Flat Roof insulation

Thermal Bridging

Thermal Bridging of an Insulated Flat Roof Through the Front Fascia

I have watched a few of your videos in regards to flat ‘warm roofs’ on YouTube and have found them to be of great guidance with my current new build extension. Accordingly, I would be most grateful if you would answer a couple of questions that I have regarding your video posted on YouTube entitled ‘Thermal Bridging of a insulated flat roof through the front fascia’.

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Warm Roof & Cold Roof Venting

Warm Roof & Cold Roof Venting

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. 

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Old Mineral Felt Roof

Enquiry Regarding Old Mineral Felt Roof

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.

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