London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
A lot customers have never heard of Part L of the Building Regulations and I find myself explaining these regulations all the time, so I have uploaded this video and hope that it helps anybody looking to find out more. Part L and flat roofing are becoming more and more tied together. We always try to form a warm roof for our flat roofs, we find that a warm roof construction for flat roofing is by far the best flat roof.
Kemper is a liquid flat roofing membrane, it is not an EPDM rubber liquid. Kemper is a liquid resin that’s impregnated into a fleece fabric to give it depth and strength. As it’s a liquid flat roofing material it is easily applied to roofs with lots of detail on them. If we were to use a sheet roofing material e.g., sheet EPDM rubber, we would have to cut and patch the rubber in lots of different places, thus taking away the properties of using sheet materials.
What is a warm roof? What is a cold roof? In this video I show a warm roof construction on a flat roof that has gone wrong, I show how a warm flat roof should be built and how a cold flat roof should be built. The term “Warm Roof” acutely refers to the space under the roof insulation and not the roof itself. The same applies to the term “Cold Roof”.
Liquid rubber being laid over ply and felt. If you watched video 1 you would have seen the felt being fixed to the ply now you can see the liquid rubber being laid onto the ply and over the green mineral felt, the next video shows me ripping all the felt off the ply also shows the liquid rubber being stretched and taken of the ply.
This flat roof has been covered with a single ply flat roofing membrane. It’s a TPO and not an EPDM single ply. The water tank on the flat roof is in a unbelievably bad state of repair; the lid to the water tank has rotted away and is falling into the tank so the water must be compromised!
This shows what can happen if the roofers are not trained in the flat roof material they are laying. The roofing market is now being flooded with good flat roofing materials, however if the roofer laying your new flat roof is not trained correctly the roof will not last.
Ply decking with torch on felt being applied over the top, ready for liquid rubber coating. When dry, I remove the liquid rubber and the mineral felt from the ply decking, showing how good the bond of the rubber is to the ply and the mineral felt.
Liquid rubber being laid over ply and felt. If you have watched video 1, you would have seen the felt being fixed to the ply, now you can see the liquid rubber being laid onto the ply and over the green mineral felt. The next video shows me ripping all the felt off the ply and also shows the liquid rubber being stretched and taken off the ply.
What is EPDM Rubber? Good question – I’m asked this all the time! EPDM is a manmade rubber that we use for all sorts of things around the house and in automobiles. However we also use EPDM on flat roofs and these EPDM rubber flat roof coverings have been used to cover roofs all over the USA for years.
The Kemper system is laid wet into a fleece, as you can see we’ve even covered the internal surfaces of the parapet walls on this job. By doing so we remove the need to use flashings, and the flashing details are normally what go wrong on a roof as it’s approaching the end of its lifespan.