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CertainTeed Roofing in Monrovia, CA | Hollywood Roofing Co
Hollywood Roofing Co handles CertainTeed roof repair and full replacement across Monrovia and nearby communities, including Mayflower Village CertainTeed service, the 91016 and 91017 ZIP codes. We service Landmark, Presidential Shake, and Flintlastic systems on everything from Old Town Craftsman bungalows to hillside homes above Foothill Blvd. What sets our CertainTeed work apart in Monrovia is that we factor the canopy of live oaks and deodar cedars into every inspection, because shaded north slopes here age shingles faster than any spec sheet will tell you. Call (833) 589-7971 to schedule a roof inspection.
Why Monrovia Residents Choose Us for CertainTeed Service
We’ve spent years stripping and reinstalling CertainTeed Landmark, Presidential Shake, and Flintlastic assemblies off Monrovia roofs. We know how these products actually hold up on a 1920s bungalow with a north-facing slope under thirty feet of oak canopy, because we’ve seen it. Roland Vega, our owner, grew up in Los Feliz and learned roofing at Los Angeles Trade-Technical College. He’s spent nearly three decades working roofs across Hollywood, Duarte CertainTeed service areas, and the San Gabriel foothills, and the one thing he’ll tell you about Monrovia is that a roof shaded by deodar cedars behaves differently than one baking in full sun two miles away. We’re an independent CertainTeed service provider, not authorized or endorsed by CertainTeed, which means our recommendation is based on what your deck and exposure actually call for, not what a supplier wants moved this quarter. When you call us, you get that straight.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Monrovia
- Moss and algae on shaded north slopes. Under live oak and deodar canopy, CertainTeed architectural shingles stay damp through winter and never fully dry in summer. The result is moss, algae streaks, and granule loss that runs years ahead of the sun-exposed south slope. We strip, treat, and re-roof with upgraded CertainTeed underlayment rated for shaded exposures.
- Santa Ana wind damage at the perimeter. Wind events peel CertainTeed ridge caps and rake-edge shingle tabs on exposed foothill ridgelines above Old Town while the field shingles remain intact. The failure is almost always at the edge, not in the middle. We inspect the full perimeter after every major wind event and re-secure or replace loose tabs before they become a bigger tear.
- Multi-layer waviness on pre-war bungalows. On 1900s to 1940s Craftsman homes, a CertainTeed shingle is often the third layer over original wood shake on solid sheathing. The symptom isn’t a missing shingle. It’s a wavy, humped roof plane and popped nails. The only durable fix is a full tear-off to deck and a clean reinstalled assembly.
- Failed tile underlayment under healthy-looking clay or concrete tile. We regularly find CertainTeed felt underlayments that have dried out and torn at valleys and penetrations while the tile above still looks fine. Water shows up inside, far from any visible tile damage. Patching over failed felt just moves the leak. We replace the underlayment system properly.
- Rusted valley metal feeding ceiling stains. On older Monrovia homes, moss-packed valleys hold moisture against the metal until it rusts through. Combined with failed underlayment, this sends water into the ceiling below while the shingle field above looks serviceable. We re-detail valleys with new metal and CertainTeed underlayment, then match the shingles.
CertainTeed Service in Monrovia: What Local Conditions Mean for Your Roof
If you live in the historic neighborhoods near Old Town in Monrovia, a re-roof that’s visible from the street can trigger a preservation review. That changes how we spec a CertainTeed job. On a Craftsman or bungalow roof, we often have to document the existing CertainTeed profile and color, then match it in kind rather than defaulting to whatever shingle is currently in the catalog. A homeowner who wants Landmark Pro in a modern color can usually have it on the back slope, but the street-facing elevation may need to stay consistent with the home’s original character. That’s not a problem; it’s just something you plan for. Roland has handled enough of these reviews to know what the preservation board wants to see, and we prepare the documentation so the process moves without surprises. This is a Monrovia-specific reality, not something you’d run into the same way in Glendale or Pasadena, and it’s one reason we treat every foothill and Old Town roof as its own project rather than a template job.
On a 1920s Craftsman near Old Town in the 91016 flats, we were called for a ceiling stain and found CertainTeed Landmark shingles laid over an older shake layer on the shaded north slope. Moss-packed valleys and rusted-through valley metal were feeding the leak. We stripped to solid sheathing, replaced the soft deck boards, re-detailed the valleys with new metal and CertainTeed underlayment, and finished with Landmark shingles matched to the street-visible color. The front slope read consistently through the preservation review, and the homeowner got a roof that will actually dry out now.
CertainTeed Models & Products We Service in Monrovia
We service the full CertainTeed product range you’re likely to find on Monrovia homes. Landmark architectural shingles, including Landmark Pro, are the most common. Presidential Shake and Presidential TL luxury shingles show up on hillside estates and higher-end remodels. Flintlastic modified bitumen covers low-slope and flat sections, which you’ll see on mid-century additions and porch roofs. We also work with CertainTeed clay and concrete tile underlayment systems. For parts, we match CertainTeed-brand shingles, underlayments, and accessory flashings wherever a current-production match exists. When a repair would mean patching over failed original felt, we’ll say so and recommend the full fix instead. On steep shaded slopes, we favor upgraded CertainTeed underlayments and ice-and-water at valleys and eaves rather than a bare-minimum felt job. Learn more about our CertainTeed sales & service experience and what we carry.
See the difference
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AfterCertainTeed Service Pricing in Monrovia
Most CertainTeed repair work in Monrovia falls into predictable ranges. A simple shingle replacement or flashing repair runs $350 to $900, depending on access and the condition of the underlayment. Re-racking a valley or replacing a section of failed underlayment lands between $900 and $2,500. A full CertainTeed re-roof on a typical Monrovia bungalow runs $11,000 to $19,000, and on a larger foothill home with Presidential Shake or steep slopes, $19,000 to $35,000 is realistic. What moves the number most is whether we’re looking at a single layer or a multi-layer tear-off, and whether a preservation review requires matching a specific profile. Every estimate includes a written line-item breakdown. Call (833) 589-7971 and we’ll walk your roof with you and give you real numbers, not a range pulled from a national database.
Serving Monrovia, CA — Our Local Coverage Area
We’re based in the Monrovia area and know this community well, along with CertainTeed in Bradbury and surrounding foothill towns. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – CertainTeed Roofing in Monrovia
It may. Monrovia’s historic neighborhoods near Old Town can trigger a preservation review when a re-roof is visible from the street, and that review may require matching the existing CertainTeed profile and color rather than switching to a different shingle style. We prepare documentation for this and have handled enough of these reviews to guide you through it. Call (833) 589-7971 and we’ll tell you whether your address falls into that category.
In Monrovia, north-facing slopes sit under live oak and deodar cedar canopy and stay damp through winter, which promotes moss, algae streaks, and granule loss that runs well ahead of the sun-blasted south slope. The shingles aren’t defective. They’re holding moisture longer than they were designed to. The fix is often an upgraded CertainTeed underlayment and improved drainage, not just a shingle swap. Call (833) 589-7971 to have us take a look.
We won’t recommend it on most Monrovia homes. Many pre-war bungalows are already on second or third layers, and adding another layer hides the real condition of the sheathing and underlayment. You end up with a wavy roof plane, popped nails, and a shortened service life. We’ll only re-roof over an existing layer when the deck is clean, the underlayment is sound, and the existing layer count allows it. Most of the time, a tear-off is the honest fix. Call (833) 589-7971 for a straight answer on your specific roof.
That’s a classic Monrovia failure mode. CertainTeed felt underlayments under clay or concrete tile dry out and tear at valleys and penetrations long before the tile itself shows any damage. Water travels under the tile, finds the tear, and shows up inside far from any visible problem. Patching tile won’t fix it. The underlayment system has to come up and be replaced. Call (833) 589-7971 and we’ll trace it for you.
Yes, and the damage pattern is specific. On exposed foothill ridgelines above Old Town and into Arcadia CertainTeed service areas, Santa Ana winds peel CertainTeed ridge caps and rake-edge shingle tabs while the field shingles hold. The failure is at the perimeter, not the middle. Homes down on the flats get far less of this. If you’re on a ridgeline, an annual perimeter check after wind season is cheap insurance. Call (833) 589-7971 to schedule one.
Service Areas Near Monrovia
We also provide CertainTeed service in surrounding communities. That includes CertainTeed service in Bellflower and CertainTeed service in West Carson, along with work in Universal City, Studio City, and Glendale. Our full coverage area is listed on our Monrovia service area page.
Book Your CertainTeed Service in Monrovia Today
Whether it’s a leaking valley on a shaded bungalow or a full re-roof above Old Town, we’ll inspect first and recommend only what your roof actually needs. Call (833) 589-7971 to schedule a roof inspection or a free estimate today.
Written by Roland Vega, Owner at Hollywood Roofing Co, serving Monrovia since bringing his roofing experience to the San Gabriel foothills from his Los Feliz roots. A roof doesn’t ask for much, just that you pay attention before it has to ask loudly.