FireBlock PV Membrane
Flat Roof - Under Waterproofing
FireBlock Roof Membrane - Flat Roof Under Waterproofing is a built-in fire protection layer for new flat roofs. Installed between insulation and waterproofing, it becomes part of the roof structure without changing construction methods.
During a solar panel fire, the membrane expands under heat, forming an insulating barrier that protects insulation, vapor layers, and structure maintaining roof integrity and meeting fire safety codes.
Active Expansion
When exposed to extreme heat, the membrane rapidly expands to form an insulating barrier layer. This reaction is triggered by intumescent technology built into the material.
Thermal Shielding
The expansion creates a dense, heat-resistant barrier that prevents flames, radiant heat, and hot gases from reaching the insulation and structural layers below.
Roof Preservation
By blocking thermal transfer, the membrane helps maintain the integrity of the roof deck, preventing ignition of combustible materials and structural collapse.
Fre Safety Layer
Bridgehill FireBlock Membrane functions as a fire safety layer, protecting roof structures from wildfire heat and wind-driven embers.
Bridgehill FireBlock Products
Wondering how FireBlock works, where it fits in the roof, or what it protects?
Below you’ll find clear answers to common questions about fire safety, installation, and performance for both new builds and retrofits with rooftop solar.
FireBlock Solar PV Membrane is a fire-resistant roof membrane designed to prevent fire from spreading from solar panel installations into the underlying roof structure.
It blocks flames, radiant heat, and hot gases from solar panel fires, protecting combustible insulation and structural elements in the roof.
FireBlock can be installed either above or below the waterproofing membrane, as well as on battens or sheeted roofs, depending on roof type and project requirements.
When exposed to extreme heat, the membrane expands and forms an insulating, intumescent barrier that prevents heat and flames from penetrating the roof assembly.
Yes. FireBlock has been tested in full-scale photovoltaic fire scenarios, demonstrating very low heat transfer to underlying insulation even during prolonged fire exposure.
Yes. The membrane is suitable for flat roofs, low-slope roofs, and pitched roofs.
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