TruExterior manufactures poly-ash siding and trim products designed to resist moisture, movement, and common exterior maintenance issues. Golden State Lumber and Showroom supplies TruExterior siding and trim products for exterior remodels, custom homes, multifamily projects, and curb appeal upgrades throughout Northern California.










Boral™ Building Products, home to TruExterior Siding & Trim, has built its reputation by offering quality building products and accessories. By focusing on maintenance-free beauty, easy installation, sustainability and vast colors options, we provide everything professionals need for a job done right, and exactly what homeowners seek in long-lasting beauty.
Each of the Boral Building Products brands is designed to fulfill a specific industry need and is manufactured in the U.S.A. to maintain consistent quality and availability – from decking to siding, shutters to trim and beyond.
House Wrap Installation for TruExterior Siding | Drainable House Wrap
Composite Siding Installation | TruExterior Craftsman Horizontal Application
Horizontal Siding Installation Setup | TruExterior Craftsman Collection
Siding Corner Installation | TruExterior Craftsman Horizontal Siding
Nickel Gap Siding Installation | TruExterior Outside Corners
SturdiMount Installation with TruExterior Nickel Gap Siding
Exterior Window Trim Installation | TruExterior Trim Assembly
Why Choose TruExterior Siding & Trim? | Poly-Ash Performance
Easy-to-Install Siding | TruExterior Builder Testimonial
Paintable Siding | TruExterior Builder Testimonial
Exterior Siding Ideas for Lasting Curb Appeal | TruExterior
Moisture-Resistant Siding | Why Builders Choose TruExterior
Poly-Ash Siding Built for Versatility | TruExterior
Low-Maintenance Siding with Design Versatility | TruExterior
Visit one of our 8 Northern California Showrooms. Request an appointment.
Find technical specifications, installation guides, warranty information and more. Simply search by brand or product category to refine your search and access the support you need. Can’t find what you’re looking for? Contact your Golden State Lumber + Showroom professional.
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Golden State Lumber has been serving Northern California builders, contractors, architects, and homeowners for decades. We combine quality building materials with knowledgeable service to help customers find the right products and solutions for projects of every size.
Many customers return because they value consistent service, knowledgeable support, and access to quality building materials and trusted brands. Our goal is to build long-term relationships by helping customers complete successful projects, no matter the size.
If you don’t see the product you need, contact our team. Through our extensive supplier network, we can often source specialty, custom, and hard-to-find products and help you find the best solution for your project.