Education
What Is a Weather Resistant Barrier and Why Does It Matter for Commercial Buildings?
March 10, 2026 · 6 min read
Guide
The Complete Guide to Commercial Exterior Cladding Systems in the Pacific Northwest
Exteriors Design Team February 14, 2026 12 min read
Introduction to Commercial Exterior Cladding
The exterior cladding of a commercial building serves two critical functions: protecting the building from environmental elements and defining its architectural character. With over 25 years of experience in the Pacific Northwest, Exteriors Design LLC has become the region's most trusted authority on commercial cladding systems.
Understanding the Exterior Wall Assembly
A properly designed exterior wall assembly includes multiple layers working together: structural framing, exterior sheathing, a weather resistant barrier (WRB), a drainage plane, and the cladding itself. Understanding how these layers interact is critical to a high-performance building envelope.
The Main Cladding Systems
Weather Resistant Barriers
The foundation of any cladding system is a properly installed WRB. We install self-adhesive, mechanically attached, and liquid-applied systems from leading manufacturers.
Fiber Cement
Fiber cement siding is the workhorse of commercial cladding — durable, versatile, and cost-effective. James Hardie, Nichiha, and SwissPearl are among the brands we regularly install.
Metal Panels
Metal wall panels deliver premium aesthetics and longevity. ACM, steel, aluminum, and zinc panels are all in our installation portfolio.
Specialty Systems
For unique projects, we install GFRC panels, UHPC panels, wood veneer panels, and aluminum honeycomb core panels.
The Pacific Northwest Climate Challenge
Portland receives an average of 37 inches of rain per year. This moisture-heavy environment demands cladding systems that can manage bulk water, water vapor, and air infiltration simultaneously. Our team has refined our installation techniques for these specific conditions over 30 years.
Working With Exteriors Design
We work directly with general contractors and architects from pre-construction through warranty. Our team provides mockups, manufacturer certifications, shop drawings review, and post-installation inspections. Get in touch to start the conversation.
Ready to Start Your Project?
Our team of certified installers is ready to help with your next commercial exterior cladding project.
