Concord Roof Pros provides professional chimney & wall flashing in Concord, CA for residential and commercial properties across central and east Contra Costa County. A chimney is a masonry column standing in a wood roof, and the two do not move together. That is the entire problem. Masonry barely changes dimension while a framed deck expands, contracts and settles, so any joint between them that depends on sealant alone has a short life.
Which is why we do not fix chimney leaks with caulk. Proper flashing is two layers. Step flashing goes in course by course as the roof is laid, lapping the piece below and turning up the masonry. Counterflashing covers those upturns, and its top edge belongs in a reglet cut into a mortar joint, folded and locked, so the assembly can move without breaking a seal. Counterflashing stuck to brick is what most leaking chimneys have.
Wide chimneys need a cricket, a small framed ridge on the uphill side that splits water around the stack instead of letting it pond against brick and sit there through a three-day storm. Code calls for one past a certain width, and its absence is among the most common findings on tract houses here with a fireplace on a rear slope, right alongside a cricket that was framed but never properly flashed into the field.
Wall junctions get the same treatment plus one extra part. Where a lower roof runs into a wall, the step flashing has to terminate in a kickout that throws water out into the gutter. Without it, water tracks behind the siding and surfaces as a stain on an interior wall a floor below, and that repair costs many times what the missing piece of metal would have.
While we are up there we look at the parts above the flashing, because a leak at a chimney is not always a flashing leak. A cracked crown, open mortar joints, a rusted chase cover on a framed chase, a missing rain cap or a spalling brick course all let water into the stack, and it exits at a ceiling looking exactly like flashing failure. Fixing the metal there would have solved nothing.
Sealant does have a role, a small one. It is the last line at a counterflashing hem, and it should be a high-movement joint sealant rated for real travel, tooled into a proper joint, not asphalt mastic troweled over a seam and expected to hold through two summers of daily movement.
Our licensed and insured team brings the right materials and equipment to every job — Class A fire-rated shingle assemblies, SBS-modified bitumen cap sheet, ASTM C920 high-movement joint sealant, floating expansion clips on standing seam, 24-gauge Galvalume panel, reglet-cut counterflashing — and backs the work with a written workmanship warranty. We serve Concord and nearby communities including Pleasant Hill, Martinez, Walnut Creek, Clayton.
What We Handle
Everything our chimney & wall flashing in Concord covers
One crew, one point of contact, and the full range of chimney & wall flashing work in Concord, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- chimney flashing repair
- step and counterflashing
- reglet-cut counterflashing
- chimney cricket installation
- wall-to-roof flashing
- kickout diverter flashing
- chimney crown repair
- chimney chase cover replacement
- sidewall flashing replacement
- masonry chimney leak
- head flashing above windows
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Concord services.
Materials, equipment and how we do chimney & wall flashing
The difference between chimney & wall flashing that lasts and chimney & wall flashing that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with Class A fire-rated shingle assemblies, SBS-modified bitumen cap sheet, ASTM C920 high-movement joint sealant, floating expansion clips on standing seam, spec them to the job instead of to the invoice, and write the material grades into the free estimate so you know exactly what you are buying.
Every Concord job runs the same way: site walk and measurements, written scope and fixed price, protection of the surrounding area, then the work itself with a daily clean-up. Years of roofing work in central and east Contra Costa County means we have already met whatever your property is going to throw at us — awkward access, older construction, an HOA with opinions.
Where we do chimney & wall flashing outside Concord
Concord Roof Pros covers Concord and the surrounding communities of central and east Contra Costa County. Crews run out to the same nearby cities every week, so an out-of-town job does not mean an out-of-town price.
- Chimney & Wall Flashing in Pleasant Hill, CA — Contra Costa, population 34,613
- Chimney & Wall Flashing in Martinez, CA — Contra Costa, population 37,287
- Chimney & Wall Flashing in Walnut Creek, CA — Contra Costa, population 70,127
- Chimney & Wall Flashing in Clayton, CA — Contra Costa, population 11,070
- Chimney & Wall Flashing in Lafayette, CA — Contra Costa, population 25,391
- Chimney & Wall Flashing in Moraga, CA — Contra Costa, population 16,870
Start on the Concord Roof Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Concord Chooses Concord Roof Pros
- ✓Estimates come from on the roof and in the attic, never from the driveway or from a satellite measurement alone.
- ✓We specify high-movement joint sealant and reglet-cut counterflashing, because asphalt mastic does not survive a daily temperature swing.
- ✓Long metal runs get floating clips and concealed fasteners, so panels can move without wallowing out several hundred screw holes.
- ✓Tile roofs get quoted as a lift-and-relay first, since the underlayment is what expired and the tile itself usually has decades left.
The standards behind chimney & wall flashing
Quality here is not a matter of opinion — it is written down. The chimney & wall flashing work we do in Concord follows published industry standards: NRCA publishes the Roofing Manual, the industry's reference for details and slope minimums, and Asphalt Roofing Manufacturers Association sets the shingle application and ventilation guidance the warranties reference. If a contractor cannot tell you which standard a detail comes from, that is worth asking about before you sign.
Every chimney & wall flashing project in Concord gets the same attention, whether it is a single room or a full commercial job. We show up on schedule, keep the site clean, and stand behind the work — the estimate is free and there is no pressure.
Ready to get started? Call (844) 511-2320 for a free chimney & wall flashing free estimate in Concord, or request a quote and we'll get right back to you.