Downer-DCS004 - Marco Industries

Following recent events, it’s really important to know the fire standards of the cladding you’re using on buildings. By law, all buildings above 18 metres in height need to have cladding which is fire rated. Most cladding has some sort of protection built in, but only those which are FR should be used on these taller buildings.

These ratings range from an A1 to a D in accordance with European Standards EN-13501-1.

What does A1 and A2 Rated mean?

Class A1 – Products are described as having no contribution to fire at any stage. BS EN 13501 sets several thresholds for combustion performance when tested to both EN ISO 1716 and EN ISO 1182. One of these thresholds is a maximum heat of combustion of 2MJ/kg. Typical products meeting this classification include most inorganic materials such as metal and stone.

Class A2, s3, d2 – Products are described as having no significant contribution to fire at any stage. BS EN 13501 sets several thresholds for combustion when tested to EN ISO 1182, or both EN ISO 1716 and EN 13823. One of these thresholds is a maximum heat of combustion of 3MJ/kg. A typical product meeting this classification is plasterboard.For comparison, Wood has a typical value of 15 MJ/Kg.

Some products use a slightly different fire classification known as the BR 135 standard, set by the BRE (Building Research Establishment). When using a cladding product that is classified using this method, a full classification report must be supplied to prove compliance with BR 135.

For full information on the fire rating of a specific product, get in touch with us. We’d be more than happy to help.

DCS004 SECRET FIX CLADDING

Downer DCS004 Framing System is designed to provide a mechanical secret fix support to most rainscreen cladding panels using the principle of a ventilated façade

DCS004 MSF can be installed onto our DCS031 HELPING HAND®, DCS041 Floor to Floor or DCS021 Omega & Zed system offering design freedom to suit project specific thermal and structural demands and variation in cavity depths.

The horizontal cladding rails are fixed onto the vertical sub-frame and should align with DCS004 Hangers fitted to the rear face of the panel.

DCS004 Horizontal Carrier Rails (HCR) are supplied in 3.0 and/or 6.0m lengths. Generally, these are installed in max. 3m lengths and cut to suit project specific detailing (fire barriers, building movement joints, etc).

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