The cap and crown keep water, downdraft and animals out of a chimney. We fit and fabricate caps, rebuild cracked crowns and replace rusted chase covers — and you see photos of your own chimney top first.
In Philadelphia the stack often sits on a rowhome party wall with no safe roof to stand on, so this is lift work more than ladder work. In Fishtown, Kensington and Frankford the crown has taken decades of freeze and thaw.
One visit for the whole chimney top. Masonry lower down, flashing and leaks are chimney repair.
Stainless caps sized to the flue, custom fabricated when the opening is not standard, to keep rain, downdraft and animals out.
Hairline cracking gets sealed. A crown that has broken up or lost its overhang gets rebuilt, since coating loose concrete hides it.
The metal chase cover on a prefab chimney rusts through and leaks. We replace it, and can waterproof and top seal masonry on the same lift.
Mesh that keeps animals out and embers in. If something is nesting, removal comes first, which the chimney inspection finds.
Founded by Rebecca and Avi Dadi, and still run by them.
You see the top of your chimney before you spend anything.
A boom lift for stacks a roof cannot safely reach.
Chimneys, air ducts and dryer vents — all in-house, so inspection, cleaning and repair are one visit.
Real Google reviews from Air Duct Dynasty customers.
The crown is the slab atop the masonry that sheds water off the stack. The cap is the lid and mesh over the flue opening. A Philadelphia chimney can need either or both.
Yes. An open flue takes rain, snow and nesting animals even if you never light a fire, and that water works on the mortar and liner. The Chimney Safety Institute of America covers chimney fire and carbon monoxide hazards.
Sometimes. Hairline cracking can be sealed with a flexible coating, and that buys real years. A crown broken into pieces gets rebuilt instead. The $59 inspection tells you which you have.
Yes. Narrow streets and party wall stacks are normal work in Philadelphia. We bring a boom lift when the roof is not a safe platform, and say so up front if a block cannot be reached.
It will if the water is coming down the flue. If it is coming through a cracked crown, failed flashing or open joints, a cap will not touch it, so we check all three.
Tell us what you are seeing — the stain, the flaking brick, the noise in the flue — and we will say where it is coming from.
Air Duct Dynasty · 17 Simons Way, Huntingdon Valley, PA 19006
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If the inspection finds a cracked liner, liner installation can use the same access. The $59 inspection is on the specials page.
A missing cap usually means a season of debris in the flue, so ask about a chimney sweep at the same time.
