Last edited 07 Apr 2021

Bond stone

The bond stones seen on the end of the right wall of the Footpath at Nab End, Longwood extend across the width of this tall, battered, dry-stone wall and serve to strengthen it.

A bond stone (also known as a bonding stone, boutisse, through stone, tie stone, parpen, parpent or parpend) is a large stone which passes through a wall from one side to the other. The purpose of the bond stone is to lock the layers of the wall together and reinforce the structure.

See also Perpend

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