- HEP Roofing
- Energy-efficient Underlayment

Energy-efficient Underlayment
Energy-efficient Underlayment | Roof Replacement | Roofing | Luttrell
When the sun beats down on Luttrell roofs, temperatures soar—and so do energy bills. HEP’s advanced underlayment forms a reflective, airtight barrier beneath your shingles, deflecting radiant heat and sealing out moisture in one smart layer. That means a cooler attic, lower HVAC strain, and year-round comfort without sacrificing style or durability. Homeowners love that this eco-friendly upgrade pairs seamlessly with every major shingle type, ensuring the new system looks great while quietly trimming monthly costs.
Whether a recent storm left you searching for “roof replacement” or you’re simply ready to boost efficiency before another Tennessee summer, HEP delivers a streamlined, mess-free installation backed by local craftsmanship and a rock-solid warranty. Let our Luttrell team show you how an energy-efficient underlayment can pay for itself—schedule your free assessment today and feel the difference on your next power bill.
FAQs
What makes an underlayment “energy-efficient,” and how is it different from a standard felt underlayment?
An energy-efficient underlayment combines high-performance synthetic fabrics with reflective or insulating layers that reduce heat transfer through the roof deck. Unlike traditional #15 or #30 felt, these products have higher R-values, radiant-barrier coatings, and superior moisture resistance. The result is a roof system that keeps attic temperatures lower in summer, reduces heat loss in winter, and lasts two to three times longer than organic felt.
How much can I expect to save on utility bills after installing energy-efficient underlayment in Luttrell’s climate?
Actual savings depend on attic ventilation, insulation levels, and roof color, but homeowners in Luttrell typically see 8–15 % reductions in annual heating and cooling costs. In a 2,000-sq-ft home with average bills of $175/month, that translates to $165–$315 of savings per year. Lower attic temperatures also reduce HVAC run-time, extending equipment life and improving indoor comfort.
Which types of energy-efficient underlayment do you install for roof replacements in Luttrell?
We offer three premium options: 1. Synthetic Radiant-Barrier Underlayment – a woven polypropylene base laminated with an aluminum film that reflects up to 97 % of radiant heat. 2. Self-Adhering Insulated Underlayment – a peel-and-stick SBS rubber sheet with a ¼-inch foam core that adds R-2 to the roof deck while providing ice-dam protection. 3. Hybrid High-Permeability Underlayment – a breathable synthetic mat with micro-perforations that allow moisture to escape while blocking wind-driven rain and adding a modest R-value (≈R-0.5).
Is energy-efficient underlayment compatible with asphalt shingles, metal roofing, or other popular roof systems?
Yes. All of our underlayments meet ASTM D226/D4869 standards for steep-slope roofing and carry UL Class A fire ratings, making them suitable under asphalt shingles, architectural shingles, standing-seam metal, stone-coated steel, and most residential roofing materials approved in Tennessee building codes.
What does the installation process involve and will it add time to my roof replacement?
The process is identical to a standard tear-off and reroof, except we apply the upgraded underlayment after decking inspection: 1. Remove old shingles and felt. 2. Inspect and repair decking. 3. Install drip edge and ice-and-water shield at eaves. 4. Roll out or peel-and-stick the energy-efficient underlayment, sealing all laps. 5. Install new roofing material. For a typical 30-square roof, this adds only 1–2 extra hours but provides decades of energy savings.
Are there tax credits or utility rebates available for installing energy-efficient roofing in Luttrell?
The State of Tennessee currently offers no statewide credit, but Knoxville Utilities Board (KUB) customers in Union County may qualify for up to $400 in Home Uplift or Home Energy Rebate funds for reflective or insulated roof components. Additionally, the federal Energy Efficient Home Improvement Credit (IRC 25C) provides up to 30 % of material costs, capped at $1,200 per year, for qualifying underlayments specified by ENERGY STAR® or the IRS. We supply all documentation needed to submit your rebate or tax forms.