Commercial Roof Installation
Flat and low-slope systems engineered for warehouses, offices, retail, and multi-unit properties — installed code-compliant and on schedule.
What We Offer
Commercial Roofing Systems We Install
TPO (Thermoplastic Polyolefin)
Reflective single-ply membrane for flat and low-slope roofs. Excellent UV resistance and energy efficiency.
EPDM Rubber Roofing
Flexible, weather-resistant membrane that handles temperature swings and provides reliable waterproofing.
PVC Roofing Systems
Chemical and weather-resistant — ideal for restaurants, warehouses, and buildings with rooftop equipment.
Metal Roofing
Durable standing seam and structural metal systems. Fire-resistant and low-maintenance.
Modified Bitumen
Asphalt-polymer multi-layer system that performs well under heavy foot traffic and rooftop equipment loads.
Built-Up Roofing (BUR)
Multi-ply system providing decades of protection for large commercial roof areas.
Why It Matters
What you get with California First Roofing
- Long-term protection vs costly emergency repairs
- Reflective systems lower cooling costs
- Code-compliant, permit-ready installation
- Manufacturer + workmanship warranties
- Property value enhancement
- Sustainable, recyclable system options
Backed by
- Years
- 23
- Projects
- 1,000+
- Google rating
- 5.0 ★
- Reviews
- 247+
The Process
Our commercial installation process
Every project follows the same supervised, transparent process — from first call to final walkthrough.
Comprehensive Inspection
Site visit, drainage assessment, structural review, and rooftop equipment evaluation.
System Recommendation
We recommend the right system for your building, climate, and traffic profile — with options at different price points.
Detailed Proposal
Itemized scope, material specs, timeline, and pricing. Permits and code compliance included.
Installation
Trained crews install your new system with minimal business disruption. We coordinate around operating hours.
Final Inspection
Quality check, documentation, and a property walkthrough with management.
Warranty & Maintenance
Manufacturer + workmanship warranty registered. Maintenance plan setup if desired.
“Every commercial installationI sign off on is one I'd be proud to do on my own house.”
Where We Work
Serving all three California metros
Three California offices serving every major metro. Pick your city for area-specific details.
San Diego
9606 Tierra Grande St, San Diego, CA 92126
Mira Mesa · Carmel Valley · La Jolla · Chula Vista · El Cajon · Poway · Rancho Bernardo
Los Angeles
5850 W 3rd St, Ste E, Los Angeles, CA 90036
Hollywood · Santa Monica · Beverly Hills · Pasadena · Burbank · Culver City · Long Beach
San Jose
690 Saratoga Ave, Ste 100, San Jose, CA 95129
Santa Clara · Sunnyvale · Cupertino · Campbell · Mountain View · Los Gatos · Palo Alto
Related Services
Not sure commercial installation is what you need?
Commercial Repair
Commercial leak fixes, membrane patches, and flashing repairs — diagnosed at the root cause, documented with photos, and completed by in-house crews.
Commercial Replacement
When repairs aren't enough, we remove the old membrane and install a new system suited for your building and budget — with upgraded insulation and energy-efficient options.
Roof Coating
Extend your roof's life by 10-20 years and cut cooling costs without a full replacement.
Commercial Installation FAQ
Commercial Installation questions
Get Started
Request Your Free
Roof Inspection
A licensed inspector examines your roof and delivers a written report with photos. Most estimates back within 24 hours of the visit — no pressure, no obligation.
- Free inspection — no cost, no obligation
- Written estimate before any work begins
- In-house crews only — no subcontractors
- Licensed & insured (CSLB Lic# 1094851)
- Owens Corning Preferred Contractor
- Manufacturer + workmanship warranties