Doors, Windows & Trim
We offer window installation, exterior and interior door installation and exteiror and interior trim installation.
Request A Free Quote!
Doors, Windows & Trim by O’Neil Custom Exteriors LLC
Professional Exterior & Interior Installations for Homes Across Lewis, Cowlitz, Thurston & Mason County
When it comes to enhancing the beauty, efficiency, and value of your home, quality doors, windows, and trim make all the difference. At O’Neil Custom Exteriors LLC, we bring over 30 years of professional experience to every project—delivering dependable craftsmanship from a family-owned and operated company that cares about your home as much as you do.
We provide complete interior and exterior services, offering expert installation, replacement, and finishing solutions that elevate your home’s comfort, style, and performance.
Expert Door, Window & Trim Services
With decades of hands-on experience, our team specializes in precise installation and finishing work that improves energy efficiency, boosts curb appeal, and creates a polished, long-lasting look both inside and out.
We proudly serve:
- Lewis County
- Cowlitz County
- Thurston County
- Mason County
Our knowledge of the Pacific Northwest climate ensures every product we install is built to withstand local weather conditions while maintaining optimal performance and durability.
Our Services
Door Installation & Replacement
Your doors play a crucial role in security, efficiency, and the overall look of your home. We install and replace:
- Exterior entry doors
- Sliding glass doors
- French doors
- Interior doors
- Storm doors
- Custom-fit doors
We ensure proper sealing, alignment, and finishing for smooth operation and long-term reliability.
Window Installation & Replacement
Upgrade your home with energy-efficient windows designed to reduce drafts, increase natural light, and lower heating and cooling costs. Our services include:
- Vinyl windows
- Wood-framed windows
- Energy-efficient window options
- Bay and garden windows
- Custom-sized replacements
Every window is installed with precision to guarantee proper fit, insulation, and weather protection.
Interior & Exterior Trim Work
Trim adds the finishing touch that ties your home’s look together. We provide detailed, professional trim installation for:
- Interior casing and baseboards
- Exterior window and door trim
- Fascia and soffits
- Decorative trim and custom accents
Our craftsmanship ensures clean lines, flawless joints, and a polished appearance that enhances any space.
Why Choose O’Neil Custom Exteriors LLC?
- Family-Owned & Operated
We bring honesty, personal service, and pride to every job—just like we would for our own home.
- Over 30 Years of Experience
Our decades of expertise ensure high-quality installations that stand the test of time.
- Interior & Exterior Specialization
From full exterior upgrades to detailed interior trim work, we offer complete solutions under one trusted company.
- Serving Four Western Washington Counties
Lewis, Cowlitz, Thurston, and Mason County homeowners rely on us for dependable, professional service.
- Free Estimates
We provide transparent, no-obligation estimates to help you plan your project with confidence.
Get a Free Estimate for Doors, Windows & Trim
Whether you're upgrading the look of your home, improving energy efficiency, or completing a remodel, O’Neil Custom Exteriors LLC has the experience and skill to deliver exceptional results.
Contact us today for a free estimate and see why homeowners throughout Western Washington trust our family-owned company for professional doors, windows, and trim services.
