Gannon Roofing Supply carries an unmatched stock of steep-slope roofing products in stock. We warehouse a huge supply of basic architectural shingles from both GAF and Certainteed, as well as selected colors from Malarkey. We also carry the full line of Certainteed Landmark Premium, lifetime guaranteed shingles, as well as all colors of the GAF Marquis Weathermax and certainted XT-25 three-tab lines.

Need to accessorize? We stock five different colors of edge metal in three profiles, various brands of standard and synthetic underlayment, ice and water barrier, aluminum flashing, roof louvers, ridge vent, cap and starter shingles, penetration flashings, and fasteners.

We also have the ability to special order designer shingles like GAF's Grand Sequoia and Certainteed Presidential Shake, normally delivered in less than a week and we deal in a full line of metal roofing, synthetic slate, Energy Star certified products, and skylights.

Bottom line? If it belongs on a roof and you need it, or just need to know about it, we can help.