GAF certified residential roofing contractor holding package of Timberline HDZ shingles

Find a contractor near Williamsport, MD

GAF is North America's largest roofing manufacturer. Contractors certified by GAF are trusted to offer our strongest guarantees and warranties.

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Certification & Awards

*Eligibility requirements, coverage, terms and restrictions apply and vary based on the enhanced warranty and products installed. For details and to view full System Plus, Silver Pledge and Golden Pledge Limited Warranties visit gaf.com/en-us/for-homeowners/warranties. Visit gaf.com/LRS for qualifying GAF products.

Specialty Roofing

GAF resources to support your roofing project

Timberline® - America’s #1-selling shingle brand keeps getting better

Timberline HDZ® shingles offer the look people love, and the advanced technologies that people need.
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Roof replacement guide

Helpful project resources so you can make informed choices to plan for your roof project, understand costs, and choose the right shingles for your home.
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Get the residential shingle brochure

Comprehensive guide for available shingle styles, colors, technology, and more.
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*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.

GAF Certifications and Awards for roofers serving Williamsport, MD

GAF President’s Club Award roofing contractor diamond

GAF President’s Club Award

GAF President’s Club Award three-star winners are considered the best of the best among Master Elite® contractors. These contractors can offer the GAF President’s Club Limited Warranty.
GAF Master Elite certified roofer diamond

GAF Master Elite®

GAF Master Elite® contractors are entrusted to offer GAF enhanced warranties including the Golden Pledge® Limited Warranty.*
GAF certified plus residential roofing contractor diamond badge

GAF Certified Plus™

GAF Certified Plus™ contractors can offer GAF enhanced warranties including System Plus and Silver Pledge™ limited warranties.*
GAF certified residential roofing contractor diamond

GAF Certified™

GAF Certified™ contractors can offer one of GAF’s enhanced warranties, the System Plus Limited Warranty.*
*Eligibility requirements, coverage, terms and restrictions apply and vary based on the enhanced warranty and products installed. To view full warranties, visit here. Visit gaf.com/LRS for qualifying GAF products.

FAQs on roof repair and replacements

Get matched with contractors certified by GAF* in your area.
Use GAF's roof cost estimator to get a non-binding estimate for a roof replacement then get personalized quotes from contractors certified by GAF*
Roofing contractors typically offer a comprehensive range of services to meet your home's roofing needs, including inspection, replacement, and repair services. Get matched with a contractor certified by GAF.*
*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.