Coating System

Alunar® Coating System

Embedded with Teflon™ Surface Protector

Interlock’s cool roof coating technology applied on a metal roof can greatly reduce heating and cooling costs for your residential property.

All Interlock Metal Roofing Systems are coated with the Alunar Coating System embedded with Teflon Surface Protector.

Interlock’s reflective surface actually reduces home’s temperature during summertime heat, saving you up to 25% on your cooling costs†.

All Interlock® Metal Roofing products utilize a unique low gloss matte finish technology.

Energy Absorbing Dark Roof

Energy-Absorbing Dark Roof

Energy Absorbing Dark Roof

Reflective and Emissive Cool Roof Surface

  • Visible light waves
  • UV waves

Cool Roofing

  • Reflects solar energy
  • Emits solar heat from buildings
  • Reduces building cooling expenses
  • Mitigates Urban Heat Island Effect

Energy Efficient Coating Technology

The Interlock® Roof featuring the Alunar® Coating System embedded with TEFLON™ Surface Protector provides homeowners the ultimate in durability and protection from stains, moisture, and organic debris.

Alunar Coating System Embedded Teflon Surface Protector Logo
Alunar Coating System Diagram
  • Alunar Coating System
  • Primer Base Coat
  • Conversion Coating
  • Alkaline Cleansed
  • Aluminum
  • Back Coat
Energy Star

Alunar® Coating System Advantage

  • Energy Star® Rated (US only)
  • CRRC (Cool Roof Rating Council) Rated
  • LEED 29 standards compliant
  • Harder and more flexible than other premium PVDF coatings on the market
  • Cool Roof pigments deflect UV rays to lessen the heat island effect
  • Environmentally friendly
  • Outstanding Protection from acid rain and corrosive environments
  • Excellent color retention and resistance to chalking and fading
  • Available in a wide variety of colors
  • Formulated with ceramic IR reflective pigmentation to meet high and low-slope Energy Star specifications

*Independent testimonial from an industry expert. Robert worked as Director of Product Innovation Services for LO, Business Development Manager for the Industrial Coatings Division for BASF Corporation and is a founding Board Member for the Cool Metal Roofing Coalition.

Energy Efficient Tax Credits

All residents of the United States are eligible for Energy Efficiency Federal Tax Credits of up to $500.


Cool Roof Rating Council

The following Alunar® coatings are CRRC rated and available for Title 24 of the California Code of Regulations: California’s Energy Efficiency Standards for Residential and Non-residential Buildings.

Related Topics

Metal Roof Colors

Metal Roof Colors Alunar® Coating System embedded with Teflon™ Surface Protector Interlock Roofing offers a highly durable aluminum roofing product available in a range of different colors, opening up an extensive palette for homeowners and designers.  Interlock® roofs are exclusively protected for a lifetime by the Alunar® Coating System embedded with TEFLON™ Surface Protector. Get a Free

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Energy Star® Reflective Values

Energy Star® Reflective Values Energy Efficient Roofing Products — Cool Roofs and Emissivity Free Quote Model Name Initial Solar Reflectance Solar Reflectance after 3 years Initial Emissivity Alunar Charcoal GU06 0.25 0.25 0.83 Alunar Black GU06 0.25 0.25 0.83 Alunar Weathered Brown GU15 0.25 0.25 0.83 Alunar Colonial Brown GU06 0.25 0.25 0.83 Alunar Tudor

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Tax Credits

Tax Credits Energy Efficiency Federal Tax Credits Homeowners can receive a tax credit of 10% of the cost, up to $500, for Interlock Metal Roofing Systems installed on their principal residence. The deduction applies to roofs installed between January 1, 2011, and December 31, 2017.  For more information about available Federal Tax Credits, please visit Energy®

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Evaluation Testing Reports

Evaluation Testing Reports All of our products showcase our total commitment to protect and beautify your home for life,  and to safeguard the environment.  Our roofing systems will provide you with a lifetime of value. Free Quote Evaluation Report ESR1790 Evaluation Report CCMC 10475 Evaluation Report RC148 — Wind Storm Florida FL7263 Hail Qualification —

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Specification Manuals

Specification Manuals All of our products showcase our total commitment to protect and beautify your home for life and to safeguard the environment. Our roofing systems will provide you with a lifetime of value. Get a Free Quote Slate / Cedar Shingles Shake Tile Standing Seam Downloads Slate / Cedar Shingle Spec Manual Shake Spec

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