The timber framers are wrapping the external walls and roof with Agepan DWD protection. It is a 16mm thick tongue and grooved breather board which is sealed with mastic at each joint.
A layer of mastic is applied between the slab and the sole plate for an airtight detail, which is then anchored down into the slab with a steel bolt.
By the end of week 7 the airtight layer is complete.
