To protect the long grooves and notches from the weather we use gasketing. We use a flexible gasket resembling a three-bladed wiper on the outside groove, and a self-adhesive foam strip on the inside. The outside gaskets are stapled into position as the log shell is being disassembled in the yard, whilst the internal foam gasket is stuck on during reassembly of the shell on site. Treated wool insulation is also used in the long grooves and notches during reassembly.
All these measures ensure a tight seal to protect from water, air infiltration and insects.