VoidFormer

Class A1

12.7mm Promatect‑MST Fire‑Resistant Calcium Silicate Board – 240 Min

12.7mm Promatect‑MST Fire‑Resistant Calcium Silicate Board – 240 Min

12.7mm Promatect®-MST is a versatile, lightweight calcium silicate board offering precise machinabil..

£592.99 Ex VAT: £494.16

20mm Promatect‑MST High‑Strength 240 Min Fire‑Resistant A1 Board

20mm Promatect‑MST High‑Strength 240 Min Fire‑Resistant A1 Board

20mm Promatect®-MST is a medium-weight board delivering low thermal conductivity, high compressive s..

£703.26 Ex VAT: £586.05

25mm Promatect‑MST Structural Fire Protection Board 240 Min Fire Rating

25mm Promatect‑MST Structural Fire Protection Board 240 Min Fire Rating

25mm Promat Promatect®-MST is a robust, structural-grade board with enhanced thickness for demanding..

£782.29 Ex VAT: £651.91

30mm Promatect‑MST Fire Protection Board – A1 Non‑Combustible 4‑Hour

30mm Promatect‑MST Fire Protection Board – A1 Non‑Combustible 4‑Hour

30mm Promat High-Spec Promatect®-MST is a heavy-duty board designed for high-temperature, heavy-load..

£738.02 Ex VAT: £615.02

40mm Promatect®‑MST Calcium Silicate Board – Industrial Fire Protection

40mm Promatect®‑MST Calcium Silicate Board – Industrial Fire Protection

40mm Promatect®-MST is a premium-grade insulation board offering excellent fire resistance, moisture..

£1,006.44 Ex VAT: £838.70

50mm Promatect®‑MST Calcium Silicate Fireboard – 240 Min 1000 °C Resistance

50mm Promatect®‑MST Calcium Silicate Fireboard – 240 Min 1000 °C Resistance

50mm Promat Promatect®-MST is an extra-heavy fire board combining exceptional fire performance and i..

£1,383.13 Ex VAT: £1,152.61

60mm Promatect‑MST Heavy‑Duty Board Fire Insulation 4‑Hour Fire Rating

60mm Promatect‑MST Heavy‑Duty Board Fire Insulation 4‑Hour Fire Rating

60mm Promat Promatect®-MST is the maximum-thickness fire board, delivering top-tier protection and i..

£1,328.69 Ex VAT: £1,107.24

CLASS A1    


Fire Classification (A1) in construction and insulation materials refers to the highest level of fire resistance in the Euroclass system (EN 13501-1). Materials classified as A1 are non-combustible and do not contribute to a fire at any stage, making them the safest option to choose.

The Euroclass system (EN 13501-1) is the European standard created for testing and classifying building materials based on their reaction to fire. It helps to clearly distinguish non-combustible products from combustible ones.


WHAT DOES A1 MEAN?


Materials classified as A1 are non-combustible, meaning they:

  • Do not ignite or contribute to a fire at any stage.
  • Do not produce smoke or flaming droplets, which are major hazards in fires.
  • Are the safest option for fire prevention in construction.


 EXAMPLES OF A1 MATERIALS

Many mineral-based and inorganic materials achieve an A1 rating, such as:

  • Stone wool insulation 
  • Calcium silicate board
  • Glass wool insulation
  • Concrete
  • Brick
  • Ceramic tiles


WHERE IS A1 USED?


Because of their non-combustible nature, A1-rated materials are often used in:

  • Fireplaces
  • External and internal walls
  • Shaftwall
  • Internal partitions 
  • Protected zones
  • Roof insulation
  • Structural components of buildings
  • Fire barriers and fireproof cladding


It is important to regularly check the current regulations and contact the manufacturers of  A1 materials for the most up-to-date information. a1firerated.co.uk is not responsible for any inaccuracies or outdated information provided here.