News

Roof membrane on warehouse and commercial roofs: this is how you seal a large flat roof

A large flat roof on a warehouse or commercial building can be sealed without tearing off the old one. This is how you calculate the consumption in pallets, seal skylights and penetrations and choo...

How to prepare the roof for roof membrane and the equipment you need

When is the roof ready for liquid roof membrane? Here's how to check and clean the roof, and here's the equipment that needs to be ready before you get started.

The shed and carport also have a roof to last the winter

The small roofs are forgotten until it drips onto the bikes. The choice is between sealing the old roofing felt cold, laying a new sheet or changing the substrate first.

Chimney leak? How to seal the covering before winter

Water at the chimney is almost always the flashing that escapes. This is how you can see if it is the one, and how you can seal it yourself before winter.

Customer case: Over DKK 250,000 saved on an old eternit roof

An older eternit roof was sealed with a roof membrane instead of being replaced, and the customer saved over DKK 250,000. Here are the roof before and after, and when it makes sense on your own roof.

Roof membrane on flat roof: 7 mistakes you should avoid

Roof membranes only hold if the substrate is clean, the cracks are closed, and the layer is thick enough. Here are the seven mistakes we most often see on flat roofs and how to avoid them.

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.