✓ Verified — Licensed roofing contractor · License #105001479

William N Knetzer

Roofing contractor · Alton, IL

📍 Alton, IL

William N Knetzer is a state-licensed roofing contractor serving Alton, IL and nearby communities. Their license is verified active on the IL contractor registry (License #105001479). They handle roof repair, replacement, and storm & hail damage. Describe your project on ZeroFi and get matched with William N Knetzer and other vetted local pros - free, with no obligation.

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Licensing status sourced from the public state contractor-license registry. ZeroFi surfaces verified local pros and connects homeowners with them free.