- HEP Roofing
- GAF-certified Contractor

GAF-certified Contractor
GAF-certified Contractor | Roofing | Knoxville
When Knoxville homeowners talk about peace of mind, they’re talking about a roof that shrugs off high winds, sideways rain, and summer heat without breaking a sweat. That’s exactly what you get with HEP’s GAF-certified team—the local professionals who combine neighborly service with the most respected materials and training in the industry. From the first shingle inspection to the final nail sweep, every step is engineered to protect your investment and elevate curb appeal.
Choosing HEP means more than just first-class roofing; it means gaining a partner backed by America’s leading shingle manufacturer and Knoxville’s own reputation for honest craftsmanship. Enjoy transparent quotes, flexible financing, and warranties that actually mean something—delivered by technicians who treat your home like their own. Discover why so many East Tennesseans say, “Help is on the way,” and trust HEP to keep their homes covered for decades to come.
FAQs
What does it mean to be a GAF-certified roofing contractor?
GAF certification is a factory-backed credential earned by less than 7% of roofers nationwide. To achieve it, a contractor must carry proper state licensing and insurance, maintain an excellent customer reputation, and complete ongoing professional training with GAF, North America’s largest roofing manufacturer. Choosing a GAF-certified contractor in Knoxville assures you that all installers follow stringent manufacturer guidelines, use genuine GAF components, and can offer you exclusive GAF warranties that non-certified roofers cannot.
Why should I hire a GAF-certified contractor specifically for my Knoxville home?
East Tennessee’s heat, humidity, and sudden storms place unique stresses on roofing systems. A local GAF-certified contractor understands these regional factors and recommends shingles and ventilation designs tested for our climate zone. You’ll get professional installation backed by GAF’s Golden Pledge® or System Plus® warranties—coverage that includes up to 50 years of material protection and up to 25 years of workmanship coverage, even if the contractor goes out of business. That level of peace of mind is especially valuable in a storm-prone area like Knoxville.
What warranty options are available through your GAF certification?
We can register three tiers of enhanced GAF warranties: (1) System Plus®—lifetime shingle warranty with 2 years of workmanship coverage; (2) Silver Pledge®—lifetime shingle warranty plus 10 years of workmanship coverage and tear-off costs; and (3) Golden Pledge®—lifetime shingle warranty plus 25 years of workmanship coverage, tear-off, and disposal costs, along with a 40-point factory inspection by GAF. All include non-prorated material defect coverage for 50 years and are transferable once during the first 20 years.
How long does a typical roof replacement take in Knoxville?
Most residential asphalt shingle roofs (2,000–3,500 sq. ft.) are removed and replaced in one to two working days, weather permitting. Larger homes, complex rooflines, or specialty materials like designer shingles may extend the project to three or four days. Our crew arrives around 7–8 a.m., installs protective tarps, removes old shingles, inspects the decking, makes any repairs, installs new underlayment and GAF roofing components, and completes final cleanup and magnetic nail sweep the same day whenever possible.
How can I tell whether I need a roof repair or a full replacement?
Signs you might only need a repair include isolated leaks, a few missing shingles, or minor flashing damage, especially on roofs under 10 years old. A full replacement is usually recommended if your roof is 15–20+ years old and shows widespread granule loss, curling edges, soft or sagging decking, recurring leaks, or storm damage covering more than 30% of the surface. We offer free on-site inspections with drone imaging and moisture scans to document the condition and provide a clear, written recommendation.
What roofing materials and styles do you offer as a GAF-certified contractor?
As part of the GAF family, we install the Timberline® HDZ™, Timberline® UHDZ™, Timberline® AS II (impact-resistant), and Timberline® CS (cool-roof) shingle lines, along with GAF Designer Shingles such as Camelot II® and Slateline®. For homeowners seeking a metal aesthetic, we also install GAF’s exclusive TimberSteel™ metal shingles. Each system includes GAF-matched underlayment, Ice & Water Shield, starter strip, ridge cap shingles, and Cobra® attic ventilation to ensure full warranty compliance.