GAF product renderingRoof Replacement
Full Roof Replacement —
Built to Last Decades
Complete residential roof replacement across San Diego County, Orange County, and the Inland Empire. We install full systems — tear-off, deck inspection, underlayment, leak barriers, ventilation, flashings, and field shingles — to manufacturer spec.
Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.
Why It Matters
Why a Full Replacement Outperforms Repairs
Repairs can be appropriate for isolated damage on an otherwise serviceable roof — but they don't reset the aging system underneath. A complete roof replacement is the only way to reset the clock on the entire system.
Resets the Whole System
New deck-to-ridge — underlayment, leak barriers, ventilation, and flashings all replaced together so nothing is left behind to fail later.
Restores Manufacturer Warranty
Only complete, spec-compliant installations qualify for enhanced manufacturer warranties like the GAF Golden Pledge.
Catches Hidden Damage
Tear-off exposes the deck — rot, prior leaks, and damaged sheathing get repaired before the new system goes down.
Improves Ventilation
Most older roofs run unbalanced ventilation. A replacement is the right time to fix it — adding years to the new system's life.
Better Energy Performance
Modern underlayments and balanced ventilation reduce attic temperatures and ease HVAC load through SoCal summers.
Long-Term Cost Wins
When a roof is at the end of its service life, one complete system installed correctly can beat a string of repairs that don't address the underlying problem.
Signs It's Time
Signs It May Be Time to Replace Your Roof
If two or more of these are true, a full replacement estimate is worth getting — even just to know where you stand.
20+ Years Old
Most asphalt systems start failing after 20–25 years.
Curling, Cupping, or Missing Shingles
Visible degradation usually means the field is past its service life.
Granule Loss in Gutters
Heavy granule shedding signals end-of-life shingle wear.
Repeat Leaks or Stains
Recurring leaks usually mean the underlying system has failed, not just the surface.
Daylight Through the Decking
Visible deck damage in the attic means tear-off is overdue.
Sagging or Soft Spots
Structural deck issues will only get worse with another patch job.
Ready to start your roof replacement?
Start with the instant estimate, then we'll follow up with a precise written quote based on a full aerial measurement of your home.
What's Included
What's Included in Every Westmark Replacement
Every project is installed as a complete manufacturer-matched system — not a shingles-only bid.
Complete Tear-Off
Down to the deck. No layovers.
Deck Inspection & Repair
Damaged sheathing replaced before underlayment goes down.
Synthetic Underlayment
Modern synthetic underlayment — not old 30-lb felt.
Leak Barriers
Ice & water shield at valleys, eaves, and penetrations.
New Flashings
All flashings replaced — never reused.
Balanced Ventilation
Engineered intake and exhaust sized to your attic.
Manufacturer-Matched Field Product
GAF or DaVinci installed to manufacturer spec.
Ridge & Hip Components
Matching ridge caps and hip components — finished cleanly.
Site Cleanup & Magnetic Sweep
We leave the property cleaner than we found it.
Example Project Scenarios
What a Real Westmark Project Looks Like
Below are example project scenarios — representative of the kind of work we do across Southern California — to help you picture what your project might look like.
San Diego — Coastal Asphalt Replacement
Aging 22-year shingle roof with marine-layer wear and minor deck damage. Complete tear-off and deck repair, then GAF Timberline HDZ installed as a full GAF system with corrosion-resistant flashings — GAF Golden Pledge included.
Newport Beach — DaVinci Synthetic Shake
1990s home with failing wood shake, replaced with a premium synthetic system. DaVinci Select Shake in a custom color blend — Class A fire, Class 4 impact, DaVinci Limited Lifetime Material Warranty.
Riverside — Heat-Optimized Asphalt
Inland Empire home with poor attic ventilation and premature shingle wear. GAF Grand Sequoia installed as a full GAF system with engineered balanced ventilation and high-temperature underlayment — resolving the root-cause ventilation issue.
FAQs
Common Questions
Replace Your Roof — Done Right the First Time.
Fast estimates. Clear pricing. Premium GAF and DaVinci systems installed by professional crews.
Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.