Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Replacement Across Westmont
Most Westmont homeowners don’t think about Roof Repair – Westmont until water spots bloom on the ceiling after a Santa Ana wind event or the June gloom finally lifts and they notice half their shingles curled like potato chips. A full roof replacement in Westmont typically runs $12,500 – $28,000 depending on square footage, pitch, and material choice, and most jobs wrap in 2 – 4 days once materials arrive. We’re Crestview Roofing, part of the Relay Home Co. family since 2000, and our crews work Westmont regularly from dispatch out of our Los Angeles office. Call (325) 246-5075 to schedule your free estimate with a written price before any work starts.
We know the housing stock here. Westmont’s mix of 1940s California bungalows near Century Boulevard, the postwar tract homes tucked between Western Avenue and Vermont, and the newer builds closer to the 110 freeway each present different decking conditions, ventilation challenges, and permit requirements through the City of Los Angeles. That’s not generic knowledge. It comes from walking actual Westmont roofs, pulling permits for actual Westmont addresses, and learning which blocks still have original one-by roof decking that needs full replacement versus newer plywood substrate.
Why Crestview Roofing Is Westmont’s Preferred Roof Replacement Company
Our reputation in Westmont was built one visible job at a time. Neighbors see our crews on Century Boulevard or along Normandie, notice the uniformed technicians and the branded trucks, and ask the homeowner who showed up when promised. Word spreads fast in a community this tight.
We answer calls with a live person, 24/7. No voicemail loops, no “call back Monday” when your tarp is flapping at 10 p.m. on a Saturday. That matters in Westmont, where many residents commute to downtown L.A. or the South Bay and need scheduling that respects their hours, not ours.
Every Roof Replacement we perform comes with The Relay Visibility Guarantee: written price locked before work begins, live trackable arrival time, before-and-after photo documentation sent to your phone, and a digital invoice by text. Our 365-Day Done Right Promise covers every repair for a full year in writing, including a free second visit if anything fails. Background-checked, uniformed technicians mean you know exactly who’s pulling into your driveway before they get there.
New Roof Installation in Westmont
New Roof Installation in Westmont covers first-time roofing on additions, new construction, or garage conversions where no existing roof system is in place. Most Westmont new installations fall between $14,000 and $32,000, with basic dimensional shingles on a standard 1,800-square-foot home starting near the lower end and premium architectural systems or complex pitches pushing toward the higher range. We pull all permits through the City of Los Angeles, coordinate inspections, and handle the T24 energy compliance documentation that’s required on any new roof assembly in California.
Decking and Structural Prep
Westmont’s older pockets, especially the blocks near Century Boulevard built in the 1920s and 1930s, often have one-by skip sheathing or spaced boards beneath the old roof covering. New Roof Installation requires solid decking substrate, so we inspect and quote any needed plywood replacement upfront, not as a surprise add-on once shingles are torn off.
Ventilation and Attic Airflow
Proper intake and exhaust ventilation extends shingle life significantly in Westmont’s climate, where summer attic temperatures can exceed 150°F. We calculate net free ventilation area to manufacturer specs and install ridge vents, soffit vents, or mechanical options as the roof design allows.
Reroofing in Westmont
Reroofing in Westmont means removing your existing roof system down to the deck, inspecting for hidden damage, and installing a complete new assembly with updated underlayment, flashings, and ventilation. Most Westmont reroofing projects run $12,500 – $28,000 for standard asphalt or architectural shingle systems, with flat roofing on low-slope sections adding $8,000 – $18,000 depending on membrane choice and square footage. We don’t do overlay jobs, and we don’t recommend them for Westmont homes, the building code and manufacturer warranties both require full tear-off for a valid wind and algae warranty.
Tear-Off and Disposal
Our crews handle all debris hauling and recycling. Asphalt shingles go to designated processing facilities, not dumped on vacant lots. For Westmont jobs near dense housing along Western or Vermont, we use protective ground coverings and magnet sweepers to protect your property and your neighbors’.
Flashing Replacement and Detail Work
Pipe boots, chimney flashings, and wall step flashings are common failure points on Westmont homes where original installations used galvanized steel that’s now rusted through. We replace all penetration flashings during reroofing, not just the field shingles, using color-matched aluminum or copper where specified.
Trusted Brands We Service in Westmont
We install GAF Timberline HDZ, CertainTeed Landmark, Owens Corning Duration, Atlas StormMaster Slate, and Tamko Heritage series shingles on Westmont homes, with Boral concrete tile for homeowners matching Spanish or Mediterranean architecture. Our Los Angeles warehouse stocks common colors and accessories for these brands, so material lead times for standard Westmont jobs typically run 3 – 5 business days rather than the 2 – 3 weeks common with special-order products. Every installation carries the full manufacturer warranty plus our own 365-Day Done Right Promise on workmanship. We also handle Roof Installation in Westmont for new construction and additions using these same manufacturer-backed systems.
Common Roof Replacement Problems We See in Westmont Homes
- Santa Ana wind uplift on south-facing slopes. Westmont’s position inland from the L.A. Basin means sustained Santa Ana winds hit roof edges hard, especially on homes near the 110 corridor. We see lifted shingles, broken seals, and creased tabs that look fine from the ground but leak during the next rain.
- Original clay tile over deteriorated felt. The Spanish-style homes near Century Boulevard and Normandie often have 80-year-old clay tile in decent shape but rotted 15-pound felt underneath. Full replacement means saving salvageable tile, replacing felt with modern synthetic underlayment, and reinstalling with proper batten spacing.
- Flat roof ponding on garage additions. Many Westmont garages were converted or expanded in the 1970s with minimal slope. Water sits, seams fail, and interior drywall stains appear. We install tapered insulation or crickets to create positive drainage during replacement.
- Inadequate attic ventilation trapping summer heat. Westmont’s combination of older insulation and blocked soffits creates attic temperatures that cook shingles from underneath. We address this during replacement with calculated intake and exhaust ventilation, not just a ridge vent slapped on top.
Pricing for Roof Replacement in Westmont, CA
Most full roof replacements in Westmont fall between $12,500 and $28,000 for asphalt or architectural shingle systems on typical single-family homes. Here’s how that breaks down by component:
- Asphalt 3-tab shingles: $12,500 – $18,000
- Architectural dimensional shingles: $16,000 – $24,000
- Premium designer shingles: $22,000 – $28,000
- Flat/low-slope membrane replacement: $8,000 – $18,000
- Roof decking replacement (per sheet): $85 – $140
- Chimney flashing rebuild: $650 – $1,400
What moves you within these ranges? Roof pitch (steeper = more labor), accessibility (power lines, tight side yards), decking condition, and whether we need crane service for material delivery on tight Westmont lots. Every quote we provide is a written, line-item price. The number on the page is the number on the invoice. No change orders unless you add scope. Call (325) 246-5075 for your free estimate.
We Also Serve Cities Near Westmont
Our crews work throughout the greater Los Angeles metro and travel statewide for larger projects. If you’re searching from nearby, we also provide Roof Replacement in Westmont and surrounding communities including Los Angeles, San Diego, San Jose, and San Francisco. Scheduling and dispatch are coordinated from our Los Angeles office with local crews deployed to each market.
Serving Westmont, CA – Our Local Coverage Area
We’re based in the Westmont 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 About Roof Replacement in Westmont
We typically schedule free estimates in Westmont within 1 – 3 business days, and most roof replacements begin 1 – 2 weeks after contract and material delivery. Call (325) 246-5075 to check current availability, estimates are free.
Yes, we work across Westmont including the areas near Century Boulevard, the blocks between Western Avenue and Vermont Avenue, and the residential streets closer to the 110 freeway corridor. Our crews know the local permit requirements and inspection schedules for each zone.
We provide emergency tarping and temporary weatherproofing to stop active leaks, but full roof replacement is planned work that requires permitting, material ordering, and scheduled crew deployment. For sudden damage, call (325) 246-5075 and we’ll secure the roof immediately, then schedule replacement.
Westmont pricing tracks closely with central Los Angeles County averages, slightly below beach cities where access and parking add labor cost, and comparable to similar inland communities. Material and labor rates are regional, your specific roof size and condition matter more than zip code.
Every Westmont roof replacement includes the full manufacturer material warranty, 5 – 10 years on standard products and up to 50 years on premium systems, plus our 365-Day Done Right Promise covering workmanship. If any covered repair fails within 365 days, we fix it free, including a free second visit if needed. Call (325) 246-5075 for written warranty details specific to your material choice.
Ready to price your roof replacement? Call (325) 246-5075 to schedule your free estimate. You’ll get a written, line-item price before any work starts, a live trackable arrival time, and photo documentation of every phase. That’s The Relay Visibility Guarantee, and it’s how we’ve worked since 2000.
Written by Dylan Pace, Owner at Crestview Roofing, serving Westmont and the greater Los Angeles area since 2000.






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