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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Components such as cover of pad disposal hole, metal door to the hole to take out the burnt ashes, chimney to outlet the fume, and chimney cap were lacking in almost all schools' incinerators (Table 1).
Underwriters Laboratories (UL) specifies that any chimney lining system that is to be listed to their test standard must include a chimney cap.
Consider having an experienced mason check the chimney walls, flashing at the roof line and the chimney cap.
By simply sealing the bricks and the crown and adding a chimney cap, you'll greatly extend your chimney's life.
Some repairs were made around the exterior of the exposed chimney, and a new chimney cap was installed.
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.
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.