Fillet piling system

Joinery with a bat dormer and collar plank system for thatched roof

Joinery with bat dormer and half fillet plank system for thatched roof

The collar plank system is a carpenter's construction for creating the dormer roof in the dormer area of bat dormers or ox eyes. The construction is built on the basic level of the valley / valley board , hence the name “collar board system”. Support arches, similar to the frames of a ship's hull, complete the construction.

literature

• Manfred Euchner: Round dormers and bat dormers .