London Flat Roofing. 154c Fleet Road, Hampstead, London NW3 2QX
When we painted this flat roof with solar reflective paint, I left a test area so I could see the temperature difference of the old flat roof covering without solar reflective paint and with solar reflective paint.
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?
The lead on these flat roofs is beginning to oxidise and break up before the end of its lifespan. Lead on roofs and flat roofs are supposed to last 30 to 60 years with very little maintenance. What we see more and more is lack of ventilation and roofs sweating; this problem is happening because of the lack of ventilation under the lead flashings.
Here I show you some of the problems with asphalt flat roofs and felt flat roofs. These old roofs have blisters forming in them because of water vapour getting trapped under them.
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.
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.