Firefly™ Membrane NB

Firefly Membrane


FIREFLY MEMBRANE NB is a premium quality and fire resistant non breathable membrane. Made from a strong, durable woven glass substrate laminated to aluminium foil, FIREFLY MEMBRANE NB is a non-breathable, weatherproof barrier with excellent mechanical properties designed to be an impermeable water barrier or reflective insulation layer in commercial wall applications.

FIREFLY™ MEMBRANE NB meets EN 13501-1 (Class A2), for non-combustibility and BS 476 parts 6&7 for resistance to spread of flame.

FIREFLY™ MEMBRANE NB is lightweight, extremely strong, durable and easy to install. (Note: joins between membrane layers should be sealed with FIREFLY™ Foil Tape.


DESCRIPTION  Durable woven glass substrate laminated to aluminium foil
PRODUCT CODE  EKA161/1.25/50
COMBUSTIBILITY  EN 13501-1:2018, A2-S1, d0
BS476-6:1989 + A1 2009, Class 0
DIMENSIONS  1.25m x 50m roll (62.5m2) 
WEIGHT  Nominal 14Kg per roll 
THICKNESS  Nominal 0.2mm 
OTHER PROPERTIES      Further information describing physical properties can be made available on request.
INSTALLATION  FIREFLY™ MEMBRANE NB is not designed to withstand prolonged exposure to the elements. FIREFLY™ MEMBRANE NB is a durable material but care should be taken to ensure it is not damaged during storage or installation. General installation advice is available on request.
FIREFLY™  All FIREFLY™ products must be installed in compliance with the FIREFLY™ Installation Guide, which is provided upon request. Deviation from these drawings should not be carried out without written authority from the FIREFLY™ Technical Department.
All figures quoted are nominal, believed to be true at the time of printing and are presented without guarantee. It is up to the user to determine the suitability of use. 


This product can be specified using NBS