Chimney cap

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a device to improve the draught of a chimney, by presenting an exit aperture always to leeward.

See also: Chimney

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References in periodicals archive ?
Consider having an experienced mason check the chimney walls, flashing at the roof line and the chimney cap.
The new finished chimney cap shall be made of concrete like the existing chimney cap;
In leasehold properties, removing the chimney cap may require permission from the freeholder.
All you need to do is cap the chimney with a vented chimney cap.
Make sure chimney cap screens are in good condition, dampers are open for proper operation and chimneys are cleaned.
To clean the liner, I open a cast iron clean-out door which is located just below that 1/4 inch steel plate, pull the stainless bottom plate off of the stainless liner, and send my chimney brush and rods up the 30-foot length of the flue until the brush pops out the top, just inside the chimney cap.
Not one to miss a hot trend, Duraflame has a tall wrought-iron patio fireplace with a chimney cap to keep out rain ($379; duraflame.