 10 × 15 in