Southern California Roofing Contractor
Get a Full Roof Replacement —
Done Right the First Time.
Full roof replacements with transparent pricing, no in-home sales inspection required to get your price, and fast scheduling — built for homeowners who want it done right without the runaround.
Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.
- Golden Pledge®-eligible GAF roofing systems
- Fully documented installations
- No shortcuts — ever
Get Instant Estimate
Precise aerial measurement data
Instant Roof Estimator
Enter your property address to get a fast ballpark estimate using precise aerial measurements. No site visit required. No phone call needed.
The instant result is a preliminary budget estimate based on aerial data. We follow up with a detailed written quote for your specific home — no in-person inspection or sales appointment required.
Want a precise written quote?
Request Detailed QuoteMost roof failures don't happen suddenly — they come from small issues that get worse over time. Replacing early prevents structural damage, insulation issues, and interior leaks.
We are not a general roofing company. We specialize in full roof replacements done to manufacturer system standards — not shortcuts.
Why Westmark
A Different Kind of Roofing Company
We eliminated everything homeowners hate about the typical contractor experience — and built the process they actually want.
Fast Digital Estimates
Enter your address and get a ballpark price in about 60 seconds from aerial roof data — no appointment, no salesperson at your door, no phone call required.
Complete Systems, Not Shortcuts
Every roof is installed as a complete manufacturer-matched system — the underlayment, leak barriers, flashings, and ventilation that actually keep water out — built to the spec required for an enhanced manufacturer warranty. No generic materials, no skipped layers.
Clean, Protected Job Sites
We haul debris the same day and finish with a magnetic nail sweep of your entire yard and driveway — so the only thing left behind is your new roof.
One Point of Contact
You deal with the owner from first quote to final walkthrough — not a commissioned rep, then a scheduler, then a crew nobody told you was coming. One person accountable for the whole project.
What We Specialize In
Built for One Thing — Done Right.
We are not a general roofing company. We specialize in complete residential reroofing projects — full asphalt and DaVinci replacements and qualifying tile lift-and-relay projects — done to manufacturer and code requirements.
We Do
- Full asphalt & DaVinci roof replacements
- Qualifying tile lift-and-relay projects
- Long-term, warranty-eligible systems
- Clean, itemized written pricing
We Don't
- Isolated patch repairs
- Commercial roofing
- New tile or metal roof systems
- Same-day-close pressure tactics
Where We Focus
Why We Only Do Complete Reroofs
A patch fixes what you can see. A complete reroof fixes what you can't — the underlayment, flashings, and ventilation that actually determine how long a roof lasts. It's also the only way to qualify for an enhanced manufacturer warranty, which requires a full, spec-compliant system installed by a certified contractor.
If your roof genuinely needs a repair instead of a replacement, we'll tell you — even when that means the job isn't ours.
What's Actually At Stake
What Happens When a Roof Is Installed Wrong
The damage from a bad install often doesn't show up for years — and by then, the contractor is long gone.
Leaks Within 2–5 Years
Skipped leak barriers and reused flashings let water in long before the shingles are worn.
Mold + Insulation Damage
Slow leaks soak attic insulation and decking, leading to mold remediation costs that dwarf the original install.
Warranty Denial
Manufacturers deny coverage when installations don't meet spec. The warranty you paid for stops protecting you.
Higher Long-Term Cost
What looked like a deal up front becomes the most expensive roof you ever bought once you factor in the do-over.
Most homeowners don't realize this until it's too late. The right time to find a real contractor is before the next install — not after the next leak.
Honest Fit Check
Are We the Right Fit for Your Project?
We'd rather tell you up front than waste your time. Here's who we're built for — and who we're not.
We're a good fit if
- You want a full roof replacement done right — not a patchwork repair.
- You care about long-term performance and warranty coverage, not just lowest bid.
- You want a clean, professional, written-quote process from start to finish.
- You value a single point of contact and clear communication throughout.
- You're staying in the home long enough for the install quality to actually matter.
We're not a good fit if
- ×You're shopping for the absolute cheapest bid in the market.
- ×You want a quick patch or partial repair instead of a full replacement.
- ×You want a contractor willing to skip leak barriers, ventilation, or flashings to hit a number.
- ×You're looking for commercial roofing, repairs, or solar-panel installation.
- ×You want a same-day-close pressure pitch at the kitchen table.
If we're not the right fit, we'll say so. That's the kind of conversation we'd rather have on the front end.
The Process
How Your Roof Gets Replaced — Step by Step
No skipped steps. No shortcuts. No surprises halfway through your project.
Instant Estimate (60 seconds)
Enter your address. We use precise aerial measurements to generate a fast ballpark in under a minute — no salesperson at your door.
Detailed Aerial Review + Itemized Quote
We follow up with a written, line-item quote that lists every system component, based on precise aerial measurements of your property.
Tear-Off, Deck Inspection + Installation
Crew arrives on time. Full tear-off, deck inspection, system installation per manufacturer spec. Most projects complete in 1–3 days.
Final Walk-Through + Warranty Registration
We walk the finished roof with you, confirm everything is right, clean the site completely, and register your manufacturer warranty.
Roofing Systems
Good, Better, Best
Every option is a complete manufacturer-matched system — not just shingles.
Most homeowners choose based on how long they plan to stay in the home — not just price.
GAF Timberline HDZ® in Barkwood — GAF product photo
Architectural Asphalt System
GAF Timberline HDZ
Warranty
GAF Golden Pledge included
Premium architectural asphalt at the strongest value
Homeowners who want a proven, complete GAF system with full enhanced warranty coverage at the best price point.
- Complete GAF system — not just shingles
- GAF Golden Pledge: lifetime material, labor & workmanship
- Class A fire rated
- Most installed shingle in North America
GAF Grand Sequoia® in Mesa Brown — GAF product photo
Designer Asphalt System
GAF Grand Sequoia
Warranty
GAF Golden Pledge included
Premium dimensional profile with upgraded curb appeal
Homeowners who want the rich, cedar-shake look of a designer dimensional shingle on a complete GAF system.
- Premium dimensional wood-shake profile
- Complete GAF system — not just shingles
- GAF Golden Pledge: lifetime material, labor & workmanship
- Class A fire rated
DaVinci synthetic shake — DaVinci Roofscapes product photo
Premium Synthetic System (DaVinci)
DaVinci Select Shake / Province Slate
Warranty
Limited Lifetime Material Warranty
Premium synthetic shake or slate with low-maintenance longevity
Homeowners who want a true premium aesthetic — synthetic shake or slate — with Class 4 impact protection and minimal maintenance.
- Class A fire + Class 4 impact rated
- Color stability + low moisture absorption
- Installed to DaVinci's specifications
- DaVinci Limited Lifetime Material Warranty
Have a concrete or clay tile roof? Ask about tile lift & relay — new underlayment beneath your existing tiles.
Colors & Design
Find the Right Color for Your Home
From Title-24 cool-roof shades to the full standard palette — see the complete GAF Timberline HDZ® and Grand Sequoia® color range and check what your climate zone requires.
Manufacturer renderingCharcoal
Timberline HDZ® Reflector Series™
Manufacturer renderingHickory
Timberline HDZ® Reflector Series™
Manufacturer renderingCoastal Slate
Timberline HDZ® Reflector Series™
Manufacturer renderingSandalwood
Timberline HDZ® Reflector Series™
Images are GAF product renderings shown for color reference — not photos of Westmark projects.
Full Roof Replacements | Solar Integration
Coming SoonTimberline Solar™ —
Coming Soon.
We're bringing GAF Timberline Solar™ to Westmark Roofing — a solar roof that installs like shingles and generates clean energy, all from a single trusted contractor. This service is launching soon. If you're planning a roof replacement and want solar as part of it, let us know when you request your estimate and we'll keep you posted as soon as it's available.
- Solar shingles install flush with the roof — no rack mounts
- Roof and solar covered under one GAF system warranty
- No standalone solar — no third-party installers
Coming soon — solar offered exclusively as part of a full roof replacement
Solar built into your roof using GAF Timberline Solar — no standalone solar, no third-party installers. Launching soon.
Common Questions
Clear answers before you even have to ask.
Replace Your Roof — Done Right the First Time.
Written quotes, not verbal ranges. Full-system installs, not shortcuts. No pushy sales tactics.
Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.