London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
I’m a keen diy enthusiast building a single storey one room (lounge) extension. I am going to have a rubber membrane flat roof and have been doing some research online. Your videos crop up in the search results frequently. I must say – thanks for the information, it’s great that people like yourself aren’t afraid to pass on your knowledge.
I am in the US and have been told by 3M that the SD650 is not available in the US nor do they expect it to be available any time soon. Do you know of any com parables that might be available in the US? The SD650 looks like just what I need.
I had the conversion done 20 years ago. The flat roof has a very shallow slope and consists of joists, surmounted by furring pieces, transverse spacing battens for ventilation, ply deck with mushroom ventilators, and multiple felt layers. It is also penetrated by a soil pipe near the condensing boiler vent. The ply deck appears to be in sound condition but blackened, presumably by condensation.
If you make holes in the rafters you still will not get the through venting you will need, personally I would look and try to turn this into a warm roof as its a much better way forwards if you cannot then try venting using mushroom vents.
We have a small flat roof at our property in Ealing the bedroom below it was absolutely freezing this winter – we only moved in recently. The roof itself is in good condition and has recently been recovered. What would be the best option for us to insulate this roof?
It’s always hard to seal around a pipe on a roof that’s why we use liquid roofing systems, however to have used a liquid system on this roof would have been a little “over the top” 98% of the roof is flat and EPDM is the perfect materials for large flat areas.
I have converted the garage into a games room and the ceiling has damp patches and the fuse has blown for the lighting. The roof has a drainage hole in one corner which is not very effective , as I have previously seen water pooling on top of the roof. I would also like better insulation in the roof as there is a lot of heat loss and wind that comes through the ceiling light fittings.
I want to put a second layer of ply sheet on top of the insulation board, I can screw that down around the edges, but want to put a line of fixings down the middle, but this would mean going through the board until I get to the ply underneath.
Not only are we insulating this old felt roof, but we are also reversing the way the water drains on the roof; one side of the roof is going to be built up so that all the water drains in the opposite direction. In the attached photos you can see we’ve started to set up some of the insulation, and we’re working out just how this jigsaw puzzle goes together.
This old lead flashing is coming away from the asphalt. When the sun heats the old asphalt it softens, and the weight of the lead pulls from under and starts to slide down into the gutter.
