Why Your Chimney Cap Matters More Than You Think
A chimney cap is the unassuming metal cover and screen at the top of your flue. It’s easy to overlook — until it’s missing or damaged, at which point a surprising number of expensive problems follow. For the cost of one part, it quietly does three important jobs.
It keeps water out
An uncapped flue is an open pipe pointed at the sky. Rain and snow fall straight in, and over time that moisture rusts dampers, deteriorates mortar joints, and accelerates the freeze-thaw cracking that breaks down masonry. Water is one of the most destructive things a chimney faces, and a cap is the first line of defense.
It keeps animals out
Warm, sheltered flues are prime nesting sites for birds, squirrels, and raccoons. A nest doesn’t just block the flue — it’s a fire hazard and a common source of that scratching or chirping people hear in the chimney. The cap’s screen keeps wildlife from getting in to begin with.
It contains sparks
The screen on a cap also acts as a spark arrestor, stopping hot embers from drifting onto your roof or yard — which matters during dry stretches. If your cap is missing, rusted through, or its screen is torn, it’s worth replacing.
We check the cap and spark arrestor as part of every inspection. If you’re in Jacksonville, NC and aren’t sure yours is in good shape, call Jacksonville Chimney Sweep Pros at (910) 597-3918 and we’ll take a look.
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