Most Common Commercial Roofing Systems in Los Angeles

Commercial roofing in Los Angeles is a key investment for any property owner looking to ensure long-term durability and code compliance. With the city’s intense sun, rare but heavy rain, and evolving energy regulations, choosing the right roofing system can greatly impact your building’s performance and maintenance costs.

At IRC Roof Solutions, we specialize in providing top-tier commercial roofing options tailored for Southern California’s unique conditions. Below is an in-depth breakdown of the most common systems used across the region.

TPO Roofing Systems

Thermoplastic Olefin (TPO) is one of the most popular commercial roofing systems in Los Angeles. It offers superior energy efficiency thanks to its white reflective surface, which helps reduce HVAC loads. TPO membranes are heat-welded at the seams, creating a watertight barrier that resists leaks and UV degradation.

• Energy Star rated and Title 24 compliant
• Affordable installation cost
• Ideal for flat and low-slope roofs

PVC Roofing Systems

Polyvinyl Chloride (PVC) roofing is another single-ply system known for its chemical resistance and fire-retardant properties. It’s commonly used in facilities like restaurants or chemical plants where grease, oils, or corrosive agents are present.

• Superior durability and weathering
• Welded seams for a monolithic membrane
• Meets Cool Roof Rating Council standards

EPDM Roofing Systems

Ethylene Propylene Diene Monomer (EPDM) roofs are valued for their long life and resistance to UV and ozone exposure. Unlike TPO and PVC, EPDM is a black rubber material, making it more suited for colder climates, but with added insulation, it remains effective in LA’s moderate heat.

• Simple and fast installation
• Excellent tensile strength and elasticity
• Low life-cycle cost

Modified Bitumen

This asphalt-based system is reinforced with polyester or fiberglass, offering multi-layer protection that’s ideal for roofs requiring heavy foot traffic or added durability. It's often installed using torch-down, cold adhesive, or peel-and-stick methods.

• Multiple installation techniques
• Great puncture and tear resistance
• Can be combined with reflective coatings for energy efficiency

Metal Roofing Systems

Metal roofing is growing in popularity due to its exceptional lifespan (40–70 years) and its sustainability. It's an excellent option for commercial properties seeking durability, aesthetics, and environmental impact reduction.

• High solar reflectivity
• Resistant to fire, rot, and pests
• Recyclable and eco-friendly

Which System Is Right for You?

Your decision should be based on your building’s structure, energy efficiency goals, and industry requirements. We recommend consulting a specialist to evaluate which system offers the best long-term ROI for your property.

Check out our comprehensive guide: How to Choose the Right Commercial Roofing System.

Or explore eco-friendly roofing: Cool Roofs in Los Angeles.

Ready to upgrade your commercial roof in Los Angeles? Contact IRC Roof Solutions or call us at (877) 424-7019 for a consultation.