Waterproofing in Pomona, 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 Pomona
Listings updated July 2026
Royal Roof Co
Pomona, CA
Pomona commercial roofer offering BUR, modified bitumen, flat roof coatings, cool roofs, 24/7 emergency service, and mul...
Alpha Roofing
Pomona, CA
Alpha Roofing provides TPO, flat, and metal commercial roofing services in Pomona, CA — licensed, insured, with free est...
The Roofing Company
Pomona, CA
The Roofing Company provides commercial roofing in Pomona, CA — TPO, EPDM, modified bitumen & coatings for industrial, w...
Top Notch Roofing INC
Pomona, CA
Top Notch Roofing Inc offers commercial TPO, metal, and flat roofing installation, replacement, and repair in Pomona, CA...
Pomona Roofing Pros
Pomona, CA
CA-licensed commercial roofer in Pomona serving LA & San Bernardino County with TPO, EPDM, metal, and flat-roof systems...
Skyvision Roofing
Pomona, CA
Skyvision Roofing offers commercial flat roofing — TPO, modified bitumen, BUR — with in-house crews, written quotes, and...
Roofing Guys
Pomona, CA
Pomona, CA commercial roofer specializing in flat & low-slope systems — EPDM, TPO, modified bitumen, coatings — for offi...
First Roofing
Pomona, CA
First Roofing provides commercial roof installation, replacement & repair across Pomona, CA, serving retail, office, ind...
Geronimo Roofing & Leaks
Pomona, CA
Pomona-based commercial roof repair contractor offering same/next-day response for flat roofs, leak repair, waterproofin...
Monarch Roofing LLC
Pomona, CA
Monarch Roofing LLC provides commercial flat-roof services in Pomona, CA — TPO, EPDM, modified bitumen & coatings for in...
Pomona Roofing Inc.
Pomona, CA
Pomona Roofing Inc. serves commercial & industrial property managers in Pomona, CA with TPO, EPDM, mod-bit, coating & fl...
Custom Roof Company
Pomona, CA
Licensed commercial roofer (CSLB #859220) in Pomona, CA. Flat roofs, repairs, replacement & maintenance for industrial,...
Pomona Roofers & Waterproofers
Pomona, CA
Pomona Roofers & Waterproofers offers commercial flat roofing and waterproofing services in Pomona, CA — TPO, EPDM, mod-...
Micasa Pro Roofers
Pomona, CA
Pomona, CA roof tear-off specialists serving commercial contractors across the Inland Empire, LA & Orange counties with...
Howard Roofing Company
Pomona, CA
Howard Roofing Company provides commercial flat and low-slope roofing services in Pomona, CA, covering TPO, EPDM, mod-bi...
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 Pomona
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 Pomona contractorsRelated Repair Services in Pomona
Frequently Asked Questions — Waterproofing in Pomona
How much does waterproofing cost in Pomona, CA?
Waterproofing costs in Pomona 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 Pomona?
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.