A2 Class non-combustible, vapour permeable, breathable membrane

FIREFLY™ MEMBRANE WP is a non-combustible, fire resistant membrane that achieves Class A2 (EN13501-1). Vapour permeable and suitable for use as a lining within ventilated façade systems, including applications above 18 metres.

Construction

FIREFLY™ MEMBRANE WP is a strong, breathable woven glass substrate aluminised on one side, suitable for jointing with foil tape.

Key Benefits

Weatherproof and breathable, Firefly Membrane WP is designed to be a vapour permeable, reflective insulation layer in commercial facades and rain screen cladding systems

Classified A2 (EN13501-1), suitable for use over 18m – combining non-combustible fire resistance with traditional construction membrane performance requirements

Ideal for upgrading fire performance both on remedial work and new installations of cladding and rain screen systems

Outstanding strength and durability both before and after age testing, demonstrating sustainable performance attributes when weathered

Lightweight, flexible, simple to install and resistant to damage during installation at temperatures as low as -40°C

Jointed by foil tape

Description        

Aluminised woven glass/aluminium breathable membrane

Reaction to fire

EN 13501-1:2018, A2, S1 d0

Non-combustible, No significant contribution to fire at any stage of the fire

Flame Propagation         

BS476 Part 6 & 7 Class 0

Resistance to water penetration               

EN 13111

Pass - W3 (pre-ageing)

Pass - W3 (post-ageing)

Water Vapour Diffusion  
              
EN ISO 12572 Sdc (m)

0.02m silver face, 0.03m reverse

Tensile Strength    
          
EN 12311-1 (modified by EN 13859-1, EN 13859-2)

MD >2200 N/50mm (pre-ageing) MD >2200 N/50mm (post-ageing)

CD >1800 N/50mm (pre-ageing) CD >1800 N/50mm (post ageing)

Elongation

EN 12311-1 (modified by EN 13859-1, EN 13859-2)

MD 4% (pre-ageing) MD 4% (post-ageing)

CD 4% (pre-ageing) CD 3% (post ageing)

Tearing Resistance

(NAIL SHANK)    EN 12310-1 (modified by EN 13859-1, EN 13859-2) >200 N

Dimensional Stability     

EN 1107-2 (% change) MD 0.01 %, CD 0.0 %

Flexibility At Low Temperature

EN 1109 No cracking at -40°C

Dimensions & Packaging
             
Width: 125cm

Thickness: 0.2mm

Roll Length: 50m

Roll Area: 62.5m2

Weight: 225g/m2, 14kg per roll nominal

All Firefly™ cavity barrier 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.

Product Data Sheets
Data Sheet
Firefly Product Summary

All orders are usually despatched within 24 hours of receiving cleared payment (Mon–Fri).

The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.