Interlock Roofing Ltd. is an Energy Star® Partner. Interlock® Lifetime Metal Roofing Systems are Energy Star® rated.

Energy Star® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy efficient products and practices. For the Homeowner, selecting Energy Star® products means reduced energy usage, less pollution in your area, and less money out of your pocket over time.

For more information please visit Roof Products : ENERGY STAR

For a list of Energy Star® rated Interlock Roofing Systems, please visit Energy Star® Rated Interlock Roofing Systems

The Western States Roofing Contractors Association (WSRCA) is a trade association serving the roofing industry of the Western United States. Founded in 1974, WSRCA also hosts the annual Western Roofing Expo. The WSRCA supports the roofing industry and its members by providing access to trade publications, legal and technical advice and other services. The WSRCA is based in Mountain View, California. Many of the roofing industry's largest manufacturers and suppliers are currently members.

The Metal Roofing Alliance was formed in 1998 by a group of metal roofing manufacturers with the main goal of educating consumers about the benefits of metal roofing. Members include metal roofing suppliers, contractors and distributors, paint corporations, trade magazines, and other construction related corporations.