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 Unified Steel American International Forest Products
GAF


IKO


Atlas

Tamco

Davinci

McElroy Metal


Brava Roof Tile

Residential Accessories

Lomanco Velux Klauer
Top Shield

IPS

Neverleak

Commercial Roofing

Carlisle

GAF


JM

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
Klauer

Windows and Doors

Alliance Window Systems
Provia Windows