Commercial Roofing in Los Angeles & Orange County — Protect your building. Keep your business running.
QRS is a commercial roofing contractor in Los Angeles and Orange County, with repairs, replacement and scheduled maintenance for office buildings, retail stores, churches, warehouses, shopping centers and more. Every project starts with a roofer-led survey and a written scope, and the work is planned around how your building runs.
Detail-First Roofing for Commercial Buildings
Most commercial buildings in Southern California sit under low-slope roofs, and those roofs wear differently than a home’s. Water needs a clear path to drains and scuppers. Rooftop HVAC units and other equipment add penetrations that need sound flashing, while parapet walls and coping take the brunt of the sun and the Santa Ana winds. We repair and replace modified bitumen and other low-slope systems, along with the tile and shingle sections found on many churches and some retail buildings.
If you own or manage a commercial building, you need more than a price. You need to know what’s wrong, what it will take to fix and how the work will affect tenants, customers or staff. Our roof surveys are photo-documented and explained in plain English, every scope is written before work starts, and schedules are planned around your hours. When the job is done, you get closeout photos for your files. Request an estimate to get started.
Commercial Roofing Services
Repairs, replacement and ongoing care for any commercial roof.
Commercial Roof Repair
Leaks traced to where the water gets in, then repaired at drains, parapets, seams and rooftop equipment, with before-and-after photos.
Commercial Roof Replacement
When repairs stop adding up: a roofer-led survey, the right low-slope system for your building and phased work that keeps you open.
TPO Roofing
A white, heat-welded single-ply membrane for flat and low-slope commercial roofs, installed over a roof surface prepared for it.
Commercial Roof Maintenance & Inspections
Scheduled inspections and upkeep for commercial roofs, with photo reports for owners, managers and boards, and drain and flashing issues caught early.
Commercial Roofing by Building Type
Every type of building brings its own roofing concerns, so choose yours to see how we plan the work.
Office Building Roofing
Roof surveys, repairs and replacement for office buildings, planned around your tenants and documented for owners and property management clients.
Retail Store Roofing
Roofing for retail stores, from the low-slope roof over the sales floor to mansard and façade sections, scheduled around store hours.
Church Roofing
Roofing for churches and ministry buildings, from tile and shingle sanctuary roofs to low-slope halls, planned around services and events.
Industrial Roofing
Roofing for manufacturing and industrial facilities, with rooftop equipment, penetrations and safe access planned before crews go up.
Shop & Small Business Roofing
Roof repairs and replacement for small commercial buildings: workshops, auto and repair shops, studios and storefront businesses.
Warehouse Roofing
Large low-slope warehouse roofs surveyed, repaired and replaced in sections, with drainage, skylights and the inventory below in mind.
Mall & Shopping Center Roofing
Roofing for malls and shopping centers, phased across tenant spaces and common areas and planned to keep the center open for business.
Why Owners and Managers Choose QRS
Surveys led by roofers
A roofer walks the roof, photographs what matters and gives you a clear next step for each area: repair, monitor, maintain or replace.
Scope and schedule in writing
Before any work starts, you see the scope, the price and how the work will fit around your operations.
Experience and accountability
QRS is a licensed California contractor since 2020, and backs installs with a 10-year workmanship warranty.
Contractors
Partner With QRS
For contractors, builders and property management clients
Need a roofing partner for your projects? We bring roofer-led assessments, written scopes and photo-documented work to every job we do with you.
Partner with us →
Frequently Asked Questions
Straight answers about commercial roofing.
What types of commercial buildings do you roof?
We roof office buildings, retail stores, churches, industrial facilities, shops and small businesses, warehouses, and malls and shopping centers. Apartment buildings and condo communities are covered by our HOA & multi-family roofing service.
Can our building stay open while you work on the roof?
Usually, yes. Most commercial roofing happens while the building is in use, so we plan access, noise, staging and deliveries with you before work begins. If any step needs an area cleared, you’ll know ahead of time.
Do you repair commercial roofs, or only replace them?
Both. Many commercial leaks trace back to one failed flashing, a clogged drain or a worn seam, and a targeted repair is the right fix. When a roof is near the end of its life, the survey photos show it, so you can plan and budget for replacement.
Do you offer ongoing maintenance for commercial roofs?
Yes. Scheduled roof care covers seasonal checks, clearing drains and debris, and a photo record you can keep with your building files. It helps you catch wear early and deal with it before the rainy season.
Do you work with contractors and property management clients?
Yes. We partner with contractors, builders and property management clients across Los Angeles and Orange County. Our contractor partnerships page explains how those projects run.
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A few quick steps. A clear next step. No pressure.
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Get a Straight Answer on commercial roofing
Tell us about the building. A roofer, not a salesperson, walks the roof and gives you a clear next step on commercial roofing, with a written scope and price.
- CSLB licensed, bonded & insured
- 10-year workmanship warranty
- Google customer reviews
