Is roof membrane fireproof? Broof (t2) explained
Fire is the question that most often stops a roof renovation, and it is a fair question. When you put a new layer on the roof, you change how the roof behaves if sparks land on it. Here's what the rules say and how Luna Roof is classified.
Broof (t2): the classification to look for
In Denmark and the rest of the EU, fire resistance is assessed from the outside according to the standard EN 13501-5. The classification is called Broof, and the letter in brackets tells which test method has been used. In Denmark it is Broof (t2) that applies.
The test involves placing a burning wooden basket on a roof sample, adding wind, and measuring how far the fire spreads and whether burning material drips down. If the roof passes, it is approved for general construction without special distance requirements for separation.
Luna Roof roof membrane is classified Broof (t2). It is also on the data sheet together with the CE marking according to EN 1504-2 and ETAG 005.
What does this mean in practice?
This means that the membrane can be used on ordinary roofs on homes, garages, carports, summer houses, warehouses and commercial buildings, without you having to apply for a dispensation or keep an extra distance from neighbors.
This does not mean that the material is non-combustible. No bitumen or polymer-based roofing is non-combustible. Broof (t2) is about the fire not spreading and not dripping further. This is what the building regulations require.
Sparks from wood-burning stoves, grills and fireworks
The classic scenario is a spark from the chimney or a New Year's rocket landing on the roof. This is exactly the situation the Broof test is built to mimic, with embers and wind at the same time.
A roof that is sealed with Luna Roof behaves here like a regular approved roof coating. There is no additional risk from having laid the membrane on, and because the surface is seamless, there are no loose edges and overlays where embers can get stuck.
When should you ask a counselor anyway?
There are situations where the fire requirement is stricter, and where you must have it checked in the specific project:
- Buildings located close to neighboring buildings
- Combined terraced houses where there is a requirement for a fire comb or fire sectioning
- Industrial and warehouse buildings above a certain size
- Buildings with special requirements, for example institutions and meeting rooms
In those cases, it is not the membrane alone that decides the matter, but the entire roof structure including insulation and underlay. Ask your adviser or the municipality's building department.
Temperature is not the same as fire
Two numbers are often mixed up. Luna Roof is tested to function from -40 °C to +90 °C. It is the operating temperature, i.e. what the membrane can last year after year without becoming brittle or soft.
Fire resistance is something completely different and is measured in the test that gives Broof (t2). When someone provides a degree number in connection with fire, always ask for the test report itself. A loose number without a standard behind it does not say anything about what the roof may be used for.
The documentation
If you need the papers for a construction case or for an insurance company, write to us. Then we send the CE declaration, data sheet and fire classification.
Contact us here, or call if it is urgent.
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