- HEP Roofing
- Impact-rated Asphalt

Impact-rated Asphalt
Impact-rated Asphalt | Siding Solutions | Roofing | Decherd
When Decherd storms blow in from the Cumberland Plateau, HEP’s impact-rated asphalt roofing stands guard, deflecting hail, driving rain, and punishing winds that would shred ordinary shingles. Our crews bring decades of local know-how to every rooftop, installing industry-leading asphalt systems that shrug off damage while elevating curb appeal. The result is quiet confidence: a home that looks sharp today and stays watertight tomorrow—backed by warranties as solid as the roofs we build.
We pair that same toughness with precision-crafted siding solutions to create a seamless exterior shield. From energy-efficient underlayment to color-fast finishes that won’t fade in the Tennessee sun, each panel is engineered for long-term performance and eye-catching style. Trust HEP to wrap your Decherd property in protection that works as hard as you do, season after season.
FAQs
What does “impact-rated” mean when it comes to asphalt roofing and siding?
An impact-rated product has been laboratory-tested to withstand the force of hail and flying debris without cracking, denting, or losing protective granules. Roofing and siding panels that achieve a UL 2218 Class 3 or Class 4 impact rating can absorb repeated strikes from 1.75"–2" steel balls dropped from 17–20 ft, simulating severe hail. This means less storm damage, fewer leaks, and longer service life for homes in Decherd’s storm-prone climate.
How well do impact-rated asphalt shingles and siding hold up against Decherd’s hail and high winds?
Class 4 asphalt shingles are engineered with heavier mats, reinforced back-surfacing, and polymer-modified asphalt that flexes instead of fracturing. When combined with proper nailing patterns, they carry wind warranties up to 130 mph—well above the 80 mph gusts occasionally recorded in Franklin County. Matching impact-resistant siding panels feature interlocking edges and foam backing that dampens blows and resists wind-driven rain, greatly reducing the chance of cracks or blow-offs during spring thunderstorms.
Will my homeowner’s insurance premium go down if I install impact-rated products?
Many insurers that operate in Tennessee—State Farm, Farm Bureau, Travelers, and others—offer 5 %–25 % discounts on the wind/hail portion of your policy when you install UL 2218 Class 4 roofing. Some carriers extend smaller credits for compliant siding as well. Because every policy is different, we supply product certification documents and help you fill out the insurer’s verification form so you can capture the maximum savings as soon as your final inspection is complete.
How much more do impact-rated shingles and siding cost compared with standard grades?
On average, Class 4 asphalt shingles run about $40–$70 more per 100 sq ft (a "square") than conventional architectural shingles. Impact-resistant vinyl or polymer-blend siding can add $1.00–$1.75 per linear foot. For a 2,000 sq ft roof and 1,800 sq ft of wall surface, the typical premium ranges from $2,100–$3,800 installed. Homeowners often recoup this through lower repair bills, insurance discounts, and a higher resale value within 3–7 years.
What kind of lifespan and warranty can I expect?
Because they suffer less granule loss and structural fatigue, Class 4 asphalt shingles routinely last 30–40 years in Middle Tennessee. Manufacturers back them with limited lifetime warranties and up to 15 years of non-prorated hail coverage. Impact-resistant siding carries 0.040"–0.050" panel thickness, fade-resist technology, and lifetime transferable warranties against cracking, warping, and hail damage. When we install both under a certified system, you also receive our 10-year workmanship guarantee.
What is the installation process and how long will my project take?
1. Free on-site assessment in Decherd to verify measurements, ventilation needs, and color selections. 2. Written proposal with product specs, warranty details, and a firm start date. 3. Permit acquisition and material staging (1–3 days). 4. Tear-off of existing shingles/siding, deck/wall inspection, and repair of any rotten sheathing. 5. Installation of ice-&-water shield, synthetic underlayment, and Class 4 shingles, followed by flashing, ventilation upgrades, and impact-resistant siding panels with foam backer. 6. Final magnetic nail sweep, gutter clean-out, and joint inspection with the homeowner. Most average-sized Decherd homes are completed in 3–4 days for roofing and 2–3 additional days for siding, weather permitting. We keep a dedicated crew on-site until punch-out items are resolved and provide a photo log for your records.