The first job on site was to dry the external OSB on to which the membrane was to be bonded. Large and small flame-blowers were put to work. Once the surface was dry the membrane could be rolled out and bonded. We are using Ruvitex single ply system. My father is very doubting about flat roof systems in principle but we have been reassured that the technology has advanced leaps and bounds since the 70's & 80's. This product comes with a 20yr warranty.
There has been an issue with the membrane not bonding to the rooflight upstands, so Andrew is going to make some ply sleeves for the membrane to adhere to.
Look a small puddle of water...should I be worried? When it rains the water gushes out and down, so this is what gathers when the rain has stopped. It will evaporate, it's not massive...?!?
A return trip is due next week to finish the rooflight upstands and the gutter vent detailing. Typically now that we are watertight, the rain stopped and the sun shone!