CertainTeed Machine Works  has been supporting the insulation contractor community since 1936, manufacturing high quality, professional grade equipment, supported by outstanding customer service. Certainteed Corporation is a leading North American manufacturer of building materials including roofing, vinyl and fiber cement siding, trim, fence, railing, decking, foundations, insulation, gypsum, ceilings and pipe products. Headquartered in Malvern, Pennsylvania, CertainTeed has approximately 7,000 employees and 70 facilities throughout the United States and Canada.


Retrotec began as a blower door manufacturer in Ottawa, Canada. But, by 1984, they grew to include offices in the US.. Retrotec soon expanded their services to include instruction for home performance and whole house diagnostics professionals. Since that time Retrotec has evolved into the world’s leading manufacturer of building diagnostic tools, software and manufacturer’s certification.

Retrotec has become known for its total dedication to innovation and improvement. Its equipment and applications have been re-engineered gradually to maintain professional appearance and performance standards. But, with the aid of an all injection molded product and manufacturing efficiencies, they still compete with less advanced products on the market.