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CertainTeed Construction in San Dimas, CA | Mason Remodeling Co West Covina
If you need CertainTeed roofing or siding work in San Dimas, we’re the crew to call: Mason Remodeling Co West Covina is an independent CertainTeed service provider, meaning we install and repair the brand’s products without any factory-authorization pretense. What makes our CertainTeed work different in San Dimas is that we understand the wildland-urban interface code north of Foothill Boulevard, where Class A fire-rated assemblies aren’t optional; they’re city law. From Landmark Pro shingles to Cedar Impressions siding, our crews have handled the specific ways CertainTeed materials perform – and occasionally fail – on hillside lots under the San Gabriel foothills sun. Call (707) 760-7579 for a free estimate, and we’ll send someone who knows this terrain.
Why San Dimas Residents Choose Us for CertainTeed Service

Here’s what matters when you’re picking a contractor for CertainTeed work: you want someone who knows the product, knows the town, and tells you the truth before any tool gets picked up. We’ve worked on CertainTeed roofing, siding, and insulation across San Dimas foothill homes for years. We know where Landmark Pro holds up and where it doesn’t. We know which supply houses in the area stock OEM bundles for fast turnaround. Isaac Pruett, our owner, grew up in Los Angeles and learned construction through the trade program at Los Angeles Trade-Technical College before spending decades on real jobs across the San Gabriel Valley. You should know what you’re getting before we ever pick up a tool. That’s how we operate.
We’re not a factory-authorized dealer, and we’ll never pretend to be. What we are is this: an independent remodeling and construction firm that has spent enough time on San Dimas roofs and walls to know the brand’s real-world behavior. You get a written price before work begins – not a verbal ballpark that grows on the final invoice. Every crew member arrives in a clean uniform, shows a photo ID badge at the door, and is introduced to you by name and photo before the visit. That’s the Threshold Standard, and it’s how every job runs.
Styles & brands we work with







Common CertainTeed Construction Problems We Solve in San Dimas
Here are the failure modes we see most often, tied directly to what San Dimas throws at a house:
- Granule loss on south-facing Landmark Pro slopes. San Dimas gets intense UV and dry heat, and the south-facing roof planes on foothill homes take the worst of it. We regularly see shingles where the granules have worn away so badly the fiberglass mat shows through, especially on the west-facing slopes that catch the afternoon sun off the hills.
- Cedar Impressions panels warping at butt joints. Reflected heat from hillside patios, retaining walls, and hardscape can push surface temperatures far above ambient. The vinyl siding expands and contracts, and older Cedar Impressions panels start to bow at the seams. It looks like a manufacturing flaw; it’s usually a San Dimas microclimate problem.
- Monogram siding pulling away at corners on settling hillside lots. Homes on slopes move. When a 1960s ranch built into the foothills settles, the siding gets pulled at the corners, and the CertaWrap underneath gets exposed. Wind gets behind it, and the problem compounds fast.
- CertaWrap tearing behind stucco during seismic retrofits. Older San Dimas ranch homes frequently need foundation and shear-wall work. When crews open walls for seismic upgrades, the weather barrier often tears. If it isn’t properly repaired or flashed, the wall leaks the next time a winter storm rolls through.
- Corroded flashing and gutter systems failing after winter runoff. The hillside behind a home directs water down and into the roofline. We’ve pulled off flashing on San Dimas homes that looked like Swiss cheese. Pairing a CertainTeed roof with gutters sized for heavy runoff isn’t an upsell; it’s the difference between a roof that lasts and a roof that leaks at the eaves.
CertainTeed Service in San Dimas: What Local Conditions Mean for Your Roof
Here is something you won’t find on a generic CertainTeed page or a generic San Dimas page. Unlike flatland cities in the San Gabriel Valley, San Dimas requires CertainTeed roof installations on hillside homes to comply with the city’s wildland-urban interface code. In practice, that means any roof north of Foothill Boulevard must be a Class A fire-rated assembly. Landmark Pro shingles on their own aren’t enough; they have to sit over a specific fire-resistant underlayment that meets the code. We’ve worked on plenty of two-story ranch homes off Calle Arroyo and the surrounding streets where the original CertainTeed roof was never installed to that standard. Homeowners call us because their shingles look shot, and we find the underlayment was the real problem from the start. If you’re buying or maintaining a home in the northern foothills, ask one question: was the roof installed to the city’s wildland-urban interface code? We can answer that, in writing, before you spend a dime on something you don’t need.
CertainTeed Models & Products We Service in San Dimas
Our crews work with the CertainTeed product lines most common on San Dimas homes. We install and repair CertainTeed sales & service products including Landmark Pro architectural shingles, Cedar Impressions polymer siding, Monogram vinyl siding, and CertaWrap weather-resistant barrier. We stock OEM Landmark Pro bundles and Cedar Impressions panels through local supply houses, which keeps color and wind-rating consistency on repairs. When a specific profile is discontinued or backordered, we use proven aftermarket equivalents for flashing and trim, and we tell you plainly whether a patch repair will blend or whether full replacement is the smarter call on a hillside that gets heavy runoff. No mystery. Just a straight answer.
See the difference
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AfterCertainTeed Service Pricing in San Dimas
| Service | Price Range |
|---|---|
| Roof Replacement (CertainTeed Landmark Pro) | $8,000 – $20,000 |
| Roof Repair (CertainTeed shingle replacement) | $400 – $1,800 |
| Specialty Roofing (metal or tile over CertainTeed underlayment) | $15,000 – $40,000 |
| Gutters & Accessories (with CertainTeed roofing project) | $800 – $2,500 |
Your price in San Dimas depends on roof pitch, access, the condition of existing sheathing, and whether the home sits in the wildland-urban interface zone requiring fire-resistant underlayment. Our free estimate includes a written, line-item quote. You get the number before any work starts, and that number is the number. Call (707) 760-7579 to schedule yours.
Serving San Dimas, CA - Our Local Coverage Area
We’re a San Dimas General Contractor based in the area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.


FAQs – CertainTeed Construction in San Dimas
Will CertainTeed Landmark Pro shingles hold up on a San Dimas hillside with intense afternoon sun?
Yes, Landmark Pro shingles perform well on San Dimas hillside homes, provided they’re installed over the correct fire-resistant underlayment required by the city’s wildland-urban interface code. The south and west-facing slopes take the most UV, so we recommend inspections every few years to catch early granule loss before the mat gets exposed. Call (707) 760-7579 and we’ll take a look for free.
Can you match existing CertainTeed Cedar Impressions siding on an older San Dimas ranch home?
Yes, we can match Cedar Impressions profiles when the product line is still in production, and we source OEM panels from local supply houses to keep the color and profile consistent. If your specific profile is discontinued, we’ll tell you before we order anything what your options are – a close aftermarket match or a broader replacement. Call (707) 760-7579 with your address and we’ll check availability.
My CertainTeed CertaWrap is visible behind failing stucco; do I need to replace the whole wall?
Not necessarily. CertaWrap visible behind cracked stucco means the barrier has been exposed to weather, but the fix often involves repairing the stucco, installing proper flashing, and patching or replacing only the damaged section of barrier. On San Dimas hillside homes, we always check for drainage issues behind the wall first, because that’s usually what caused the stucco to fail in the first place. Call (707) 760-7579 for a free wall assessment.
What’s the best CertainTeed roofing option for a San Dimas home in a wildfire zone?
For homes north of Foothill Boulevard in San Dimas, we recommend CertainTeed Landmark Pro shingles installed as part of a Class A fire-rated assembly with a fire-resistant underlayment that meets the city’s wildland-urban interface code. That combination gives you the brand’s wind and impact performance while satisfying the code requirement. Call (707) 760-7579 and we’ll confirm whether your roof currently meets that standard.
How do heavy winter rains affect CertainTeed shingle warranties on San Dimas hillside homes?
Heavy winter rains don’t void a CertainTeed shingle warranty on their own, but water intrusion caused by poor flashing, clogged gutters, or damaged underlayment won’t be covered by the manufacturer’s warranty; those are installation and maintenance issues. On San Dimas hillside homes, runoff from the slope behind the house puts extra stress on the eaves and gutters, so proper drainage sizing matters as much as the shingles themselves. Call (707) 760-7579 and we’ll check the whole system.
Service Areas Near San Dimas
In addition to San Dimas, we serve San Dimas service area neighborhoods and surrounding cities including West Covina, Pomona, Walnut, La Puente, and La Habra. If you’re nearby and need CertainTeed work, check out CertainTeed service in West Covina or CertainTeed service in Pomona for more on those areas.
Book Your CertainTeed Service in San Dimas Today
Our San Dimas crews are ready for Bathroom Remodeling in San Dimas and more. Call (707) 760-7579 for a free estimate, written line-item pricing, and straight answers about your roof or siding. We’ll send someone who knows this town’s hills, codes, and climate.
Written by Isaac Pruett, Owner at Mason Remodeling Co West Covina, serving San Dimas since 2004.











