Ventura Roof Pros provides professional chimney flashing in Ventura, CA for residential and commercial properties across western Ventura County. A chimney is a wall standing in the middle of a roof, and wind drives water up its sides. That is why the chimneys we repair leak at the top of the flashing rather than at the bottom, and why sealant is a two-year answer to a twenty-year problem.
Flashing a chimney properly takes two layers. Step flashing goes up the sides, one piece per shingle course, woven into the roof so each piece laps the one below it. Counterflashing then comes down over the step flashing and is let into the masonry, so the joint is covered by metal rather than closed with caulk. Neither layer works without the other, and skipping one is not a saving.
The counterflashing detail is the whole job. We cut a kerf into a mortar joint, fold the top edge of the metal into it, wedge it, and seal the reglet. That is a mechanical connection and it survives movement. Surface-mounted counterflashing bedded in sealant against the face of the brick relies entirely on that sealant, and sealant on a sunlit masonry wall here does not last.
On the upslope side, anything wider than about thirty inches needs a cricket. A back pan on its own dams water and debris against the masonry, and on a tile roof it dams them under the tile as well. A framed cricket splits the flow around the chimney, and it is one of the details we most often find missing on houses built here between the 1920s and the 1940s.
Roof cement is not a waterproofing layer. It is a bedding compound and a temporary measure, and a chimney wearing a cone of black mastic is a chimney whose flashing was never rebuilt. We take that off, find out what is underneath it, and put metal where the metal should have been in the first place. If mastic is the only thing between your chimney and the weather, budget for the rebuild.
While we are up there we look at the masonry itself, because flashing is only as good as what it is let into. A cracked crown, open mortar joints, spalled brick or a missing rain cap will keep a chimney wet from above no matter how well it is flashed, and we will tell you when the repair you need is a mason's rather than ours.
Our licensed and insured team brings the right materials and equipment to every job — ASTM D7158 Class H wind-rated shingles, factory-sealed starter strip at eaves and rakes, hemmed drip edge on a continuous cleat, ring-shank deck re-nailing at tightened spacing, self-adhered modified bitumen underlayment, double-lock mechanically seamed standing seam panels — and backs the work with a written workmanship warranty. We serve Ventura and nearby communities including Camarillo, Santa Paula, Fillmore, Ojai.
What We Handle
Everything our chimney flashing in Ventura covers
One crew, one point of contact, and the full range of chimney flashing work in Ventura, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- chimney flashing repair
- step flashing
- two-piece counterflashing
- kerf cut reglet
- chimney cricket
- back pan flashing
- masonry chimney crown repair
- chimney rain cap
- tile roof chimney flashing
- roof cement removal
- chimney leak diagnosis
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Ventura services.
Materials, equipment and how we do chimney flashing
The difference between chimney flashing that lasts and chimney flashing that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with ASTM D7158 Class H wind-rated shingles, factory-sealed starter strip at eaves and rakes, hemmed drip edge on a continuous cleat, ring-shank deck re-nailing at tightened spacing, 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 Ventura 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 western Ventura 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 flashing outside Ventura
Ventura Roof Pros covers Ventura and the surrounding communities of western Ventura 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 Flashing in Camarillo, CA — Ventura County, population 70,741
- Chimney Flashing in Santa Paula, CA — Ventura County, population 30,657
- Chimney Flashing in Fillmore, CA — Ventura County, population 16,419
- Chimney Flashing in Ojai, CA — Ventura County, population 7,637
- Chimney Flashing in Port Hueneme, CA — Ventura County, population 21,954
- Chimney Flashing in Moorpark, CA — Ventura County, population 36,284
Start on the Ventura Roof Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Ventura Chooses Ventura Roof Pros
- ✓Edge-first scoping: rake metal, starter product and fastener count are priced as line items, never assumed
- ✓Zone-based fastening, with tighter spacing at the perimeters and corners where uplift actually concentrates
- ✓Post-event inspections that hand-test the sealant bond instead of judging a roof from the driveway
- ✓We decline work that will not hold, including overlays on exposed rakes and unbaffled ridge vent on wind-facing slopes
The standards behind chimney flashing
Quality here is not a matter of opinion — it is written down. The chimney flashing work we do in Ventura 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 flashing project in Ventura 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 flashing free estimate in Ventura, or request a quote and we'll get right back to you.