Alunar® Coating System

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.

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

Reflective and Emissive Cool Roof Surface

Cool Roofing

Energy Efficient Coating Technology

The Interlock® Roof featuring the Alunar® Coating System provides homeowners the ultimate in durability and protection.

Alunar® Coating System Advantage

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

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.

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.

Black, Deep Charcoal, Musket Grey, Colonial Brown, Tudor Brown, Hunter Green, Tile Red, Royal Blue.