This week the roof is really starting to look like a roof from the outside as well as the inside. Monday we laid the insulation (50mm cork) on top of the boards of maritime pine, followed by the waterproof breathable membrane. No sooner had that gone down than the weather decided to test it out. We haven’t had a drop of rain since we took the roof off back at the beginning of July (well, apart from a 15-minute shower of dirt) and it waited until the very moment we got the waterproofing on. Considerate weather! Damn! When you’ve lived in Scotland for more than half your life, that’s a real novelty.
With the membrane fixed in place, the roof was ready to start re-laying the original schist slabs.
We are fixing the bottom, middle and top courses of schist slabs in place to prevent any slippage. We’re also creating slightly more overlap between courses than was used in the original roof, both for better coverage and waterproofing and to hold the stone in place. This roof should never move!