Commercial Roofing · Southern California · Since 2007
Commercial Roofing Services Throughout Southern California — Modified Bitumen, TPO & Torch Applied
When you choose Frontline Roofing, you’re not just hiring a contractor. You’re partnering with a team that values transparency, follows through on promises, and stands behind every square foot of your Southern California commercial roof. Licensed, permitted, and backed by 18 years of California commercial roofing experience
A Commercial Roof Is a Critical Investment — We Treat It That Way
Frontline Roofing is a commercial roofing contractor serving Southern California — Los Angeles County, Orange County, Riverside County, San Bernardino County, and San Diego County. Since 2007, we’ve delivered commercial roofing solutions that combine premium materials, code-compliant installation, and the craftsmanship that keeps 20-year systems performing for 25. Every square foot is backed by full manufacturer warranty, CSLB #1074964, and eighteen years of Southern California commercial roofing experience.
A failing commercial roof doesn’t just mean repair costs — it means interrupted operations, tenant complaints, insurance complications, and potential liability. That’s why property managers and business owners across Southern California trust Frontline with their commercial roof: integrity, reliability, and craftsmanship that lasts.
We work directly with property managers, business owners, commercial real estate investors, and HOA boards across Southern California. Every project receives a licensed project manager, a written timeline, daily site cleanup, and permit coordination through every jurisdiction we serve. No surprises. No shortcuts. Full documentation at project close.
The roofing industry needed more than just materials and labor — it needed integrity, reliability, and craftsmanship that lasts. That's what we set out to build in 2007, and it's still the only standard we hold ourselves to.
Get a Free Commercial
Roof Assessment
Serving Southern California property managers & business owners
Our Credentials
-
- CSLB License #1074964 (Active)
- GAF Silver Pledge Certified
- Owens Corning Preferred
- Google Guaranteed
- BBB A+ Accredited
- Nextdoor Recommended
- NRP Member
- Founded in Lake Elsinore, 2007
Commercial Roofing Systems We Install & Service
Frontline Roofing works on every major commercial and industrial roofing system used in Southern California — from single-ply membranes to metal panel systems to silicone restoration coatings.
TPO (thermoplastic polyolefin) is the most commonly specified flat roof system for commercial buildings in Southern California. It offers many of the same benefits as more expensive systems like PVC or EPDM at a more affordable price point — long-term value through reduced energy costs and fewer repairs over time. Frontline Roofing specializes in commercial TPO roofing installation with custom-tailored systems designed to meet your building's unique specifications. Our certified installers ensure every seam is heat-welded, every sheet is secured to spec, and every project is completed with precision.
- Highly energy-reflective white membrane — reduces cooling costs
- Heat-welded seams — fully watertight bond at all joints
- Fully-adhered and mechanically-fastened configurations
- 20–30 year system life when installed correctly
- Most commonly used for retail, office, and warehouse buildings
PVC (polyvinyl chloride) single-ply membranes offer superior chemical resistance compared to TPO, making them the preferred choice for restaurant properties, industrial facilities, and buildings with grease exhaust or chemical exposure. PVC delivers excellent flexibility in low temperatures and a strong track record for longevity in demanding environments.
- Superior resistance to grease, chemicals, and pollutants
- Heat-welded seams for watertight performance
- Energy-reflective — California Title 24 cool roof compliant
- Preferred for restaurant and food-service roofs
- 25–30 year system life in standard commercial applications
Modified bitumen is widely used for commercial and industrial buildings with low-sloped roof pitch throughout Southern California. Made from asphalt reinforced with polymer modifiers, it delivers strong puncture resistance, reliable waterproofing, and long-term performance. Torch-applied and cold-applied installations available.
- Torch-applied and cold-applied systems available
- Strong puncture and foot traffic resistance
- Proven longevity for warehouses, retail, and mixed-use
- Compatible with existing built-up roofing layers
- Multi-ply options for enhanced weather protection
Flat and low-slope roofing requires fundamentally different expertise than pitched residential roofing. Drainage, ponding water, and membrane penetrations are the primary failure points. Frontline's commercial flat roof teams are trained specifically in drainage slope design, penetration detailing, and system selection for the Southern California climate.
- Ponding water analysis and drainage correction
- Full tear-off or overlay depending on deck condition
- All membrane types: TPO, PVC, mod-bit, BUR
- HVAC curb and penetration re-flashing
- Emergency repair and temporary protection
For commercial roofs that are structurally sound but showing signs of age, silicone roof coatings offer a cost-effective restoration alternative to full membrane replacement. A silicone coating is a fluid-applied, fully-adhered membrane that is monolithic — meaning it has no seams. It extends roof life by 10–15 years and qualifies as a cool roof system under California Title 24 energy codes.
- No tear-off required on qualifying roofs
- Seamless, fully-adhered — eliminates seam failure risk
- Highly reflective — reduces building cooling costs
- California Title 24 cool roof compliant
- 10–15 year extended service life for qualifying systems
Standing seam and corrugated metal roofing systems are the preferred choice for large industrial buildings, warehouses, and manufacturing facilities throughout Riverside County and the Inland Empire. Metal offers 40–70 year longevity, superior fire resistance, and compliance with California's demanding energy performance standards. Frontline handles large-scale metal panel installations with phased scheduling to minimize operational disruption.
- 40–70 year design life — lowest long-term cost
- Superior fire resistance — Class A fire rating
- Phased installation to minimize operations disruption
- High foot traffic load capacity for warehouse access
- Energy Star compliant metal panel options
Any findings beyond the included scope — such as significant underlayment replacement, structural repairs, or material type-specific work — are quoted separately in writing before any work begins. The maintenance visit price is the maintenance visit price.
Commercial Roofing for Every Property Type
Frontline Roofing serves the full spectrum of commercial property types across Southern California — from single-tenant retail to multi-building industrial parks.
Office buildings and retail centers in Southern California face intense UV exposure, high summer heat loads, and intermittent rain events that stress flat and low-slope membranes. Frontline provides minimal-disruption commercial roofing for occupied buildings with clear project timelines and daily cleanup so your tenants and customers experience the least possible impact during installation or repair.
- TPO and PVC for flat and low-slope commercial roofs
- Occupied building protocols with minimal tenant disruption
- HVAC curb re-flashing and penetration sealing
- Commercial roof inspection and condition reports
- Photo documentation and written project records
- Storm damage assessment and insurance documentation
Large-format industrial roofing in the Inland Empire, including Riverside County, Victorville, and surrounding areas, requires specialized crews, phased project scheduling, and roofing systems designed to handle heavy equipment loads and frequent thermal maintenance access. Frontline handles industrial roof replacements and maintenance programs across the full Riverside County industrial corridor from our Riverside roofing contractor office, Southern California's operational home base for our commercial roofing division.
Frontline handles industrial re-roofing and industrial roofing replacement across Riverside County, from warehouse tear-offs in the Perris Valley to distribution-center replacements along the I-215 corridor. When operations cannot stop, we phase the project by roof section and coordinate around your shipping and receiving windows. The result is the same commercial roof system a new build would receive, installed without shutting the business down.
- Metal panel systems and large-format TPO/PVC
- Phased replacement to keep operations running
- Industrial-scale modified bitumen and BUR systems
- Roof drain and internal drainage system installation
- Safety-compliant installation by OSHA-certified crews
- Ongoing maintenance contracts available
HOA common area roofing and multi-family building roofs require the same commercial expertise as office buildings, and also need clear homeowner communication, HOA board coordination, and documentation that satisfies property management requirements. Frontline has extensive experience with the HOA communities of Southwest Riverside County, including tile-dominant developments in Lake Elsinore, Canyon Lake, and Murrieta.
- HOA board communication and approval documentation
- Tile, flat, and membrane systems for common areas
- Multi-unit project scheduling to minimize resident impact
- Reserve study documentation and condition reports
- Annual maintenance programs for HOA portfolios
- Warranty registration and project record delivery
Built for Property Managers, Not Just Homeowners
Commercial roofing clients have different requirements from residential clients. We built our commercial division around what property managers and business owners actually need.
NRP — National Roofing Partners Member
Permits Handled. Always.
Photo Reports & Written Records
Maintenance Contracts Available
How Every Commercial Roofing Project Works
The same transparent, documented process applies to every commercial job we take on — from a small retail repair to a multi-building industrial replacement.
A licensed Frontline technician visits your property, inspects the existing roof system, documents condition, and assesses all penetrations. You receive a written condition report before any proposal is issued.
A detailed proposal covering all materials, labor, permit costs, timeline, and any phasing requirements. We walk through it with your project manager or building owner. No verbal ballparks.
Frontline pulls all required commercial permits, coordinates with the building department, and schedules in phases where occupied buildings require it. City inspection coordination is included.
Project managed by a dedicated Frontline PM. Daily site cleanup throughout every project. Tenant or operational areas protected. Safety protocols observed throughout installation.
Final walkthrough, city inspection sign-off, warranty registration, photo report, and all project documentation delivered to you. Your records are complete before we leave the site.
Commercial Roofing Services — Frequently Asked Questions
Who is the best commercial roofing contractor in Southern California?
The right commercial contractor for your property depends on the roof system, the scale, and the documentation your property records or lender require. Frontline Roofing has held CSLB #1074964 since 2007 with 207 permitted projects on public record, is a GAF Silver Pledge and NRP member, and specializes in TPO, PVC, modified bitumen, silicone coatings, and metal panel systems across Los Angeles, Orange, Riverside, San Bernardino, and San Diego counties. Every commercial project ships with a written condition report, permit records, and a photo report at close.
What is the best flat roof system for a commercial building in Southern California?
TPO is the most commonly specified flat roof system for Southern California commercial buildings because it is highly reflective, Title 24 compliant, and delivers a 20 to 30 year service life at a lower installed cost than PVC. PVC is the right call for restaurants and industrial buildings with grease exhaust or chemical exposure. Modified bitumen and silicone coatings are alternatives when tear-off is not practical.
Do you offer commercial roof maintenance contracts?
Yes. Scheduled maintenance contracts protect your manufacturer warranty, catch small issues before they become emergencies, and are always less expensive than reactive repair. Our commercial maintenance programs are available for single-building portfolios and multi-location accounts through our NRP membership.
Frontline Roofing Services
Explore our professional roofing services, including roof replacement, roof repair, re-roofing, roof inspections, roof maintenance, and commercial roofing.
Roof Inspection
Roof Repair
Roof Maintenance
Roof Replacement
Re-Roofing
Commercial Roofing
Why California Homeowners Choose Frontline Roofing
No cost, no obligation. We inspect, document, and price every job in writing before a single nail goes in.
License #1074964 — active, verifiable, and backed by full liability and workers' comp on every project.
A manufacturer certification held by fewer than 2% of contractors nationwide — your warranty is backed by the manufacturer, not just us.
150+ Verified Reviews Google, Yelp, and BBB A+. Eighteen years of work in Lake Elsinore and Southern California speaking for itself.
Book Your Free Roofing Estimate
Contact Frontline Roofing today to schedule your free estimate and learn how our licensed team can protect your home with quality materials, honest pricing, and roofing solutions built for Southern California.
Contact Frontline Roofing
Your email address will not be published. Required fields are highlighted red.