Damp and tanking
Benny and George (he’s hiding on the other side) have been putting mortar along the underside of the ridge tiles to make a firm seal to the slates.
These futuristic looking patchs are sealing in pieces of wood that are being used to measure damp in the building. The moisture ought to be wicking out through the walls and so the wood shouldn’t be getting wet. It is looking OK so far ...
The vestry walls are very wet as a result of years of leaking between it and the porch. It is thought that they could take years to dry. So the room is going to be lined with this Newton tanking, which will then be plastered over and decorated to match the rest of the church.