01 02 03 04 05 06 01 02 03 04
Bridgehill®
FireBlock Membrane

Pitched Roof - Above Roofing

Bridgehill FireBlock Solar PV Membrane

FireBlock for Pitched Roof - Above Roofing is designed for retrofit solar installations. Installed on top of existing waterproofing and beneath PV panels, it requires no changes to the original roof.
In a fire, the membrane expands under heat to block flames and radiant heat, protecting insulation, timber, and structure.
It offers reliable fire protection without demolition or roof upgrades — quick to install and ideal for retrofitting pitched roofs with solar.

Size
1,15 m x 30 m | 3,77 ft x 98.43 ft
Weight
35 kg | 77.16 lbs
Peak temperature
± 1600 °C | 2912 °F
Working Temperature
± 800 °C | 1472 °F
Core material
Silica, Alumina, Calcium oxide, and Boron oxide
Coating
Bridgetech™ Polymer Coating
Usage
Roof fire barrier membrane designed to prevent fire spread
Rating
Classification report for roof covering exposed to external fire according to EN 13501-5: Broof (t2)
FireBlock Product Sheet

A new standard

Optimized for contractors and building owners, this solution addresses the most common challenges in solar retrofitting
Universal Compatibility
Engineered for versatility, the membrane is fully compatible with major roofing types, including bitumen, foil membranes, and asphalt-based surfaces.
See all
Membrane Material 2
Maintains Structural Integrity & Cost Efficient
The installation process preserves the roof’s original waterproofing capabilities and does not negatively impact its load-bearing capacity. Drastically reduces project costs and construction timelines. There is no need to remove existing roofing or install an additional 50mm layer of non-combustible insulation, saving significant labor and material resources.
Frequently Asked Questions

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.

What is FireBlock Solar PV Membrane?

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.

What problem does FireBlock solve?

It blocks flames, radiant heat, and hot gases from solar panel fires, protecting combustible insulation and structural elements in the roof.

Where is FireBlock installed in the roof build-up?

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.

How does FireBlock work during a fire?

When exposed to extreme heat, the membrane expands and forms an insulating, intumescent barrier that prevents heat and flames from penetrating the roof assembly.

Is FireBlock tested in full-scale fire scenarios?

Yes. FireBlock has been tested in full-scale photovoltaic fire scenarios, demonstrating very low heat transfer to underlying insulation even during prolonged fire exposure.

Can FireBlock be used on both flat and pitched roofs?

Yes. The membrane is suitable for flat roofs, low-slope roofs, and pitched roofs.

Does FireBlock affect solar panel performance?

FireBlock does not negatively affect solar performance. In some configurations, it may support improved yield when used with bifacial panels.

Is FireBlock compatible with PIR and EPS insulation?

Yes. FireBlock has been tested and verified on both PIR and EPS insulation systems.

What standards and certifications does FireBlock comply with?

FireBlock is developed for compliance with EN 13501-5 (BROOF(t2)), and ICC evaluation approval for the US market.

Technologi
Technology
How it works
Intumescent Technology for Maximum Heat Blockage: The Bridgehill Fire Roof Membrane is to act as a self-sufficient safety layer. In the event of a thermal runaway or fire originating from the solar panels, the membrane utilizes advanced intumescent properties.
Learn More

Active Expansion

Upon contact with extreme heat, the material significantly expands.

Thermal Shielding 

This expansion creates a robust block that prevents heat transfer to the underlying insulation.

Roof Preservation 

By neutralizing the heat transfer, the existing roof structure remains intact, preventing the fire from penetrating the building envelope.

Legge inn et punkt til

Bridgehill FireBlock Products

Fireblock Membrane Bridgehill FireBlock Solar PV Membrane
Fireblock Membrane
FireBlock is a fire-resistant sandwich membrane with a multi-layer construction and a FireBlock core technology. The core is engineered to react to high thermal exposure while the outer layers provide mechanical stability and compatibility with standard roofing systems.
DOCUMENTS
Adhesives And Tapes Material 2
Adhesives And Tapes
High-temperature-resistant adhesives and tapes are used to bond seams and overlaps, ensuring system continuity under fire conditions. The products retain adhesion and sealing performance at elevated temperatures, eliminating the need for mechanical fasteners.
DATA SHEET
Soap Material 2
Soap
The installation soap is a surface preparation and installation aid that removes grease and contaminants to achieve consistent adhesion. The product is environmentally friendly and non-toxic, posing no risk to the surrounding environment.
DATA SHEET

Related articles

See All
Bridgehill Achieves ISO 9001 And 14001 December 2025
Updates
We are proud to announce that Bridgehill’s management system is now certified according to ISO 9001 and ISO 14001, a significant milestone in our ongoing commitment to quality, sustainability, and continuous improvement.
Bridgehill FireBlock Membrane_Albedo effect
FireBlock
The albedo effect refers to the ability of a surface to reflect sunlight. For bifacial solar panels, which generate energy from both the front and back sides, this reflectivity can significantly impact performance. By increasing the amount of light reflected onto the rear side of the PV modules, high-albedo surfaces can boost total energy output especially during summer months when solar exposure is highest.
Green1
At Bridgehill, we want to share the key aspects of this regulation and highlight how our solutions support a safe and sustainable transition.
Frank 6
Meet Thor Brubakken
Thor brings a strong engineering background and broad experience across renewable energy and fire‑safety technologies. He has held leadership roles in solar‑ and building‑systems firms. At Bridgehill, he leads the development of advanced containment solutions™, driving high‑performance product architecture, scalability, and integration with global energy installations.
Contact Thor