CertainTeed Construction in Sherman Oaks, CA

CertainTeed Construction in Sherman Oaks, CA | Rowan Construction Group Sherman Oaks

We provide independent CertainTeed roofing and exterior system service across Sherman Oaks, from the Galleria corridor to the hillside parcels above the 405. The one thing that makes our CertainTeed work here different: we’ve spent years coordinating roof replacements with mandatory soft-story seismic retrofits on Moorpark Street and Van Nuys Boulevard, where the retrofit steel moment frames and roof deck repairs have to pass inspection in the same cycle. Call (213) 221-0788 to schedule your free estimate.

Call (213) 221-0788

Why Sherman Oaks Residents Choose Us for CertainTeed Service

We’ve installed and repaired CertainTeed systems across the San Fernando Valley since 2007, including hundreds of squares in Sherman Oaks alone. Grant Rowan, our owner, grew up in Los Angeles and studied construction technology at Los Angeles Valley College in Valley Glen before he ever swung a framing hammer on a paid job. He’s spent the better part of three decades doing construction work across the Valley, and Rowan Construction Group has served Sherman Oaks - including projects near the Galleria corridor and the residential streets off Ventura Boulevard - for several years running. Grant stays hands-on enough that he can tell when a subfloor isn’t sitting right just by walking across it. “Measure twice, write it down, then build it” - that’s how we approach every CertainTeed job.

We track CertainTeed’s regional bulletins and stock genuine accessories - starter strips, ridge caps, underlayment - for warranty-sensitive repairs. Where aftermarket fasteners and flashing outperform OEM for Valley heat and seismic movement, we use those instead and document the substitution in your written scope. Every project gets a flat written price before work starts, a signed change order for any modification, and a documented photo record as standard. Under Clause 1 of the Haven Standard, the price is written before anyone picks up a tool.

Our crews are background-checked and uniformed; a live person answers calls 24/7. The 365-Day Done Right Promise is printed on every contract, backed by a terms page, not an asterisk.

Common CertainTeed Construction Problems We Solve in Sherman Oaks

• Thermal cycling damage on Landmark PRO shingles. Sherman Oaks sits deep in the Valley’s heat basin, regularly hitting 100°F-108°F in summer - 15-20 degrees hotter than coastal LA. That temperature swing causes Landmark PRO shingle tabs to curl and sealant strips to soften, promoting wind uplift on west-facing slopes. We see this most often on ranch-style homes from the 1950s-1960s with original slab-on-grade foundations and minimal attic ventilation.
• NorthGate SBS underlayment failure on 1990s re-roofs. Original NorthGate SBS-modified bitumen underlayment installed after the 1994 Northridge earthquake has reached end of life across Sherman Oaks. The asphalt bleeds through, the granules wash off, and leaks develop around penetrations. We strip to deck, assess the substrate, and specify new underlayment matched to the replacement shingle system.
• Diamond Kote trim blistering in soft-story retrofit zones. In the dense grid of 1960s dingbat apartments along Moorpark Street and Van Nuys Boulevard, seismic movement from retrofit work opens stucco-to-framing joints. CertainTeed Diamond Kote prefinished fascia and trim show blistering and fastener pull-out where the structure flexes. We coordinate with the retrofit engineer to tie new trim into the seismic hardware.
• Presidential Shake TL impact cracking on hillside homes. Properties climbing toward Mulholland Drive fall within LA’s High Fire Hazard Severity Zones, where wind-blown debris and intense UV exposure cause impact cracking and surface chalking on Presidential Shake TL synthetic shake. Manufacturer literature written for coastal LA understates the maintenance frequency needed here.
• Granule loss accelerating on south-facing slopes. The Valley’s prolonged summer sun bakes CertainTeed asphalt shingles on exposures that get six-plus hours of direct radiation. Granule embedment loosens prematurely, exposing the asphalt mat and shortening service life. We specify heat-rated assemblies and improved ventilation when we replace these systems.

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CertainTeed Service in Sherman Oaks: What Local Conditions Mean for Your Equipment

Sherman Oaks has one of the Valley’s densest concentrations of 1960s dingbat soft-story apartments along Moorpark Street and Van Nuys Boulevard, where mandatory retrofit work constantly opens exterior walls. This creates a construction sequencing problem that generic CertainTeed contractors from outside the area rarely anticipate: the seismic strengthening crew installs steel moment frames and plywood shear walls, then the roofing and stucco trades have to integrate new CertainTeed roofing, Diamond Kote trim, and weather barriers around hardware that wasn’t in the original 1962 drawings. We’ve learned to read the retrofit engineer’s plans before we spec the roof assembly, because the moment-frame connection plates often penetrate the fascia line and require custom flashing. If you’re also considering Kitchen Remodeling in Sherman Oaks, we can coordinate both projects to avoid conflicts with the same structural elements. On a 1962 dingbat on Moorpark Street, our crew tore off a failed 20-year-old CertainTeed Landmark roof and found the original NorthGate underlayment had bled through, rotted the fascia, and pulled away from the retrofit steel moment frames below. We installed new CertainTeed Landmark PRO shingles with Diamond Kote fascia tied into the seismic hardware, then flashed the open tuck-under columns to stop water intrusion - passing both the retrofit and roofing inspections in one cycle. That kind of coordination saves Sherman Oaks property owners a second permit cycle and weeks of delay.

CertainTeed Models & Products We Service in Sherman Oaks

We work with the full CertainTeed residential roofing and exterior system catalog, with particular depth on the product lines that perform under Valley conditions. CertainTeed sales & service through our operation covers:

• Landmark PRO - dimensional asphalt shingle, most common on Sherman Oaks ranch homes; we stock matching starter strips and ridge caps for color-consistent repairs.
• Presidential Shake TL - synthetic shake for hillside custom homes in the High Fire Hazard Severity Zone; we source replacement tiles individually for impact-damaged sections.
• NorthGate SBS-modified bitumen underlayment - the 1990s standard now aging out; we remove and replace with current-spec ice and water shield or synthetic underlayment depending on slope and exposure.
• Diamond Kote prefinished trim and fascia - specified for soft-story retrofits where color match to existing stucco is required; we coordinate cut lengths with the seismic hardware layout.

Genuine CertainTeed accessories for warranty-sensitive repairs are stocked locally for fast Sherman Oaks turnaround. Where proven aftermarket fasteners and flashing outperform OEM for heat expansion and seismic flex, we document the substitution in your written scope - no surprises, no hand-waving.

CertainTeed Service Pricing in Sherman Oaks

FAQs - CertainTeed Construction in Sherman Oaks

Does CertainTeed make a shingle rated for Sherman Oaks’ 100°F+ summers?

Yes. The Landmark PRO line carries a Class A fire rating and is formulated for national installation, but in Sherman Oaks we specify it with enhanced attic ventilation and, on south-facing slopes, heat-reflective underlayment to manage the 15-20 degree temperature premium over coastal LA. Call (213) 221-0788 to discuss your exposure.

Can you install a CertainTeed roof while my dingbat soft-story retrofit is still open?

Yes, and in many cases that’s the preferred sequence. We coordinate with your retrofit engineer to tie CertainTeed Diamond Kote fascia and roof edge flashing into the steel moment frames before the stucco crew closes the walls. Many property owners pair this with Bathroom Remodeling - Sherman Oaks to complete their full renovation in one coordinated schedule. Doing both inspections in one permit cycle saves time and avoids cutting into finished work later.

What CertainTeed underlayment do you use under tile or metal roofing in Sherman Oaks?

For tile and metal applications we specify CertainTeed’s current synthetic underlayment or SBS-modified ice and water shield, depending on slope and code requirements. We do not install new NorthGate SBS on new work - that product is end-of-life and we remove it when we encounter it on tear-offs.

How does Sherman Oaks’ High Fire Hazard Severity Zone affect CertainTeed roofing choices?

Properties above the 405/101 interchange fall within LA’s High Fire Hazard Severity Zones, requiring fire-resistant construction assemblies under the LAMC. CertainTeed Landmark PRO and Presidential Shake TL both carry Class A ratings, but assembly details - underlayment, edge metal, and penetration flashing - must meet the enhanced standard. We pull the permit and schedule the inspection; the scope includes every assembly component required for sign-off. Call (213) 221-0788 for a line-item quote.

Do you repair CertainTeed Presidential Shake that has cracked from Valley heat?

Yes. We source individual Presidential Shake TL tiles for impact and thermal cracking, matching color lots where possible. If more than 30% of the field shows damage, we recommend full replacement - repeated patch work on a heat-stressed roof costs more long-term. Call (213) 221-0788 and we’ll photograph the damage and give you both options in writing.

Service Areas Near Sherman Oaks

Rowan Construction Group serves Sherman Oaks service area homeowners and property managers from our Valley base. We also handle CertainTeed service in Van Nuys, CertainTeed service in Encino, and work in Studio City, North Hollywood, and Beverly Hills. The seismic retrofit and heat-cycling expertise we’ve developed in Sherman Oaks applies directly across these neighboring communities.

Book Your CertainTeed Service in Sherman Oaks Today

Call (213) 221-0788 to schedule your free CertainTeed estimate in Sherman Oaks. We’ll bring a documented photo record, a written line-item price, and the 365-Day Done Right Promise. Grant Rowan and our crew have handled the Valley’s heat, its seismic retrofit sequencing, and its hillside fire-zone assemblies for years. Let’s measure twice, write it down, then build it.

Written by Grant Rowan, Owner at Rowan Construction Group, serving Sherman Oaks since 2007.