Grand Junction Premium Roofing provides professional chimney flashing in Grand Junction, CO for residential and commercial properties across the Grand Valley. If this site has one page that matters more than the rest, this is it. On a valley floor of expansive shale, a masonry chimney and the roof deck it passes through are two structures resting on different foundations, and they do not move together.
A chimney is carried on its own footing or a thickened slab, while the roof deck is carried on the walls. When shale swells beneath one and not the other, the stack shifts a fraction of an inch out of plane with the roof. It is undramatic and invisible from the ground. It is also more than enough to break a sealed joint, and it does that every year, in the same direction, on a seasonal cycle.
Which is why one-piece surface-mounted counterflashing fails here so predictably. It relies on a bead of sealant held against masonry to stay watertight, and that sealant is quietly being asked to serve as a moving joint. Three to five years is typical before it opens up, and the homeowner is usually told the roof has gone bad.
We fit two-piece instead. Step flashing woven into the shingle courses, then separate counterflashing cut into a sawn reglet in the mortar joint, folded, wedged and sealed at the reglet only. The two pieces overlap without being fastened to one another, so the stack can shift relative to the roof and the overlap simply slides. It is the same principle as an expansion joint and it costs very little more.
Two further details we never skip. Stacks measuring more than about thirty inches across the slope get a cricket, framed and flashed, so that water and debris divide around them instead of piling up on the upslope face. And where roof meets sidewall beside the stack, a kick-out at the bottom of the run keeps that concentrated stream off the siding and out of the wall cavity.
If your chimney has leaked in three separate springs and been sealed three separate times, stop buying sealant. Cut a proper reglet, fit real metal in two pieces, and the leak stops being an annual event. We have re-flashed stacks that three previous contractors had sealed, and the roofs underneath were sound every time. That is not a knock on them. It is what happens when the standard detail is wrong for the ground.
Our licensed and insured team brings the right materials and equipment to every job — two-piece counterflashing set into a sawn mortar reglet, self-adhered ice-and-water membrane at valleys and penetrations, floating clips and slotted trim holes on standing seam steel, six-nail fastening patterns sized for downslope canyon wind, framed and flashed chimney crickets above thirty inches, reinforced acrylic elastomeric coating at specified dry film thickness — and backs the work with a written workmanship warranty. We serve Grand Junction and nearby communities including Clifton, Fruita, Redlands, Fruitvale.
What We Handle
Everything our chimney flashing in Grand Junction covers
One crew, one point of contact, and the full range of chimney flashing work in Grand Junction, CO. If it is on this list we do it in house rather than handing it to a subcontractor:
- chimney flashing repair Grand Junction
- chimney leak Mesa County
- counterflashing reglet
- chimney cricket install Grand Valley
- step flashing repair
- masonry chimney leak Colorado
- chimney flashing cost Grand Junction
- chimney chase cover
- chimney crown repair
- roof to wall flashing
- chimney saddle roofing
- leaking chimney every spring
Not sure which one describes your situation? Describe it in plain words and we will sort it out — or browse the rest of our Grand Junction 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 two-piece counterflashing set into a sawn mortar reglet, self-adhered ice-and-water membrane at valleys and penetrations, floating clips and slotted trim holes on standing seam steel, six-nail fastening patterns sized for downslope canyon wind, 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 Grand Junction 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 Grand Valley 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 Grand Junction
Grand Junction Premium Roofing covers Grand Junction and the surrounding communities of the Grand Valley. 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 Clifton, CO — Mesa County, population 20,413
- Chimney Flashing in Fruita, CO — Mesa County, population 13,395
- Chimney Flashing in Redlands, CO — Mesa County, population 9,061
- Chimney Flashing in Fruitvale, CO — Mesa County, population 8,271
- Chimney Flashing in Orchard Mesa, CO — Mesa County, population 6,688
- Chimney Flashing in Palisade, CO — Mesa County, population 2,565
Start on the Grand Junction Premium Roofing homepage for a free estimate, or call (844) 511-2320 and describe the job.
Why Grand Junction Chooses Grand Junction Premium Roofing
- ✓We read the inside of a house before pricing the outside, because on Mancos Shale a leak that returns each spring is movement rather than material wear.
- ✓Two-piece counterflashing cut into a sawn mortar reglet is our standard chimney detail, never an upcharge, because sealed one-piece metal fails here on a seasonal cycle.
- ✓We argue against impact-rated shingles on this side of the divide. Mesa County logged 14 hail reports from 2016 to 2025; Larimer County logged 143.
- ✓Inspection fees are never credited against work. An inspector who only gets paid when you buy a roof has stopped being an inspector.
The standards behind chimney flashing
Quality here is not a matter of opinion — it is written down. The chimney flashing work we do in Grand Junction 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 Grand Junction 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 Grand Junction, or request a quote and we'll get right back to you.