AskDefine | Define bondstone

User Contributed Dictionary

English

Noun

  1. A stone for bonding masonry to a similar backing

Extensive Definition

Perpend Stone or Bond Stone is a building term used by Stonemason. Usually walls were built with two layers of stone, an inner and an outer layer, with the space between them sometimes filled with rubble. A Perpend Stone was a longer stone, one which went right through the wall, outside to inside, and served to lock the two layers together.
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