News

Roof membrane on flat roof: 7 mistakes you should avoid

Tagmembran holder kun, hvis underlaget er rent, revnerne er lukket, og laget er tykt nok. Her er de syv fejl, vi oftest ser på flade tage, og hvordan du undgår dem.

Does a white roof stay white?

Doesn't a white roof just get dirty after a winter? Here's what actually happens to the color, why dirt has a hard time sticking to a seamless membrane, and what an hour with a garden hose does.

How much roofing membrane do you need?

The question we get most often is not whether the membrane will last. It's how many buckets are needed. Here's the math, and where people typically miscalculate. Basic arithmetic A 20 kg bucket co...

Get your flat roof ready for autumn

Autumn is when a flat roof is revealed. The rain falls for hours, leaves settle in the gutters, and the joints that just made it through the summer suddenly have standing water on them for days. Yo...

Leaky roof? How to find the hole and seal it

The stain in the ceiling is almost never right under the hole. The five places a flat roof most often leaks, how to find the leak with a garden hose, and when a patch isn't enough.

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 ...