Rancho Cucamonga Roof Pros provides professional chimney & chase flashing in Rancho Cucamonga, CA for residential and commercial properties across the western Inland Empire. Most chimneys in this city are not masonry at all. They are a metal firebox inside a framed chase, wrapped in stucco, with a sheet-metal cover on top and a flue through it. That changes where the leak is and what it costs.
The single most common failure we find is the chase cover. Builders used galvanized steel with a shallow crown and a caulked storm collar, and after twenty-five summers the pan holds water, rusts through at the low corner and drips inside the chase where you cannot see it. The interior evidence arrives late, as a stain on the ceiling next to the fireplace or a smell after rain.
We replace those covers in twenty-four gauge stainless or Kynar-finished aluminum, formed with a cross break so the pan drains, a two-inch turned-down skirt with a drip edge, and welded corners rather than folded ones. The flue penetration gets a new storm collar and a slip collar detail rather than a bead of sealant, because sealant at that joint is a three-year product on a twenty-year cover, and it is always the first thing to fail.
At the roof plane the second failure is the upslope side. A chase two feet wide or more needs a cricket, and on a tile roof it needs one in soldered metal, run under the courses above with the underlayment lapped over it. What we find instead is flat pan flashing and mortar packed against the stucco. Water backs up behind that, sits in the batten space, and rots the sheathing at the corners.
Counterflashing has to be let into the stucco, not surface-mounted onto it. That means cutting a kerf, inserting the leg, and sealing at the top edge only. A flashing screwed to the face of a stucco wall and caulked is a two-year repair, and we see hundreds of them.
If the chase is being reflashed and the felt on that plane is near the end of its range, say so out loud to whoever is quoting the work. Reflashing a chase means lifting the tile around it, which is most of the cost, and doing that twice in three years is how a cheap repair turns into an expensive one. We will price it both ways so you can decide.
Our licensed and insured team brings the right materials and equipment to every job — self-adhered SBS modified underlayment meeting ASTM D1970, high-temperature synthetic underlayment rated above 240 degrees, thirty-pound organic felt, ASTM D226 Type II, counter-batten and drainable batten systems, stainless steel nose clips and wire-tie tile hooks, dry ridge vent systems in place of mortar bedding — and backs the work with a written workmanship warranty. We serve Rancho Cucamonga and nearby communities including Upland, Claremont, La Verne, San Dimas.
What We Handle
Everything our chimney & chase flashing in Rancho Cucamonga covers
One crew, one point of contact, and the full range of chimney & chase flashing work in Rancho Cucamonga, CA. If it is on this list we do it in house rather than handing it to a subcontractor:
- chimney flashing repair
- chase cover replacement
- chimney cricket
- prefab chimney chase
- stucco chase repair
- chimney counterflashing
- headwall pan flashing
- chimney leak repair
- chimney crown repair
- chimney flashing cost
- fireplace chase leak
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Rancho Cucamonga services.
Materials, equipment and how we do chimney & chase flashing
The difference between chimney & chase flashing that lasts and chimney & chase flashing that gets redone in three years is almost always preparation and materials, not the finish you see on day one. We work with self-adhered SBS modified underlayment meeting ASTM D1970, high-temperature synthetic underlayment rated above 240 degrees, thirty-pound organic felt, ASTM D226 Type II, counter-batten and drainable batten systems, 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 Rancho Cucamonga 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 the western Inland Empire 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 & chase flashing outside Rancho Cucamonga
Rancho Cucamonga Roof Pros covers Rancho Cucamonga and the surrounding communities of the western Inland Empire. 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 & Chase Flashing in Upland, CA — San Bernardino County, population 79,040
- Chimney & Chase Flashing in Claremont, CA — Los Angeles County, population 37,266
- Chimney & Chase Flashing in La Verne, CA — Los Angeles County, population 31,334
- Chimney & Chase Flashing in San Dimas, CA — Los Angeles County, population 34,924
- Chimney & Chase Flashing in Glendora, CA — Los Angeles County, population 52,558
- Chimney & Chase Flashing in Covina, CA — Los Angeles County, population 51,268
Start on the Rancho Cucamonga Roof Pros homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Rancho Cucamonga Chooses Rancho Cucamonga Roof Pros
- ✓We quote the relay before the replacement, because on most tile roofs in this city the tile is not what failed
- ✓Three tile lifts per plane on every inspection, at the valley, mid-slope and one course above the eave
- ✓Proposals name the underlayment product and its ASTM designation, the batten layout and the valley metal gauge
- ✓New valley metal, dry ridge venting and stainless nose clips included by default on every relay
The standards behind chimney & chase flashing
Quality here is not a matter of opinion — it is written down. The chimney & chase flashing work we do in Rancho Cucamonga 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 & chase flashing project in Rancho Cucamonga 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 & chase flashing free estimate in Rancho Cucamonga, or request a quote and we'll get right back to you.