Rainier Building Supply is a building materials supplier serving Washington State and the broader Pacific region, including Oregon, Idaho, Montana, Alaska, and Hawaii. For more than 10 years, we have supported residential, multifamily, commercial, and mixed use projects with dependable products, expert guidance, and solutions focused on the building envelope.
We provide exterior and envelope materials such as siding, decking, weather resistive barriers, fasteners, sealants, and related systems for homeowners, contractors, builders, general contractors, and design professionals. In addition, our in house sheet metal manufacturing shop fabricates custom flashing and assemblies essential to waterproofing, drainage, and ventilation performance.
With more than 50 years of combined industry experience, our team understands the demands of real job conditions. We focus on being responsive, following through on our commitments, and standing behind our work.
Siding, decking, weather resistive barriers, fasteners, sealants, and exterior accessories
Flashing, waterproofing metal, ventilation components, and drainage assemblies
Material recommendations and job specific guidance based on real world conditions
We carry and source trusted exterior building products from leading manufacturers used across the Pacific region.
