flaunch

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flanch, flaunch

To widen and slant the top of a chimney stack so that water is directed away from the flue.
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References in periodicals archive ?
On chimneys check that chimney pots and the mortar, which is the flaunching, around their bases are sound.
Works includes repairing timber roof trusses and replacing corrigated roof, clearing, pointing and flaunching masonry walls, replacing and concrete floor slab and replacing a number of windows.
Also, check for any damage to chimney pots - including the flaunching, which secures the pot to the chimney stack, since bad weather can cause this to crack.