Chimney chase covers replaced in Harlem Heights

Laying out a cover for two chimney pipes

Some chases carry two chimney pipes, such as two fireplaces on different floors. Each pipe needs its own collar at its measured center, and the cover has to drain away from both. One manufacturer suggests terminations in a shared chase sit at least twenty-four inches apart center to center, at staggered heights. We measure each pipe's position on the old top and confirm the spacing before fabrication so the new openings line up with the pipes. The drainage has to work between the two collars as well, so water never pools in the space that separates them.

Why a stock size seldom fits

Chases are framed to suit each house, and their sizes vary widely. A stock cover that is nearly right leaves a gap or an overhang somewhere, and its collar may not line up with the pipe. Our replacements are fabricated to measurements taken on your roof, with the collar placed at the pipe's measured center. Custom fabrication means a short wait between measuring and installation, which we explain when scheduling so you know what happens in between. The measurements are written on the order itself, so the fabricated cover can be checked against them before it goes up.

Checking the cap screen while we are up there

Many termination caps carry a screen that keeps animals and debris out of the pipe. Since the cap comes off during a cover replacement, we look at its screen at the same time. A screen torn open, rusted through or packed with debris is noted with a recommendation. Cleaning or replacing the listed cap is its own item, so you can approve it along with the cover or leave it for later. A clear screen also matters for the chimney's draft, so a blocked one is worth fixing even without animal trouble.

What to tell us when you call

A few details help us plan the inspection of your Harlem Heights chase, and none of them requires a ladder. You do not need to know the metal or the fireplace model. If you still have closing papers or the fireplace manual, those help too. If the fireplace is on a second floor or behind furniture, mention it so we plan the inside look as well.

• When you first noticed rust, stains or noise
• Whether the fireplace burns wood and is still in use
• Whether the roof or siding was replaced recently
• How many stories the chase rises