Chimney Chase Cover Replacement and Chase Siding Repair in Dallas

Rusted chase covers, leaking chases and rotten trim replaced before water reaches the framing.

Chimney Chase Cover in Dallas: Typical price $1,000 – $3,500

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What a Chimney Chase Cover Is

Many Dallas-area homes built from the 1980s on have a factory-built fireplace instead of a masonry chimney. On the roof, the flue pipe runs up through a wood-framed box clad in siding: the chimney chase. The flat metal lid on top of that box is the chase cover, sometimes called a chase pan.

The chase cover keeps rain out of the chase and directs it off the edges. The flue pipe passes through a collar in the middle, and a storm collar and cap sit above it.

Builders usually installed galvanized steel covers. They are flat, they hold water, and in Texas weather they rust. Once they rust through, every rain runs straight into the chase, down the framing and often into the ceiling or the firebox below.

Signs Your Chase Cover or Chase Is Failing

Orange rust streaks running down the siding of the chase
Water stains on the ceiling or wall around the fireplace
Water or rust in the firebox after rain
Soft, swollen or rotting trim boards and siding on the chase
Peeling paint or gaps at the chase corners
A sagging or dished chase cover that holds standing water

Chase leaks are often mistaken for roof leaks. If you have a factory-built fireplace and a stain near it, the chase cover is the first thing we check. Our chimney leak repair page covers other leak sources.

Many DFW neighborhoods built in the 1990s and 2000s, in Plano, Frisco, McKinney and Allen, have factory-built fireplaces with siding chases. Those original covers are now reaching the end of their life at the same time, which is why chase cover replacement is one of the most common leak repairs we do in the northern suburbs.

What We Find on Dallas-Area Chase Calls

The most common finding is simple: a builder-grade galvanized cover that has rusted at the seams and around the flue collar. Replacing it with a sloped stainless steel cover with a raised collar and drip edges stops the leak at the source.

When a leak has been running for a while, the damage spreads. Trim boards rot, siding swells, and the corners open up. Sometimes the framing inside the chase is wet. We open up what needs opening, replace the rotten wood, and re-side and re-trim the chase so it matches the house.

Some chases are also too short for the roof line and need to be built up so the flue clears the roof properly. We handle chase build-ups as well.

Animals are another chase problem. Gaps around a rusted cover or a damaged storm collar let birds and squirrels into the chase, where they nest on the insulation. We seal those gaps when we replace the cover, and handle animal and nest removal if something has already moved in.

Stainless Chase Covers, Siding and Trim Repair

Chase cover replacement: a custom-measured stainless steel cover with a slight slope, cross-breaks to shed water, a raised flue collar and drip edges on every side. Stainless doesn’t rust the way galvanized does.

Trim replacement and caulking: rotten or split corner boards and trim replaced and sealed.

Siding repair or full rebuild: from re-nailing, caulking and painting a few boards to replacing all the siding, trim and corners on the chase.

Rotten wood repair: damaged sheathing and framing replaced before new siding goes on.

We pair chase work with a new chimney cap and storm collar where the old ones are worn out.

Paint is part of the job. New trim and siding is primed and painted to match the house, and every joint is caulked so water sheds off the chase instead of soaking into it. A chase that is sealed properly at the top, sides and corners should not need attention again for many years.

How Chimney Chase Cover Works, Start to Finish

Inspect the Chase

We start on the roof, at the top of the chase.

The technician checks the chase cover for rust, sagging and pooled water, then the storm collar, the cap, the siding, the trim and the corners. Soft or stained wood is probed, and we look inside from the attic or firebox where we can.

You get photos and a fixed price for what the chase actually needs.

Replace and Repair

The leak is fixed at the top first.

The old cover comes off and a custom stainless cover, sloped so water runs off with a drip edge on every side, is fabricated to the exact size of your chase and fastened through the sides rather than the top. A new storm collar is sealed around the flue pipe.

Rotten wood, siding and trim are replaced, primed, caulked and painted so the chase matches the rest of the house. Where the chase needs height, a build-up is added before the new cover goes on.

Seal and Confirm

Before the crew leaves, every seam is checked.

The collar, the cap and the siding joints are sealed and we confirm water runs off the chase and away from the roof. You get photos of the finished work.

Pricing

Chase Cover and Chase Repair Prices in Dallas

Stainless chase covers typically cost $1,000 to $3,500 depending on the size of the chase. Siding and trim repairs are priced by how much wood needs replacing.

Call 972-884-5553 Book online

Service	Typical price
Chase cover or chase pan replacementCustom stainless steel	$1,000 – $3,500
Chimney trim replacement and caulking	$1,000 – $1,742
Chimney siding repairCaulk, nail and paint	$322 – $2,890
Full chase siding, trim and corners rebuild	$3,800 – $6,850
Rotten wood repairSheathing and framing	$840 – $3,650
Chimney chase build-up (3 ft)	$1,600
Chimney safety inspection (structure, cap, flashing, brick and siding)Waived when you book the repair	$79

Your exact price is confirmed on site before any work starts. The $79 safety inspection is waived when you book the repair.

FAQ

Chimney Chase Cover Questions

How much does a chimney chase cover cost?

A custom stainless steel chase cover typically runs $1,000 to $3,500 installed in Dallas, depending mostly on the size of the chase.

Why is my chase cover rusting?

Most builder covers are galvanized steel and flat, so water sits on them. In Texas weather they rust within years. Sloped stainless covers last much longer.

Is a chase leak the same as a roof leak?

Often not. Water entering through a rusted chase cover runs down inside the chase and can look like a roof leak around the fireplace.

Can you repair just the siding?

Yes. Small siding and trim repairs cost much less than a full rebuild. We repair what is damaged.

Do I need a new cap with a new chase cover?

Not always. If the cap and storm collar are rusted or damaged, replacing them at the same time saves a second trip.

What is a chase build-up?

Extending the chase so the flue clears the roof line properly, usually by about three feet.

How long does chase cover replacement take?

Most covers are measured on the first visit and installed when the custom cover is ready. Installation itself usually takes a few hours.

Can water damage inside the chase be fixed?

Yes. Wet sheathing and framing are replaced before new siding goes on, so the problem does not come back.

Areas We Serve for Chase Cover Replacement

The Chimney Inspection & Sweep serves Dallas and the full DFW Metroplex for chimney chase cover.

We work across Dallas, Plano, Carrollton, Irving, McKinney, Frisco, Allen, Garland, Richardson, Addison, Arlington, and all surrounding communities. If you’re in the DFW area, we can get a crew to you.

Schedule Your Dallas Chase Cover Inspection

Stopping the leak at the top of the chase protects the framing, the fireplace and the ceiling below.

Call us at 972-884-5553 or email info@theonechimneysweep.com to schedule. With 12 active crews and 24/7 availability, we can typically get to you within days, not weeks. We’ve been serving Dallas-area homeowners since 1991. You can also book online.