The Promat PROMATECT L500 range is a premium collection of A1 non-combustible calcium silicate fire protection boards developed for passive fire protection in commercial, industrial and residential buildings. Manufactured using low-density calcium silicate technology, PROMATECT L500 boards provide outstanding fire resistance, thermal insulation and long-term durability, making them a trusted choice for fire-rated construction projects throughout the UK.

Designed for demanding fire protection applications, Promat PROMATECT L500 boards are widely specified for the construction of fire-resistant ductwork, sheet metal duct cladding, cable enclosures, service risers, service shafts and mechanical service protection systems. Their combination of lightweight construction, excellent insulation properties and high fire performance makes them suitable for both new-build developments and refurbishment projects.

Available in a range of board thicknesses, the PROMATECT L500 range enables contractors and specifiers to select the appropriate board for the required fire resistance period, with tested systems providing 30 to 240 minutes of fire protection depending on the application and system design.

Manufactured from calcium silicate, PROMATECT L500 boards achieve an A1 non-combustible classification to EN 13501-1, helping improve compartmentation and protect critical building services during a fire. Their low thermal conductivity provides effective insulation while maintaining structural integrity under prolonged exposure to high temperatures.

PROMATECT L500 boards are also suitable for installation in humid or damp environments. The boards resist mould growth, insect attack and vermin, while their chemically inert composition offers resistance to dilute acids and alkalis, making them suitable for a wide range of commercial and industrial applications.

Whether you're constructing fire-rated ventilation ducts, protecting electrical services or creating passive fire protection systems, Promat PROMATECT L500 boards deliver reliable performance, straightforward installation and long-term durability.