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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
CertainTeed Roofing in Montclair, CA | Bedrock Roof Repair
Bedrock Roof Repair provides independent CertainTeed roofing inspection, repair, and replacement across Montclair. We service the full CertainTeed product line on the city’s aging 1950s through 1970s tract homes, where low-slope roofs and shallow drainage paths create problems you won’t find in newer subdivisions. What sets our CertainTeed work apart here is simple: we clear the drainage before we touch the shingles, because in Montclair the scuppers fail before the membrane does. Call (833) 589-7850 for a free estimate.

Our familiarity with CertainTeed systems runs deep. We’ve pulled apart CertainTeed sales & service assemblies on hundreds of Pomona Valley roofs, and we know how Landmark, XT, and Flintlastic actually hold up under inland UV cycling. We’re independent, not manufacturer-affiliated or authorized, so the recommendation follows what your roof needs, not a supplier’s incentive. Alan Cofield, our owner, trained in building trades at Cypress College and has spent two decades reading Southern California roof failures before they become ceiling stains.
Why Montclair Residents Choose Us for CertainTeed Service
We work on the roofs Montclair actually has. That means 1950s and 1960s single-story tract homes, stucco-clad ranches on shallow pitches, and original wood shake or built-up sections that have been patched, layered, and re-covered over the decades. Most roofing contractors in the Pomona Valley see that and quote a full tear-off without climbing up to look. We’ll get on the roof, map the drainage, and tell you what’s actually failing. Alan’s approach comes from years of watching older Orange County houses lose their battle with deferred maintenance. “The roof tells you what went wrong. You just have to know how to read it.” That’s how we approach every Montclair job.
We work across the full Montclair service area, from the 91763 ZIP code’s older residential blocks to the commercial strips closer to Central Avenue. Because we stock common CertainTeed shingle profiles and Flintlastic membrane locally, we can match existing color and texture fast, without waiting on a regional supply house. And we’re honest about parts: genuine CertainTeed shingles and underlayment where the roof needs them, quality aftermarket flashing and fasteners where the original detail already failed and needs a better detail.
Styles & brands we work with






Common CertainTeed Roofing Problems We Solve in Montclair
- Granule loss and seal-strip bake-out on sun-blasted slopes. Montclair’s south and west roof faces get the full inland Pomona Valley summer, and after fifteen or twenty years of UV cycling, CertainTeed XT and Landmark shingles start shedding granules and losing their seal strips. The shingles look intact from the ground. They’re not. We check for granule buildup in gutters and downspouts as an early-warning sign.
- Wind uplift and edge-lift on older shingle fields. Santa Ana events rip through the San Gabriel foothills and hit Montclair’s west-facing roof edges hard. Older CertainTeed seal strips, already brittle from heat, lose their grip and ridge caps lift. We re-seal where the field is sound and re-flash edges where wind is driving water under the shingle laps.
- Ponding on low-slope and flat sections. This is the big one in Montclair. On low-pitch 1960s tract roofs, the shallow drainage paths and scuppers clog with foothill leaf litter and grit, and winter rain sits instead of running off. If you have CertainTeed Flintlastic or rolled low-slope membrane behind a clogged scupper, the standing water eventually finds a seam. We clear drainage first, then patch the membrane.
- Cracked underlayment and nail pops on layered roofs. Many Montclair homes have shingles laid over original built-up roofing or a second layer of shake. The felt underneath dries out, cracks, and the movement causes nail pops that back out through the shingle. A roof that looks wavy in the afternoon heat is telling you something about what’s underneath.
- Valley and flashing failures from decades of thermal movement. Montclair’s hot days and cool nights mean constant expansion and contraction at valleys, pipes, and chimney flashing. Old neoprene pipe boots crack, valley metal corrodes, and the resulting leak isn’t dramatic, just persistent. We re-flash and re-seal these details as a matter of course on every CertainTeed repair here.
CertainTeed Service in Montclair: What Local Conditions Mean for Your Roof
Montclair is fully built out. There’s effectively no new-construction roofing here, which means every CertainTeed job we do is a re-roof or a repair on housing stock installed between the Eisenhower and Carter administrations. That changes how you evaluate a roof problem. A new subdivision roof under warranty sees a manufacturer rep and a replacement check. A 1965 tract roof in Montclair sees us for CertainTeed service in La Verne and beyond, armed with a moisture meter and a drainage map. The single most common issue we find on low-pitch 1960s ranches is ponding after winter rains, not because the shingles are worn out, but because the scuppers and shallow drainage paths have packed with foothill leaf litter and grit. The water sits behind the clog, works into the Flintlastic laps, and shows up as a stain on the garage ceiling weeks later. Clearing drainage is part of every low-slope CertainTeed job we do in Montclair, and it’s the difference between a patch that lasts and a patch that fails next winter.
CertainTeed Models & Products We Service in Montclair
We service the full residential CertainTeed line. Landmark architectural shingles are the most common on Montclair’s re-roofed homes, and we match existing colors for repair work. XT 25 and XT 30 three-tab shingles show up regularly on the original 1960s and 1970s roofs still holding on. Flintlastic self-adhered low-slope roofing handles the flat and near-flat sections where Montclair’s ponding problems live. Presidential Shake and Carriage House designer shingles appear on some of the larger custom homes near the foothills. We stock common Landmark and Flintlastic profiles locally in the Montclair area for fast turnaround, and we order less-common designer profiles as needed. For flashing, fasteners, and edge details, we use quality aftermarket materials that outperform the originals, especially where wind uplift is a factor.
See the difference
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AfterCertainTeed Service Pricing in Montclair
CertainTeed repair pricing in Montclair varies with scope, access, and what we find under the shingles. A targeted shingle replacement or valley re-flash runs lower than a full tear-off, naturally, but the price on your roof depends on whether the decking below is sound. A free estimate includes a roof inspection, drainage assessment, and a written line-item quote so you see exactly what the job requires. We don’t pad estimates, and we don’t invent problems. If your roof has five more years in it, we’ll tell you that. If it’s done, we’ll show you why. Call (833) 589-7850 and we’ll come out and take a look.
Key Takeaways
- We’re an independent CertainTeed service provider, not authorized or sponsored by CertainTeed.
- We service Landmark, XT, Flintlastic, Presidential Shake, and Carriage House products on Montclair homes.
- Every low-slope CertainTeed job in Montclair includes drainage clearing; clogged scuppers are the root cause of most ponding.
- Repair is always evaluated before replacement. A re-flash or patch is often the honest fix.
- Free estimates include a full roof inspection and written line-item quote. Call (833) 589-7850.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and know this community well, and we also handle CertainTeed repair in Ontario. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – CertainTeed Roofing in Montclair
The shingles are probably not the problem. Montclair’s older tract homes have shallow drainage paths and scuppers that clog with foothill leaf litter and grit during the dry season. When winter rain comes, water can’t get off the roof fast enough, so it ponds behind the clogs. The first step is clearing the drainage, then inspecting the membrane underneath the ponding area for seam failures. Call (833) 589-7850 and we’ll check the drainage before anyone reaches for a full replacement bid.
We’ll tell you after we look at the decking. A patch and re-flash makes sense on a CertainTeed field that’s still granulated and sealed, even at 50-plus years old in some cases. But if the decking underneath has gone soft, or the shingles show widespread granule loss and bake-out, a full tear-off with new Landmark architectural shingles is the honest call. The inspection determines the answer. Call (833) 589-7850 for a free estimate and we’ll show you what’s actually up there.
Yes, and it’s about edge lift, not just missing shingles. Santa Ana winds coming off the San Gabriel foothills hit Montclair’s west and northwest-facing roof edges with sustained gusts. Older CertainTeed seal strips, already baked by inland heat, lose their grip and the wind works under the shingle laps, which is why we offer CertainTeed repair in Upland and surrounding areas. Ridge caps lift, and water gets driven sideways into the roof. We re-seal sound fields and upgrade ridge and edge fastening where wind uplift has become a pattern.
CertainTeed Flintlastic self-adhered membrane is the right product for flat and low-slope sections where standing water is possible. It’s a self-sealing, self-adhered system that handles the ponding conditions common on Montclair’s low-pitch 1960s roofs better than rolled asphalt or patched built-up roofing. We install Flintlastic on low-slope sections after clearing drainage, so the membrane isn’t sitting behind a clogged scupper the moment winter rains arrive.
No. Bedrock Roof Repair is an independent roofing contractor. We install and service CertainTeed products because we know them well and they perform on Montclair’s housing stock, but we are not authorized, sponsored, or endorsed by CertainTeed. That independence means our recommendation is based on what your roof actually needs, not on meeting a manufacturer’s sales quota or maintaining an authorization badge.
Service Areas Near Montclair
While we’re based to serve Montclair and the 91763 ZIP code, we also run CertainTeed service calls across the surrounding Pomona Valley and Inland Empire. You’ll find our crews on roofs in CertainTeed service in Claremont to the north, CertainTeed service in Duarte to the west, and throughout the communities in between. If you’re unsure whether we cover your street, call (833) 589-7850 and ask.
Book Your CertainTeed Service in Montclair Today
If you’ve got a stain on the ceiling, granules in the gutter, or a low-slope section that ponds every winter, don’t wait for the next rain to confirm the problem. Call (833) 589-7850 to schedule your free estimate. We’ll come out, get on the roof, and tell you what it actually needs.
Written by Alan Cofield, Owner at Bedrock Roof Repair, serving Montclair and the Pomona Valley with honest roof diagnosis, repair, and replacement.