Waterproofing and Multifunctional Underlayment Systems


The Blanke•PERMAT is an innovative uncoupling underlayment that offers all the labor saving benefits of the old plastic roll systems. The Blanke•PERMAT also adds support to wood substrates thereby reducing deflection and provides greater compression and tensile strength than plastic roll products. The Blanke•PERMAT is stable to walk on during installation and does not require additional curing time when installing porcelain with latex modified thinset.

Why Blanke•PERMAT?

For stone tile installations, Blanke•PERMAT offers amazing crack isolation protection, superior compression and tensile strength. The Blanke•PERMAT reinforced mesh panel design adds major support to wood subfloors, greatly reducing vertical subfloor movement (deflection). And in many cases, using Blanke•PERMAT actually replaces the need for a second layer of plywood to reinforce a floor to be tiled with stone! That means there is no significant increase in the height of the stone installation if Blanke•PERMAT is used!

10 Year Warranty
Importantly, Blanke•PERMAT has a 10-year warranty against damage caused by excessive vertical subfloor movement (deflection), the only such warranty in the industry. Whether installing stone on wood or cement subfloors, homeowners who include Blanke•PERMAT in their stone tile installations can rest assured their subfloors will indeed support  the installation.


  • Reinforces wood substrates
  • Only one layer of 3/4" plywood required under most natural stone installations
  • Provides uncoupling / crack isolation protection on cement substrates
  • Only 1/8" thick - minimize transition height particularly to wood laminate floors
  • 50 % higher compression strength and 7 x greater tensile strength than rolled uncoupling products

Minimize Transition Heights With Blanke•PERMAT

Blanke•PERMAT installation with no increase in height of stone installation!

With Blanke•PERMAT
With Blanke•PERMAT

Without Blanke•PERMAT:

Traditional installation (rolled uncoupling mat / cement board) with a significant increase in height of the stone stile and the adjoining wood flooring.

Installation with rolled uncoupling mat
Installation with rolled uncoupling mat
Installation with cement board
Installation with cement board

Quick Reference – Residential Projects

  • Reduces deflection in wood substrates (i.e. 24 o.c. joist spacing)
  • Stone installations – Increases substrate support
  • Large format tile – provides flatter plane and stiffer substrates
  • Only 1/8” thick
  • Suitable for all size tiles including mosaics
  • Weighs only 1.06 lbs. per panel (6.5 sq.ft)
  • Latex modified thinset recommended for porcelain tile installation

Quick Reference – Commercial Projects

  • Crack isolation/uncoupling protection
  • Superior point load support
  • Suitable for tiles under 2” x 2”
  • Higher compression strength
  • Higher shear strength
  • Easier to install
  • Ideal for floors exposed to heavy traffic (auto showrooms, airports,
  • retail, nursing homes, hospitality)

Suitable Subfloors / Natural Stone

Click for enlargement please.

Technical Data

Top Mesh: Extruded twisted strands of highly alkali resistant glass fiber heat welded to the lower layer of highdensity polyethylene (HDPE) mesh.
Bottom Mesh: Extruded twisted strands of
alkali resistant HDPE
Fabric material: Polypropylene fleece
Thickness: Approx. 3.3 mm (nominal 1/8 inch)
Size: 1 panel: 2’ x 3.2’ (6.5 sq.ft.)
30 panels/carton (195 sq.ft.)

Floors Interior

Plywood or OSB Subfloors:
Joists spaced 16” o.c. and 19.2” o.c.: Minimum one layer 3/4” thick subfloor.
Joists spaced 24” o.c.: Minimum 3/4” thick subfloor plus second layer of 3/8” thick plywood or OSB.

Cement Subfloors:
Blanke•PERMAT provides excellent protection against damage caused by stress cracks and lateral movement typically found in cement substrates.

NEW: The Advantages Of PERMAT!