Tar patch removal
Failed tar patches are stripped and replaced with real flashing so the repair does not depend on sealant.
Masonry Repair
Chimney Flashing Repair Waldorf, MD
A chimney sweep in Waldorf can repair or replace the flashing where the chimney passes through the roof, the most common source of chimney leaks into attics and ceilings, so the joint sheds water the way it was designed to. One call to (240) 358-7621 reaches a nearby chimney flashing pro.
Chimney flashing is the metal that seals the gap between the chimney and the roof, and when it fails, water runs straight into the attic. Because masonry and roof framing expand, contract and settle at different rates, a rigid seal will crack, which is why flashing is built in overlapping layers. Years of sun, freezing and thawing loosen the counter flashing, rust thin metal and dry out every bead of caulk.
Good flashing is a system, not a single strip of metal. Step flashing is a series of L-shaped pieces woven in with each course of shingles along the sides of the chimney, and counter flashing covers the top edge of the step flashing and is set into a groove cut in the mortar joints. A front apron covers the downhill face, and on the uphill face a cricket or saddle diverts water and snow around the chimney.
A Waldorf chimney sweep will want to know a few things about the leak. Note whether the stain is on the uphill or downhill side of the chimney, whether it leaks in every rain or only in heavy storms, and when the roof was last replaced. If you can see black tar smeared around the chimney, say so, because that usually means earlier patches have already failed.
Depending on what the sweep finds, chimney flashing repair in Waldorf, MD can go hand in hand with chimney leak repair and chimney waterproofing.
Need chimney flashing repair in Waldorf? Call (240) 358-7621 to reach a nearby chimney sweep.
Call nowThe process
The flashing repair process
Flashing repair is about rebuilding the layers so water always runs over a joint, never into it.
Check the flashing
Each part of the flashing is inspected, along with the condition of the surrounding roofing. The roof deck under the flashing is checked for soft spots.
Test for leaks
Flashing leaks can be confused with crown, cap or brick leaks, so other sources are ruled out. It makes sure the repair matches the actual source.
Remove old patches
The technician strips off old roofing cement and corroded pieces down to the roof deck. Soft or rotted sheathing under the old flashing is repaired first.
Weave in new flashing
New step flashing is installed piece by piece along the sides, interwoven with each course of shingles. A front apron and a waterproof underlayment complete the lower layers.
Seal into the mortar
The top layer is set into the masonry itself, overlapping the step flashing below. Surface-mounted flashing held on by caulk alone is avoided because it fails quickly.
Divert uphill water
Where water pools behind the chimney, a cricket, also called a saddle, is built to shed it. That removes the spot where water sits and soaks into the flashing.
What is included
Flashing work a chimney sweep handles
Step flashing
Loose step flashing is reset or renewed with every piece lapped correctly.
Counter flashing
Loose counter flashing is replaced and set into the masonry which closes the most common gap.
Front flashing
The lower apron is reset over the shingles where water from the chimney face drains off.
Crickets
A cricket is added behind a wide chimney or one where water pools so debris and ice stop collecting there.
Related service
Chimney Flashing Replacement Waldorf, MD
When flashing is rusted, bent or covered in years of patches, replacing it outright is usually smarter than another repair. The old metal comes off completely, and new step flashing, counter flashing, apron and cricket are installed as a system. A common shortcut is to reuse the old flashing during a reroof, and that often leads to a leak within a few years.
If you are replacing the roof on a Waldorf home, that is the ideal time to replace the chimney flashing too. Plan it so the masonry side of the job, cutting the reglet and setting counter flashing, happens while the shingles are going on. While everything is exposed, a quick look at the crown, cap and upper mortar joints can save a second trip onto the roof.
Local help
Chimney Flashing Repair Near Me
In Waldorf, flashing tends to fail first on older roofs and on chimneys that sit below a long run of roof. From Waldorf out to neighboring communities such as Bensville, La Plata, Brandywine and Accokeek, freeze-thaw and summer heat both work on the joint between the chimney and the roof, and fixing it before the decking rots keeps the repair small.
For chimney flashing repair in Waldorf, MD or nearby towns like Bensville, La Plata, Brandywine and Accokeek, call (240) 358-7621 to reach a chimney sweep who covers your street.
How the weather here affects chimneys around Waldorf
Winters here are moderate, but cold nights still come regularly and fireplaces see real use from late fall into early spring. Temperatures cross the freezing mark again and again, which is hard on brick and mortar, and soaking rains in spring and fall test every crown and flashing joint. In summer, humidity and nesting animals become the bigger issue. People in Waldorf, MD usually schedule their sweep in October or November.
Why call
Why fix it now
Safer fires
Small chimney problems caught early usually stay small repairs.
Local knowledge
Chimney sweeps in Waldorf know the chimneys and fireplaces common in local homes.
Straight answers
Ask your questions before you agree to anything.
Common questions about chimney flashing repair
Do I need new chimney flashing when I replace my roof?
The roof replacement is the best time to do it. Since step flashing is layered with the shingles, replacing it later means disturbing the new roof. Old flashing reused under a new roof often leaks within a few years.
What is a chimney cricket?
Also known as a saddle, a cricket is a small roof section behind the chimney that diverts runoff to either side. Wide chimneys block a lot of runoff, and without a cricket that water sits against the flashing. For wider chimneys that do not sit on the ridge, a cricket is usually required by code.
How do I know if my chimney flashing is leaking?
The most common sign is a water stain on the ceiling or wall right next to the chimney, or wet wood beside the chimney in the attic. Water inside the fireplace points higher up, while water along the chimney chase or ceiling points to the roof joint. A controlled water test settles it.
Should I repair or replace my chimney flashing?
That comes down to the condition of the metal. If the flashing is in good shape but the counter flashing has pulled out of the mortar, it can often be reset and resealed. If it is rusted through, badly bent or buried under old tar, replacement is the better value.
Why did caulking my chimney flashing not stop the leak?
Caulk and roofing tar only seal the surface, and they crack and pull loose as the chimney and roof expand and contract. When the flashing itself is the problem, sealant just hides it for a season. It is also possible the water is entering higher up, at the crown or through the brick, and only showing at the flashing.
More questions? Call (240) 358-7621
Related services
Chimney Leak Repair
Stopping chimney leaks at the source, instead of patching the stain on the ceiling.
Learn moreChimney Waterproofing
Protecting chimney masonry from rain with a penetrating repellent, as the last step in keeping a chimney dry.
Learn moreChimney Crown Repair
Repairing the concrete slab that caps the top of the chimney, so water stops soaking into the masonry from the top.
Learn moreChimney Repair
Fixing cracked crowns, failing mortar, loose brick, leaky flashing and damaged flue tiles, matched to what an inspection actually finds.
Learn more
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