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

Reflective Emissive Cool Roof Surface

Reflective and Emissive Cool Roof Surface

  • Visible light waves
  • UV waves

Cool Roofing

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

Energy Efficient Metal Roof Coating Technology

Roof Coating Layers
  • Alunar Coating System
  • Primer Base Coat
  • Conversion Coating
  • Alkaline Cleansed
  • Aluminum
  • Back Coat
Alunar Coating System embedded with Teflon Surface Protector

Alunar® Coating System Advantage

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

In my 48 years of experience in the metal roofing industry (21 years with Desoto, 10 years with Morton International, 6 years with BASF and 10 years with 3M), it is most unique to find a company who is constantly striving to provide roofing products that live up to claims that are being made to customers.

From the very moment the Interlock Roofing System is applied to a home the customer experiences excellent installation and a very unique surface design all applied to the finest metal available. All these are provided with the promise of great durability and sustainability and a low maintenance roofing system.

The use of Alunar(r) coating systems, which have a superior record of color fastness, chalk resistance and literal fusion like adhesion is the finest coating system anyone can provide. But, Interlock Roofing goes even further to employ the addition of a “Teflon” surface protector to the coating system, which no other company does.

Teflon has been a trusted surface protector by homeowners for decades and you are now getting the utmost in performance from a company that cares.

Robert Scichili

Robert Scichili
Robert Scichili Associates, Inc.

*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.

The Cool Roof Rating Council was created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance (radiative properties) of roofing products and to disseminate the information to all interested parties.

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.