Commercial Roof Replacement
A commercial roof replacement tears off the worn roof in phases, section by section, and installs a new low-slope system chosen for your building, so your doors stay open. QRS replaces commercial roofs across Los Angeles and Orange County, starting with a roofer-led survey that shows whether replacement is due now or can wait.
Overview
Repairs are the right call until the same roof keeps needing them. Signs that commercial roof repair has run its course include leaks in new places every rainy season, seams opening across the field of the roof, surfacing worn thin by years of Southern California sun, and soft spots underfoot where water has reached the insulation or deck. Before we recommend anything, a roofer walks the whole roof and photographs it area by area. The survey shows whether replacement is due now, belongs in next year’s budget, or can wait while targeted repairs keep the roof working.
The new roof should fit how your building works. We install modified bitumen and other low-slope systems, and the survey tells us which one suits your roof. Commercial buildings stay open during the work: we tear off and replace the roof in phases, section by section, planned around your hours, deliveries and the people below. Tarps protect landscaping and nail sweeps keep walkways and parking clear, and when the last section is finished, you get closeout photos of the completed roof for your records.
Compare All Roof Replacement Options →Our Process
How a commercial roof replacement works
Whole-roof survey
A roofer surveys the entire roof, photographs each area and notes how water drains, where equipment sits and how the roof has held up.
- Seams, surfacing and past patches
- Soft or wet areas underfoot
- Drains, curbs and parapet details
System choice and written scope
We recommend the low-slope system that suits your building and put the scope, price and phasing plan in writing before work starts.
- Roof system and flashing details
- Sections and the order of work
- Work hours, access and staging
Phased tear-off and install
Crews work one section at a time, removing the old roofing, checking the deck and installing the new system before starting the next area.
- Old roofing removed down to the deck
- Deck condition photographed while exposed
- New flashings at curbs, drains and edges
A building that stays open
Staging, hoisting and debris removal are planned away from entrances and customer paths, and old roofing is hauled off as each section is finished.
Closeout photos and walkthrough
We walk the finished roof with your team, hand over closeout photos and go over your 10-year workmanship warranty in plain English.
Why Choose QRS for Commercial Roof Replacement?
A new roof is one of the larger decisions a building owner makes, so it should rest on photos and facts. Request an estimate and a roofer will survey the roof before recommending anything.
A survey, not a sales pitch
A roofer tells you whether replacement is really due, with photos of the areas behind the recommendation.
A system matched to the building
Drainage, equipment and foot traffic shape what we recommend, so the new roof suits how the building is used.
Phasing that keeps you open
The work plan follows your hours and the people inside, so business carries on while the roof is replaced.
10-Year workmanship warranty
Every replacement is backed by our 10-year workmanship warranty, which we review with you at the final walkthrough.
Frequently Asked Questions
Straight answers about commercial roof replacement.
Do you pull the permits?
Yes. When the project needs a building permit, we pull it for you.
How do we know it’s time to replace and not repair again?
Look at the pattern rather than the latest leak. If repair bills keep adding up, leaks appear in new places each season, or large areas of the roof are worn, soft or holding water, replacement is usually the sounder investment. Our survey photos show which situation you’re in.
Which roof system will you recommend?
That depends on your building. We install modified bitumen and other low-slope systems, and we weigh drainage, rooftop equipment, foot traffic and the structure underneath before recommending one. Your written scope names the system and explains why it fits.
Will tenants and customers be affected during the replacement?
Your building stays open during the work. We phase the replacement by roof section and settle noise, access, staging and delivery times with you in advance, so you can give tenants and staff dates for each phase.
Can a large roof be replaced in stages?
Yes. Big roofs are divided into sections and replaced in a planned order, and phases can be spread across budget cycles when that fits your plans. Our warehouse roofing page shows how we approach long, flat spans.
How do we look after the new roof?
Keep drains clear and have the roof checked on a schedule, especially ahead of the rainy season and after other trades work up there. Our commercial roof maintenance service handles both, with a photo report after each visit.
Tell us what you need.
Two minutes. A clear next step. No pressure.
Get a Straight Answer on commercial roof replacement
Tell us about the building. A roofer, not a salesperson, walks the roof and gives you a clear next step on commercial roof replacement, with a written scope and price.
- CSLB licensed, bonded & insured
- 10-year workmanship warranty
- Google customer reviews
