Waterproofing in Spokane, WA
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 Spokane
Listings updated June 2026
Spokane Commercial Roofing Inc
Spokane, WA
Spokane Commercial Roofing Inc serves property & facility managers in Spokane, WA with TPO, EPDM, metal, BUR & coating s...
Horizon Roofing & Sheetmetal
Spokane, WA
Horizon Roofing & Sheetmetal serves Spokane commercial facilities with metal, TPO, EPDM, and flat-roof systems — roofing...
Sunvek WA : Commercial Roof Coating
Spokane, WA
Sunvek WA delivers spray-applied roof coatings and SPF restoration for commercial flat roofs across Spokane, WA and surr...
Glacier Roofing & Exteriors
Spokane, WA
Glacier Roofing & Exteriors serves commercial clients in Spokane, WA with metal, TPO, EPDM & modified bitumen systems ac...
New Heights Roofing
Spokane, WA
New Heights Roofing serves Spokane, WA commercial properties with TPO, EPDM, metal, and flat roof systems for offices, r...
Lake City Roofing and Construction
Spokane, WA
Lake City Roofing serves Spokane, WA commercial properties with installs, replacements & repairs. GAF Master Elite & IKO...
Stay Dry Solutions LLC
Spokane, WA
Stay Dry Solutions LLC provides commercial roofing services in Spokane, WA, covering TPO, EPDM, metal, and coating syste...
Morris Clark Siding & Roofing
Spokane, WA
Spokane, WA roofing contractor since 1978 handling metal, shingle & repair for retail, multifamily & mixed-use propertie...
Roofs By Premier
Spokane, WA
Roofs By Premier offers commercial roofing in Spokane, WA — TPO, EPDM, metal, modified bitumen, and coatings for offices...
Flat Roof Pros, Inc.
Spokane, WA
Flat Roof Pros, Inc. offers commercial membrane roofing, restoration, and 24/7 emergency leak response across Spokane, W...
All Things Commercial Roofing
Spokane, WA
Spokane, WA commercial roofing contractor specializing in Conklin coatings, SPF, and metal roof restoration for industri...
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 Spokane
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 Spokane contractorsRelated Repair Services in Spokane
Frequently Asked Questions — Waterproofing in Spokane
How much does waterproofing cost in Spokane, WA?
Waterproofing costs in Spokane 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 Spokane?
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.