Waterproofing in Los Angeles, CA
Commercial waterproofing seals the vulnerable transitions where most leaks actually start — parapet walls, deck-to-wall joints, plaza decks, and below-grade areas. It uses membranes, sealants, and flashing details engineered for standing water and thermal movement, not the shingles-and-underlayment approach used on sloped residential roofs.
Top Waterproofing Contractors in Los Angeles
Listings updated June 2026
Fine Roofing & Commercial Roof Repair
Los Angeles, CA
Fine Roofing & Commercial Roof Repair serves Los Angeles, CA with TPO, EPDM, BUR, modified bitumen, and coating systems...
Los Angeles Roof Repair & Commercial Roofer
Los Angeles, CA
Commercial roofer in Los Angeles, CA specializing in TPO, EPDM, modified bitumen, BUR, coatings & metal for office, reta...
Bell Gardens Roofing & Commercial Roof Repair
Los Angeles, CA
Bell Gardens Roofing & Commercial Roof Repair serves Los Angeles, CA with TPO, EPDM, modified bitumen, BUR, coatings & m...
Flat Roofing Los Angeles
Los Angeles, CA
Flat Roofing Los Angeles provides TPO, EPDM, BUR, and coating services for commercial properties across the greater Los...
Beverly Hills Roofing & Commercial Roof Repair
Los Angeles, CA
Beverly Hills Roofing & Commercial Roof Repair delivers flat roof repair and membrane services for office, retail, and m...
Benefit Roofing
Los Angeles, CA
Benefit Roofing has served commercial properties across Los Angeles County since 1984, offering flat roof repair, replac...
Hexagon Commercial Roofing
Los Angeles, CA
Hexagon Commercial Roofing in Los Angeles offers repair, replacement, coating, new construction, and inspection services...
Golden Empire Roofing & Commercial Roof Repair
Los Angeles, CA
Golden Empire Roofing delivers commercial roof repair & replacement across Los Angeles, CA — TPO, EPDM, BUR, modified bi...
Naco Roofing & Commercial Roofer
Los Angeles, CA
Naco Roofing & Commercial Roofer delivers TPO, EPDM, modified bitumen, and coating services for commercial properties ac...
GAF Roof Repair & Commercial Roofing
Los Angeles, CA
GAF Roof Repair & Commercial Roofing serves Los Angeles facility managers with TPO, EPDM, BUR, modified bitumen, coating...
DuraRoof Solutions | Commercial and Residential Roofing
Los Angeles, CA
DuraRoof Solutions provides commercial roofing in Los Angeles, CA — TPO, EPDM, BUR & metal systems for office, retail, w...
Whittier CA Roofing & Commercial Roofing
Los Angeles, CA
Whittier-based commercial roofer serving LA County with TPO, coatings & flat roofing. GAF Certified, 20+ yrs experience,...
DK Commercial Roofing
Los Angeles, CA
DK Commercial Roofing serves retail, industrial & warehouse facilities in Los Angeles with repair, maintenance, cool roo...
San Gabriel CA Roofing & Commercial Roof Repair
Los Angeles, CA
San Gabriel CA Roofing & Commercial Roof Repair serves Los Angeles-area facility managers with TPO, EPDM, mod-bit, BUR,...
Balcorp Roof Repair & Commercial Roofing
Los Angeles, CA
Balcorp Roof Repair offers 40+ years of commercial roofing in Los Angeles, CA — flat roofs, TPO, modified bitumen, coati...
ADR Roofing & Commercial Roof Repair.
Los Angeles, CA
ADR Roofing & Commercial Roof Repair offers flat-roof repair and replacement for office, retail, industrial, and warehou...
Affordable Roof Repair & Commercial Roofing.
Los Angeles, CA
Affordable Roof Repair & Commercial Roofing serves LA property managers with TPO, EPDM, modified bitumen, BUR, coatings,...
Commercial Roofing Los Angeles
Los Angeles, CA
Commercial Roofing Los Angeles installs and repairs TPO, EPDM, BUR, and modified bitumen systems for office, retail, ind...
Metal Roofing Los Angeles
Los Angeles, CA
Metal Roofing Los Angeles delivers commercial metal, coating & re-roofing services for LA warehouses, industrial, retail...
Kaliber Roofing Inc
Los Angeles, CA
Kaliber Roofing Inc provides commercial roofing services in Los Angeles, CA, covering TPO, EPDM, modified bitumen, BUR,...
What to Expect from Waterproofing
Initial consultation and site assessment
Leak-source diagnosis (not just the visible interior stain)
Written proposal with detailed scope of work
Repair matched to your existing system to protect the warranty
Final walkthrough and documentation
Waterproofing Pricing in Los Angeles
Pricing varies by contractor and project scope
Request quotes from multiple contractors to compare pricing. Factors that affect cost include system size, building type, equipment brand, warranty terms, and urgency. Always ask for an itemized written estimate before authorizing work.
Get free quotes from Los Angeles contractorsRelated Repair Services in Los Angeles
Frequently Asked Questions — Waterproofing in Los Angeles
How much does waterproofing cost in Los Angeles, CA?
Waterproofing costs in Los Angeles vary based on system size, building type, and scope. Request quotes from multiple contractors through My Roofing Tech to compare pricing. Always ask for itemized written estimates before authorizing any work.
How do I choose the best waterproofing contractor in Los Angeles?
Look for contractors with specific experience in commercial roofing (not just residential). Verify their state license, insurance, and bonding, and confirm they're certified and experienced with your roof system. Check reviews from similar commercial properties. Ask about their workmanship warranty and their typical response time for follow-up issues.
How long does waterproofing typically take?
The timeline depends on the size and complexity of your roof system and the scope of work. Simple repairs often complete in a few hours. Larger installations and replacements may take several days to a few weeks. Emergency service typically stabilizes the problem within hours even when the permanent fix requires returning with materials.
Is waterproofing covered by building insurance?
Generally, sudden storm or accidental damage may be covered by commercial property insurance, while gradual wear and deferred-maintenance issues are not. Contact your insurance provider and ask specifically about coverage for your roof system. A documented inspection report strengthens any claim you file.