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


Boral Steel


American International Forest Products

GAF
IKO
Atlas
Davinci
McElroy Metal

Residential Accessories


Lomanco


Velux


Klauer

Top Shield
IPS
Neverleak

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

GAF

Siding


Certainteed

Gentek


Klauer

Windows and Doors


Alliance Window Systems


MI Windows and Doors

Wincore Windows and Doors