What is a Warm Roof?
By placing insulation over the top of the roof structure, we form a warm roof.
The makeup of a cold roof is like sleeping on top of your quilt. Everything above the quilt is cold and everything below is warm. With the insulation under the roof covering, the roof is cold, hence the term Cold Roof.
The design process for a new warm roof should take in.
- Can the roof be raised by the height without conflict.
- What vapour barrier should be used.
- What depth of insulation should be used.
- What the chosen roofing membrane will be.
Warm Roof Construction
Warm roofs construction is one of the easiest methods of insulating a roof, because the roof insulation is placed over the roof and not under it its accessibility and ease of laying make it a relatively unskilled job.
A quick inspection by a qualified roofer to make sure all the joints between the insulation has been filled and away you go.
Grants For Warm Roofs
At the moment there are not grants for warm roofs installation however the vat for the installation has been dropped to 5% and if all the works undertaken on the flat roof are substantial then those works are also 5% vat.
How a Warm Flat Roof Works
Installing a Insulation in a Warm Roof
Warm roof construction means taking large quantity of rigid insulation up onto your roof, therefor scaffolding is nearly alway needed for access, and to safeguard the roofers as they conduct their work.
The insulation itself is very safe apart from the dust that is formed when we are cutting it there are now unknown problems with the materials.
The most common rigid roof insulation used on warm roofs is a high performance rigid thermoset polyisocyanurate (PIR) insulation manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
I’ve been working with Steve Dickinson of London Flat Roofing for almost 10 years and to this day I have not come across anyone with more knowledge on London flat roofs. From leak detection to maintenance, Steve has a wealth of knowledge in all aspects of flat roofing.
Our flat roof was previously installed by cowboy builders. Steve did a fantastic job or un-doing their shoddy work and rectifying all of the issues they had caused. No more leaks and no mess either. The price was fair and they got the job done very quickly.
I came back off holiday to find that the flat roof above my kitchen had been leaking and flooded the house. I called and spoke to Steve who came out the same day and within hours he had identified the leak. The very next day he sent out 2 roofers who fixed the leak. Steve then helped me claim through my insurance policy. Very pleased and grateful for his help.
Steve from London Flat Roofing was very knowledgeable. We had several contractors trying to find the issue with our leaking flat roof prior to getting Steve to look at it. After surveying it with a thermal imaging camera Steve was able to pinpoint the exact location of the leak and fixed it there and then. Very pleased and would definitely recommend to others.