Waterproofing in Fresno, 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 Fresno
Listings updated July 2026
Roof Pros Roofing & General Construction
Fresno, CA
Roof Pros Roofing & General Construction provides commercial flat and low-slope roofing services in Fresno, CA, for ware...
A&C Pro Roofing
Fresno, CA
Licensed Fresno commercial roofer (CSLB #1121044) specializing in TPO, PVC single-ply, and acrylic coatings for flat and...
Alcon's Roofing Inc. - Roofing Company Fresno
Fresno, CA
Fresno commercial roofer specializing in TPO, flat, and low-slope systems. Owner-led, multi-site pricing, 24-hr leak res...
High Impact Roofing Inc
Fresno, CA
Fresno commercial roofer with CA Lic #1082979 offering 24/7 emergency response, new installs, re-roofing, and repairs ac...
The Roofing Crew LLC
Fresno, CA
Licensed commercial roofer (CSLB #1122640) in Fresno, CA — flat roofs, TPO, EPDM, coatings & emergency repairs for offic...
Roofs 4 Less
Fresno, CA
Licensed Fresno commercial roofer offering repair, replacement & emergency service with a 7-year warranty and 30-day pri...
Apex Valley Roofing, Inc
Fresno, CA
Licensed commercial roofing contractor in Fresno, CA (Lic# 933280) specializing in flat roofs, leak repair, and installa...
Global Commercial Spray Foam Roofing
Fresno, CA
GAF-certified, 4th-generation commercial roofer in Fresno offering spray foam, TPO, modified bitumen & silicone for offi...
Best Choice Roofing
Fresno, CA
Fresno commercial roofer serving a 180-mi radius. TPO, PVC, metal & industrial systems for warehouses, retail & office p...
Armament Coatings and Roofing INC
Fresno, CA
Armament Coatings & Roofing offers commercial roof replacement, repair, and coatings in Fresno, CA, backed by a 100% sat...
Zinc Roofing & Air Conditioning
Fresno, CA
Zinc Roofing & Air Conditioning — CSLB #1063175, 4.9-star rated Fresno contractor for commercial roofing installation, r...
Roof Maxx of N. Fresno, CA
Fresno, CA
Roof Maxx of North Fresno provides shingle rejuvenation treatments extending roof life up to 15 years across Fresno's co...
New View Roofing
Fresno, CA
Fresno commercial roofer with 24/7 emergency response, Owens Corning Platinum status, and flat, metal & low-slope system...
HGC Roofing INC
Fresno, CA
GAF Certified Plus commercial roofer in Fresno, CA. TPO, EPDM, metal & coatings for office, retail, warehouse & multifam...
Hi Tech Roofing services Co.
Fresno, CA
Hi Tech Roofing Services Co. serves Fresno, CA commercial properties with TPO, EPDM, modified bitumen, BUR, coatings & m...
Grandmark Service Company
Fresno, CA
GAF Master Elite contractor in Fresno, CA serving commercial flat, low-slope & metal roofing with video documentation an...
Cal City Roofing
Fresno, CA
Cal City Roofing delivers commercial flat and low-slope roofing services in Fresno, CA — TPO, EPDM, modified bitumen, co...
Trust All Roofing Inc.
Fresno, CA
Licensed commercial roofer in Fresno, CA (Lic #1080804) specializing in SPF, TPO, single-ply & coated-ply systems for in...
Commercial Roofing
Fresno, CA
Fresno, CA commercial roofing contractor serving office, retail, warehouse & industrial facilities with TPO, EPDM, metal...
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 Fresno
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 Fresno contractorsRelated Repair Services in Fresno
Frequently Asked Questions — Waterproofing in Fresno
How much does waterproofing cost in Fresno, CA?
Waterproofing costs in Fresno 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 Fresno?
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.