Fire Rating of Acrylic
Cast PMMA (Acrylic) is classed
- Classification E, according to the "EURO-Norm" (DIN EN SO 11925:2:2002-07) . Find the test report here (German only).
- B2, with no burning droplets, according to DIN 4102 (Germany)
- M4 (no droplets) according to NF 92500+ (France).
- The Results of tests for fire propagation when tested to BS 476 Part 7 confirm that acrylic glazing achieves a Class 3 classification (U.K.).
- This material can thus be classified Category TP(b) according to BS 2782, Method 508 A for thermoplastics material as defined by the Building Regulations.(U.K.)
Both cast and extruded Acrylic burn more or less like hardwood; very little smoke generation. Its combustion gases are non-toxic and non-corrosive.
It is strongly dependent on the individual country’s fire regulations if acrylic can be used in buildings as walls, roofs or ground. The use of acrylic outside a building as facade elements or part of the storefront is less critical. We recommend to work on an individual solution with your local authorities for your specific project.
Use as Water Barrier
Acrylic used as underwater windows has shown to be accepted by many countries regulators. No national or international regulatory work is known by us, to support Hydrosights experience. However all our projects have been accepted under various circumstances in many nations.
Acrylic compared to Safety Glazing
Safety glazing consists of several glass sheets laminated together by interlayers. The fire rating for laminated glass is usually B2