Setting new standards in EWI performance with Wetherby

  • 7 Feb 2019

Wetherby is setting new standards with the launch of the first A1 rated fireproof insulation solution in the UK for building facades.

The vast majority of Mineral Wool systems in the UK achieve an A2 limited-combustible fire rating. The A1 system comprises of non-combustible reinforcing mesh and a non-combustible basecoat to achieve the highest possible European fire classification to the BS EN 13501-1 standard.

The thermal benefit of the system is provided by the Wetherby A1 Stone Wool Insulation which is coated in the purely mineral Wetherby K&A A1 Scrim Adhesive. This is based predominantly on mineral and non-combustible raw material such as quartz, limestone, cement and lime, which ensures perfect adhesion between substrates and insulation board.

In addition, the system is finished with Wetherby Heck ED Mineral Render finishing coat, which is ideal for use with stone wool insulation, providing great breath-ability.

To achieve an A1 rating, the system must be classified to BS EN 13501-1 using the following fire tests:

  • EN 13823 SBI (Single Burning Item) – Used to determine the reaction to fire by exposing a flame to the system finish.
  • BS EN ISO 1716:2010 – Bomb test. Each component of the system is ‘blown up’ to measure heat output (calorific value). All components must be A1.

Contact:

Wetherby Building Systems,
1 Kid Glove Road,
Golborne Enterprise Park,
Golborne,
Greater Manchester,
Cheshire,
United Kingdom
WA3 3GS

Phone: 01942 717100
Fax: 01942 717101

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