London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
Can you confirm whether (in order to meet building regs) lead flashing is required over the top of the up stands? I noticed in a video you used the term ‘self terminate’? Also, should the ‘fleece’ be cut into the wall as you would normally see with lead flashing?
We spoke via email about 5 years back. I was asking your opinion on The Kemper Roofing system. After getting your positive feedback I became authorized and have been installing ever since with great waterproofing success. Over the years I have had the some complaints and wanted your opinion.
We show you how we dress Kemper around skylights added to a new roof some years after the original roof was laid. It takes time to dress any flat roofing material around flashings, even Kemper takes time, however one thing we know for sure is that Kemper will stay put, remain flexible and last longer than most outer flat roof coverings.
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.
The customer’s insurance company made the decision to dress over this new, but leaking, asphalt balcony. The roofing details to the parapet wall and the railings are very poor; the roof was leaking in several places. As the majority of the roof is detail and to dismantle the windows and the railing would be expensive, the decision was to take a two stage approach to stopping the roof from leaking.
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.
Kemper V210 or Kemperol is a liquid roofing material used to form new flat roofs. It’s a system that always stays flexible. Kemperol can be over laid on old felt roofs or on old asphalt roofs and can also be used over ply and concrete.
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!
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.
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.
