London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
This gives an idea as to what we were up against. Our specification for this new flat roof was to strip the old roof, apply insulation and re-roof using EPDM rubber. Just what we were going to do with the parapet walls and chimneys was always going to be up for debate and, as part of the pricing, we had discussed that a Provisional Costs (PC) sum should be put to one side to deal with the renovation of this area.
In this video I explain problems with insulating a roof using the warm and cold roof construction methods. Whatever new flat roof covering you choose, e.g. EPDM rubber, Kemper, Liquid Rubber Triflex, if the specification of the insulation is not correct you could have problems which could include rotting joists.
New flat roofs using the warm and cold flat roof methods. New flat roofs in London and the UK need to come up to the new building regulations. In this video I try to explain the difference between the two methods of construction for a new warm flat roof and a new cold flat roof.
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.
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.
Part L of the Building Regulations and insulating flat roofs. Part L has always been an issue with flat roofing as some people don’t want to insulate their flat roofs.
This old flat roof above a shop in Pinner was leaking for some time. As it’s a walkway to the flat above, the new roof had to have tiles over the top. This roof was well constructed so we were able to use normal concrete tiles rather than promenade tiles. The roof walls were insulated using Kingspan insulation to a depth of 100mm, then a new decking over the top with the Kemperol V210 System.
This new flat roof has been laid using the Kemperol v210 System. We laid the system over new decking over insulation which forms a warm roof that conforms to the new building regulation standard Part L1b. Promenade tiles have been laid over the new Kemperol flat roof to protect it from people walking on it; the promenade tiles are standard light weight tiles.
Flat roof insulation and a liquid applied roof finish, not a liquid rubber but a material called Kemper. Forming a box gutter on a flat roof can be complicated; we now use the Kemperol v210 System. Kemperol v210 stays flexible for the lifespan of the roof. Liquid flat roofing materials are superb for use on flat roofs and box gutters that have lots of detail. If you have ever worked with mineral felt, just think how hard it would be to dress the felt inside this box gutter!
This flat roof is not an EPDM roof, it’s a TPO flat roof. The roof is in North London and is around 1000m²; it’s a new flat roof, but there are several problem areas on the roof, most of which are down to other contractors not being vigilant. However some of the problems are down to the joints in the material not being made correctly.
