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Knez Building Materials Co. is a family-owned business with a long history dating back to the 1950s. We started as a small company with five flatbed trucks and a handful of employees, but through hard work and dedication, we have grown to become a leading supplier of building materials and insulation solutions. Our team of over 150 dedicated and loyal employees operates out of six locations, serving customers across Oregon and Washington. We are committed to providing excellent service, quality products, and a wide range of solutions to meet our customers' needs.

We provide spray foam insulation services for commercial and residential properties in Portland and surrounding areas. Our services include attic, garage, walls, ceilings, basements, barns, agricultural buildings, homes, apartments, offices, and more.