Envirotect Floor Cassette Membrane (FZT)

Envirotect FZT is a vapour open, airtight floor protection membrane designed to maintain airtightness between ground floor and first floor intermediate floor zones. Envirotect FZT is vapour open diminishing the risk of interstitial condensation whilst providing superior levels of airtightness at the essential junctions between floor and wall. Envirotect FZT delivers superior vapour permeability reducing the risk of interstitial condensation in the floor zone area. Envirotect FZT provides further significant benefits in airtightness, water resistance providing three products in one application. Envirotect FZT is a simple solution to airtightness.


Suitable Envirotect FZT Floor Cassette Membrane Applications:

  • Unsealed Floor Zone

Roll Sizes:

  • 1.0 x 50m
  • 1.5 x 50m

For more information about this product, please speak to your local Galaxy Branch. For latest datasheets, please refer to manufacturers website.


  • Effective condensation control and airtightness within floor construction.
  • Flexible and easy to install
  • Meet and exceeds waterproofing requirements in BS EN13589 – 2:2014 (W2)
  • 3 times more permeable than NHBC & BM Trada requirements
  • Prevents water ingress to the structure
  • Provides comprehensive waterproofing barrier to the sheathing during construction phase

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