News

Roof membrane or new roof? How to calculate the price

New roofing felt typically costs DKK 700 to DKK 1,200 per m2. A floating roof membrane costs around DKK 215 per m2 in materials. Here is the calculation for a roof of 150 m2, and the cases where yo...

Can you seal an eternit roof?

A worn eternit roof can usually be saved instead of being replaced. Get the asbestos cleared first, and then lay the membrane in one layer on top of the existing roof.

Can you seal the roof in one day?

Ready-mixed, one coat, no torch and no scaffolding. Surface is dry in one to two hours. Here's what a sealing day actually entails, and the two things that can ruin it.

How long does a roof membrane last?

25-year product warranty and up to 40-year lifespan are not two ways of saying the same thing. Here's the difference and what determines how long the membrane will last on your roof.

When in the year can you apply roof membrane?

The question we get most often during late summer is the same every year: can I make it this year, or should I wait until spring? The answer doesn't depend on the calendar, but on three things you ...

White roof membrane: that's why it stays cooler inside

A flat corrugated iron roof in July is not a nice place to stand. The dark surface absorbs the sunlight, and the heat does not stay on the roof. It wanders down through the structure and into the r...

Case: 150 m2 corrugated iron roof in Copenhagen, before and after

Tobias' roof is located on a property in the middle of Copenhagen. The roofing felt was still intact, but the surface was worn gray and there was moss and lichen in the fields around the joints. Th...

Roofing felt or roofing membrane? How to evaluate the two offers

New roofing felt or sealing of the roof you have. The technical difference, what the offers should include, and when a membrane is not the answer.

Is roof membrane fireproof? Broof (t2) explained

What Broof (t2) means, what the test is about, and when you should still have an advisor look at the fire requirements in your project.

Roof membrane: how to choose the best one (5 things to check)

Elasticity, joints, warranty, temperature and application. The five things that determine whether a roof membrane will last, and what you should ask before you buy.