Promat Masterboard non combustable building board Promat Fire Protection

Promat Masterboard

High performance non combustable calcium silicate building board.

Suitable for use in a number of applications including internal walls and roofs, as well as semi-exposed soffit linings and swimming pool ceilings.

Fire Reaction Class: A1 Non Combustible EN13501-1.

Up to 30 minutes fire resistance subject to system and application.

Resistant to the effects of moisture and will not physically deteriorate when used in damp or humid conditions.

Formulated without inorganic fibres; does not contain formaldehyde.

BBA Agrément Certificate No. 18/5593

Thicknesses and Availability:

Available in most popular thicknesses at some of our larger depots; short lead-times and minimum order levels may apply if we need to get stock in before delivering to site.

This masterboard Range includes the following product thicknesses: 6mm, 9mm, and 12mm.

Product Information

General information about Promat Masterboard

Product Application

General application non combustable building board

Promat's high performance non combustable building board, Masterboard, is suitable for use in internal wall and roof applications as well as semi-exposed soffits and swimming pools.

Product Make-up


Promat Masterboard is a non combustable calcium silicate board reinforced with cement, cellulose fibers, quartz and mineral fillers.

Product Properties

Thickness 6mm to 12mm
Board Length 2.44m
Board Width 1.22m
Board Edge Square

Product Prices

Buy Promat Masterboard

Priced on Application: Please contact us with your requirements, so we can check availability, lead times and costs.

Limited stock of the most popular boards sizes may be held at some of our larger depots.

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

Thermal Conductivity 0.22 W/mK
Compressive Strength 9.3 N/mm²
Reaction to Fire A1, non combustable BS EN:13501-1
Nominal Density 975 kg/m³
Product Thickness Thermal Resistance kg/m²
Masterboard 6mm 6mm 0.03 m²K/W 5.85 kg/m²
Masterboard 9mm 9mm 0.04 m²K/W 8.77 kg/m²
Masterboard 12mm 12mm 0.05 m²K/W 11.7 kg/m²

Product Certificates

Please visit the Promat website for product certificates.