Gannon Roofing Supply works with over 100 suppliers and manufacturers through the United States and the world to provide you with a full portfolio of quality exterior building products at competitive prices.  We stock and deliver the products and brands professional contractors need.  View our preferred partners by product group below.

Residential Roofing


Certainteed


Owens Corning


Malarkey


Ecostar


Metro Roofing Products


American International Forest Products


Metal Sales


American Building Components

Residential Accessories


Lomanco


Velux


Klauer

Commercial Roofing


Carlisle

GAF


Midstates Asphalt

Commercial Accessories


Milcor


Marathon


OMG


Atlas


Hunter


Georgia Pacific


USG


International Bildrite


Cordeck

Sealants and Coatings

NPC Sealants

Inland Coatings


Eternabond


Karnak


ER Systems

Siding


Certainteed



Revere


Klauer

Windows and Doors


Alliance Window Systems


MI Windows and Doors


Thermatru


Thermatru