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Fireshield

Fireshield® is a vapour permeable walling underlay with an intumescent coated surface. Fireshield is suitable for all walling applications including those in multiple storey buildings. The intumescent coating helps protect the substrate by reducing the risk of fire taking hold and significantly reduces the formation of droplets and smoke. It is installed and fixed to the substrate in the same manner as standard breather membranes using mechanical fixings.

  • The unique intumescent coating helps protect the substrate
  • Vapour permeable walling underlay for use either directly onto sheathing or insulation
  • Class B, s1-d0 but performs differently to other similar class products
  • Complies with BS5250, BS4016 & NHBC requirements for vapour permeable walling underlays
  • Ideal for use in rainscreen / façade construction
  • Suitable for applications over 18m high
  • BBA & LABSS Certified

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Material Properties

Fireshield

Property Test Method Result
Roll Size - 1.1 x 20 m
Weight EN 1849-2 737 gsm
Thickness EN 1849-2 1.2 mm
Nail Tear Resistance - MD EN 12310-1 273 N
Nail Tear Resistance - CD EN 12310-1 330 N
Resistance to Water Penetration EN 13859-1 W1 Class
Tensile Strength - MD EN 12311-1 300 N/50mm
Tensile Strength - CD EN 12311-1 275 N/50mm
Elongation - MD EN 12311-1 2 to 3 %
Elongation - CD EN 12311-1 2 to 3 %
Water impermeability EN 20811 ≥2 m
UV Resistance EN 13859-1 12 months
Water Vapour Resistance Sd EN ISO 12572 Condition C 0.08 m
Flexibility at low temperatures EN 1109 -20 °C
Reaction to Fire EN 13501-1 (Methods EN 11925-2 and EN 13823) B-s1, d0 Class
Resistance to Air Penetration EN 12114 ≤1 m3/m2/hr  @  50Pa

UK Availability

North East Scotland & Islands
Linda Kay
Regional Sales Manager

07817872980

Ireland
Sam Swindell
Regional Sales Manager

07875656305

Midlands
Adam Salt
Regional Sales Manager

07817873124

South London & South East
Josephine Matchette
Regional Sales Manager

07535450346

Wales & South West
Marc Blackie
Technical / Regional Sales Manager

07968215 755

North London & East England
Ben Cremer
Technical / Regional Sales Manager

07768817733

Global Availability

North America
Jeff Dibdin
International Account Manager.

07534436615

South America
Jeff Dibdin
International Account Manager.

07534436615

Europe
Jeff Dibdin
International Account Manager.

07534436615

MENA
Jeff Dibdin
International Account Manager.

07534436615

Asia
Jeff Dibdin
International Account Manager.

07534436615

Australia
Jeff Dibdin
International Account Manager.

07534436615


Fireshield® Comparison Test

0 seconds

Fireshield (right) and a competing fire retardant membrane (left) are fixed to a 10mm OSB panel with staples. A butane torch is positioned approx. 10cm from the face of the membranes at a 45 degree angle. Two cameras capture the view from front and back.

After 1 second

Immediately after the butane torch fires, the competing membrane begins to melt and shrink away from the heat source, exposing the OSB. There is no physical change to Fireshield.

After 1 minute

On the left side, the competing membrane retreats further from the flame and the OSB begins to burn. On the right side, the flame has caused Fireshield’s intumescent surface to react and ‘puff up’ which protects the membrane and the OSB.

After 6 minutes, 30 seconds

The reverse-side of the OSB on the left begins to discolour and smoke as the flame penetrates the OSB under the competing membrane. Fireshield’s fire-proof surface continues to intumesce in response to the fire. No discolouration or smoke on the reverse-side of the OSB on the right is observed.

After 11 minutes, 35 seconds

The OSB panel under the competing membrane on the left is breached by fire, and flames appear on the reverseside. Fireshield continues to puff-up. No discolouration or smoke on the reverse-side of the OSB on the right is observed.

After 20 minutes

The competing membrane exposed the OSB directly to fire from the outset and, as a result, the OSB burned completely through before the test was over. The torch over Fireshield was left on for a full 20 minutes. Even though the membrane itself did not catch fire during that time, the front-side of the OSB panel only received minor scorch marks and did not ignite.


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