James Hardie® Siding Installation in Portland & Vancouver
Protect your home with premium fiber cement siding built for the Pacific Northwest, professionally installed with full weatherproofing, custom flashing, and commercial-grade precision.
- New Siding Installation & Full Replacement
- Certified James Hardie® Specialists
- In-House Custom Flashing & Weatherproofing Systems
Gorilla Built. Gorilla Strong
Commercial-grade materials and expert installation designed for Northwest weather.
Family-Owned & Local
A local team that treats every home like their own, honest, friendly, and reliable.
Built Right the First Time
Precision craftsmanship that uses only the highest-quality materials and eliminates costly future repairs.
Backed by 5-star reviews, licensed & insured
Built to Protect Your Home, Not Just Improve Its Look
Gorilla Works installs and replaces James Hardie fiber-cement siding in Portland and Vancouver, WA, with full moisture barriers, custom flashing and a workmanship warranty. Siding is your home’s first line of defense against moisture, wind, and long-term structural damage. In the Pacific Northwest, constant rain and seasonal changes demand materials and installation methods that go beyond surface-level appearance.
At Gorilla Works, we don’t just install siding. We build complete exterior protection systems. From moisture barriers and custom flashing to precision trim work, every layer is installed with long-term durability in mind.
Our Siding Services
Whether you’re building new or upgrading aging materials, Gorilla Works provides complete siding solutions designed for long-term durability and protection.
New Siding Installation
Building a new home or adding an extension? We install premium fiber cement siding systems with full moisture control, precise alignment, and clean architectural finishes.
- Proper sheathing preparation
- Full WRB installation (Tyvek / WeatherSmart)
- Custom flashing integration
- Clean trim and corner detailing
Best for: New builds, additions, full exterior upgrades
Siding Replacement
Old siding can lead to moisture damage, rising energy costs, and structural problems. We remove failing materials safely and replace them with durable, modern siding systems built for Northwest conditions.
- Removal of old siding
- Repair if needed
- Inspection of underlying structure
- Complete weatherproofing + new installation
Best for: Complete weatherproofing + new installation
Why We Install James Hardie® Fiber Cement Siding
Not all siding performs the same, especially in the Pacific Northwest. James Hardie fiber cement siding is engineered specifically for moisture-heavy and seasonal climates, built to resist warping, cracking, rotting, and swelling.
Engineered for Northwest Weather
Designed to handle rain, humidity, and temperature shifts without losing structural integrity.
Long-Lasting Color Technology
Factory-applied finishes resist fading and maintain their look for years with minimal maintenance.
Fire-Resistant Material
Fiber cement won’t ignite when exposed to direct flame, offering an added layer of protection.
Low Maintenance, High Durability
No frequent repainting, no rotting boards, and no constant upkeep.
More than 10 million homes nationwide feature James Hardie® products, trusted for performance, protection, and long-term value.
Built on a Complete Weather Protection System
Siding is only as strong as the system beneath it. Every Gorilla Works siding project includes full moisture management, not just surface installation, designed specifically for Pacific Northwest conditions.
Tyvek® WRB & WeatherSmart Protection
We install high-performance house wrap systems, including Tyvek WRB and WeatherSmart barriers, to create a protective layer between your home’s structure and exterior siding. This helps:
- Prevent moisture intrusion
- Improve air sealing
- Reduce long-term structural damage risk
- Support long-term siding performance
Custom In-House Flashing Fabrication
Unlike most contractors, Gorilla Works has an in-house flashing shop. We fabricate custom flashings for every project, ensuring precise fit and faster turnaround times.
- Cleaner integration around windows and doors
- Proper water redirection
- Reduced installation delays
- Lower overall project costs
Installed Like a Commercial Project
Our installation methods reflect the same standards used on commercial buildings, because moisture control, flashing, and detail work determine how well your siding performs over time. We don’t cut corners on what you can’t see.
Get a Free QuoteWhy Homeowners Choose Gorilla Works for Siding Installation
Installing siding isn’t just about attaching boards. It’s about protecting your home properly for decades. Homeowners across Portland and Vancouver trust Gorilla Works for precision, durability, and professional standards.
Commercial-Quality
Our crews apply the same installation standards used on large commercial projects, ensuring structural integrity, alignment, and moisture protection are done correctly the first time.
Precision in Every Detail
From layout planning to trim alignment and flashing integration, we focus on clean lines and tight tolerances that elevate both performance and appearance.
Full-System Approach
We don’t treat siding as a surface upgrade. Every project includes weather barriers, custom flashing, and moisture control to protect what’s underneath.
Honest Guidance & Clear Pricing
We provide straightforward estimates and help you understand your options without upselling or pressure tactics.
Long-Term Durability
We install premium fiber cement siding systems built to resist moisture, cracking, warping, and long-term weather exposure.
Limited Lifetime Warranty
All qualifying siding installations are backed by a Limited Lifetime Warranty, giving you confidence in both materials and workmanship.
Commercial-Level Experience Brought to Residential Homes
Gorilla Works isn’t just another siding contractor. Through our sister company, Exteriors Design, our teams have completed large-scale commercial siding installations on skyscrapers and mid-rise buildings across Portland, Seattle, and throughout California.
Commercial projects demand strict standards for moisture control, structural detailing, flashing precision, and long-term performance. The same discipline and technical expertise are brought to every residential siding project we complete.
- Large-Scale Commercial Projects
- Advanced Moisture & Structural Detailing
- Elevated Quality Standards
A Structured, Professional Siding Installation Process
Siding installation is a layered system, not just surface work. Our process ensures every step is handled with precision, from preparation to final detailing.
Consultation & Inspection
We begin with a detailed consultation and exterior inspection, evaluating existing siding, structural conditions, and moisture risk areas before planning your project.
Preparation & Weatherproofing
We prepare the exterior by installing house wrap systems such as Tyvek WRB or WeatherSmart barriers. Custom flashings are fabricated in-house for proper water management.
Precision Siding Installation
James Hardie® fiber cement siding is installed using proper fastening patterns, spacing, and alignment to meet manufacturer and commercial-grade standards.
Final Walkthrough
We complete all trim detailing, sealing, and finishing touches, followed by a final quality check to ensure proper integration and clean architectural lines.
Ready to Upgrade Your Home’s Siding the Right Way?
Whether you’re replacing aging materials or installing brand-new fiber cement siding, our team ensures every layer, from weatherproofing to final trim, is installed with precision and long-term durability in mind.
Get a Free QuoteSee Our Recent Siding Installation Projects
Here are a few examples of siding projects we’ve completed for homeowners across Portland and Vancouver. Every installation is built with proper weatherproofing, custom flashing, and clean architectural finishes.
Proudly Serving Portland, Vancouver & Nearby Communities
Gorilla Works is proudly rooted in the Pacific Northwest. We’re a local, family-owned team delivering reliable exterior services, from fencing to window and siding installation, for homeowners across Portland, Vancouver, and surrounding communities.
Oregon
- Portland
- Gresham
- Beaverton
- Hillsboro
- Tigard
- Lake Oswego
- Happy Valley
- Milwaukie
- Troutdale
Washington
- Vancouver
- Camas
Area not listed? Give us a call!
Helpful Reading Before You Replace Your Siding
Honest answers on when siding can be saved and when it is done.
Trusted by Families Across Portland & Vancouver
From clean installations to long-lasting quality, homeowners choose Gorilla Works because we do things the right way, with honesty, care, and craftsmanship that speaks for itself. Here’s what people are saying about working with our team.
★★★★★ Excellent 4.9 · 73 Google reviews
I highly recommend this company. Their reputation is excellent and it's easy to see why. The installers were efficient, knowledgeable, and a pleasure to know. They are wonderful representatives for the company.
Highly recommend Gorilla Works! Alvin is a great guy who genuinely cares about his customers and takes pride in the work he does. He’s honest, dependable, hardworking, and someone you can trust to do things the right way. If you’re looking for a company that actually cares about the people they serve, give Gorilla Works a call. Definitely a business I’m happy to support and recommend!
We couldn’t be happier with our experience with Gorilla works! The sales guy was awesome-professional, friendly, and great to work with from start to finish. The installers were just as great! They were very friendly, respectful of our home, and did an excellent job installing our new windows. Overall, we are very happy with our new windows and the entire experience. Everyone we dealt with was friendly and professional, and I’m happy to recommend Gorilla Works to anyone looking for new windows.
Gorilla Works did an amazing job with my new privacy fence. It turned out even better than I hoped for. Because the fence is so beautiful, I’m going to need to quit neglecting my yard and bring it up the beauty and quality of the fence. Highly recommend them. Pricing was really good, and they were very even able to start and get done in a shorter timeframe than anticipated.
We had new vinyl windows installed about 4-5 wks ago by Gorilla Works. We needed 15 windows. We thought 15 windows were ordered and getting installed. Installation day came. 14 windows were installed and paid for. We still need a 15th window. After some confusion, some miscommunication. And a call from the owner. We are getting our 15th window!! Yay! You will be glad you went with Gorilla Works!! David, Anton, Isaac, Eric, and Alvin you guys are all exceptional! They will go above and beyond to make sure you have a 5 star experience! You deserve 100 stars!
Did a beautiful job!
They can make your stressful situation to feel manageable just remember their name 🦍
Our newest Google reviews. See all 73 on Google
Frequently Asked Questions
Have questions about materials, pricing, or installation? Here are the answers homeowners ask us most.
Ready to Upgrade Your Home’s Exterior?
Strong materials. Clean installations. Honest communication. It all starts with a quick quote.
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