The Fire performance of a roof construction is determined using either BS476-3 or test 4 method as described in CEN TS 1187 and classified according to BS EN 13501-5.

 

Sika Liquid Plastics products perform in accordance BS476-3 achieving classifications of;

  • Broof(t1) Class E
  • Broof(t4) EXT.F.AA
  • Broof(t4) EXT.F.AB
  • Broof(t4) EXT.F.AC

 

The building regulations define the acceptable areas of use for roofs with various fire ratings by means of type of building, size and distance from the site boundary. Ratings AA, AB and AC have unrestricted use.

 

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