Thermal Bridging Archives

Cold Flat Roof Construction Explained

Hopefully this video will help explain the difference between cold flat roof construction and warm flat roof construction, this video shows detailed drawings on how a cold flat roof is constructed. I link to two other videos, one on warm flat roof construction and one that’s an in depth comparison between cold and warm flat roofs also showing thermal imaging of poorly performing, insulated flat roofs. The animation program used was Sketch Up with lots of section cuts.

Blog, Thermal Bridging, Videos, Warm Roof Cold Roof

Warm Flat Roof Construction Explained

This video shows detailed drawings on how a warm flat roof is constructed. I link to two other videos, one on cold flat roof construction and one that’s an in depth comparison between cold and warm flat roofs, also showing thermal imaging of poorly performing, insulated flat roofs.

Blog, Flat Roof insulation, Thermal Bridging, Videos, Warm Roof Cold Roof

What Can Happen if You Don’t Get the Vapour Barrier in the Correct Place

One thing’s for sure, all the insulation on the roof will have to come out and we will have to probe the timbers to find out their moisture content before we can even think of re-roofing. We have our suspicions that not only was the vapour barrier not installed correctly on this roof, but the roof was also leaking in places. I will post more videos as the job progresses.

Blog, EPDM Rubber Roofing, Flat Roof insulation, Thermal Bridging, Videos, Warm Roof Cold Roof

Wet Joist Inside A New Flat Roof By London Flat Roofing

This roof is leaking or sweating, so we’ve been asked to make some inspection holes to see if we can determine the cause of the problem. We first noted that the falls on the roof are incorrect and inadequate, as water is puddling. For a 4 year old building, this is not a good sign. One of the things that kills a flat roof is incorrect falls, and that is the case here.

Blog, Flat Roof insulation, Thermal Bridging, Videos, Warm Roof Cold Roof

Water Inside A New Flat Roof Covered With EPDM Rubber

This flat roof is covered with a single ply roofing material and at the moment we don’t know if the roof is leaking or there is a problem with the vapour control barrier, we have to make holes all over the roof to assess the situation before our surveyors can work out what the exact problem may be.

Blog, EPDM Rubber Roofing, Thermal Bridging, Videos, Warm Roof Cold Roof

Replacing An Asphalt Roof With A New EPDM Rubber Flat Roof

Replacement of an old flat asphalt roof using insulation covered with EPDM, a skylight and a new insulated tank box. We had to have a tin roof over the roof for this project, because we knew the roof would be open for longer than a day. The new flat roof will be insulted to the new building regulations. New flat roofs today have to be insulated to a very high standard today.

Asphalt Flat Roofs, Blog, EPDM Rubber Roofing, Flat Roof insulation, Thermal Bridging, Videos, Warm Roof Cold Roof

New Flat Roof Insulation Over An Old Asphalt Roof Then EPDM Rubber

This new flat roof is being laid using Kingspan’s ‘cut to falls’ insulation, then covered using EPDM rubber, single ply as the waterproofing membrane. This roof will carry a 20 year insurance-backed guarantee. New roofs today need to be insulated to a very high standard and the depth of insulation on this roof is very good.

Asphalt Flat Roofs, Blog, EPDM Rubber Roofing, Flat Roof insulation, Thermal Bridging, Videos, Warm Roof Cold Roof