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 July 2026
Hexagon Commercial Roofing
Los Angeles, CA
Hexagon Commercial Roofing in Los Angeles, CA offers repair, replacement, coating, new construction, and inspection serv...
Flat Roofing Los Angeles
Los Angeles, CA
Flat Roofing Los Angeles specializes in commercial flat roof installation, repair, replacement, coating, and metal roofi...
GAF Roof Repair & Commercial Roofing
Los Angeles, CA
GAF Roof Repair & Commercial Roofing serves Los Angeles facility managers with TPO, EPDM, modified bitumen, and metal ro...
California Roofers
Los Angeles, CA
California Roofers provides commercial flat and low-slope roofing services in Los Angeles, CA, serving office, retail, i...
Confirmed Roofing Experts - Roofing Contractor
Los Angeles, CA
Confirmed Roofing Experts provides commercial flat roof installation, repair, replacement & silicone coatings across Los...
DuraRoof Solutions | Commercial and Residential Roofing
Los Angeles, CA
DuraRoof Solutions provides commercial & residential roofing services for property managers across Los Angeles, CA, cove...
Los Angeles Roofing & Commercial Roof Repair
Los Angeles, CA
Los Angeles Roofing & Commercial Roof Repair delivers flat and low-slope roofing services for office, retail, industrial...
Roofing & Commercial Roof Repair Los Angeles
Los Angeles, CA
Commercial roofing repair specialist in Los Angeles serving flat and low-slope systems for offices, warehouses, retail,...
Los Angeles Roof Repair & Commercial Roofer
Los Angeles, CA
Los Angeles Roof Repair & Commercial Roofer provides TPO, EPDM, modified bitumen & metal roofing services for commercial...
The Local Roofers Builder
Los Angeles, CA
TLRB Inc. provides commercial roof repairs, coatings & drone inspections for flat-roof properties across Los Angeles, CA...
All In Roofing
Los Angeles, CA
All In Roofing (Lic #1124703) serves commercial properties in Los Angeles with flat roof repair, torch-down, cool roofin...
Benefit Roofing
Los Angeles, CA
Licensed commercial roofer serving all of Los Angeles County — flat roofs, coatings, repair & replacement. Two offices,...
Costar Roofing inc
Los Angeles, CA
Licensed Los Angeles commercial roofer offering flat roofing, coatings, repair, replacement & 24/7 emergency service for...
Commercial Roofing Los Angeles
Los Angeles, CA
Commercial roofing installation, replacement & repair in Los Angeles, CA. Flat, metal, torch down & more. 4.9-star rated...
Metal Roofing Los Angeles
Los Angeles, CA
Metal Roofing Los Angeles installs & replaces commercial metal, flat, and membrane roofing systems across Los Angeles Co...
Metal Roofing & Commercial Roof Coating Los Angeles
Los Angeles, CA
Los Angeles commercial metal roofing & roof coating contractor serving industrial, warehouse, office, and retail propert...
Bilt-Well Roofing
Los Angeles, CA
Bilt-Well Roofing delivers commercial roofing, maintenance, and solar services across Los Angeles, Orange County, and Ve...
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.