Our Mission:

Providing insight that keeps your building water-tight.

Navigating building enclosure specs, installing watertight products, or maintaining a watertight facility can be daunting. With over 35 years of experience, D-Seven LLC is your premier manufacturer rep firm for innovative Division 7 building products in the Pacific Northwest.

We focus on you—architects, consultants, engineers, building owners, and installing contractors. We partner with top manufacturers who value quality and innovation, ensuring you get the best products for your projects.

As your local resource for roofing, waterproofing, wall systems, and expansion joints, D-Seven provides top-class education and project support to help you confidently design, specify, and install. With offices in Seattle and Portland, we're here to serve you across the Pacific Northwest.