Building Supply, Inc. is committed to providing superior
products for residential, commerical and community solar project.
Strengthening that committment in 2013 CBSI has become the exclusive
US manufacturer for Sonali Energees USA LLC. to assemble and test
highly effiecent solar panels produced in Michigan.
Building Supply, Inc. believes in providing quality windows built in
America and are Energy Star qualified. In 2013 Thermolock Mfg. was
acquired by Vinylmax, LLC. of Hamliton, OH and Vinylmax like CBSI
believes in high quality energy efficent windows Produced in the
the Village of Copemish, Contractors Building Supply, Inc. has been
in the renewable energy business for nearly 40 years. We have a
qualified team to meet any of your renewable energy and window needs.