WINDOWS AND DOORS INSTALLATION
WINDOWS AND FLOORS MILLWORK Installation in Seattle & Surrounding Areas
Why Choose RSG Custom Builds for Your Millwork Installation?
At RSG Custom Builds, we understand that beautiful windows and doors are about more than just glass and hinges — it’s the millwork that frames them that truly defines their look and finish. We specialize in custom window and door millwork installation in Seattle, Everett, Snohomish, Woodinville, Kirkland, Bellevue, and Bothell, WA, offering expert craftsmanship that brings elegance, function, and durability to every opening.
Whether you're replacing old trim, updating casings, or installing brand-new windows and doors, our team delivers clean, precision-cut millwork that complements your home’s architecture and elevates your interior and exterior finish.
Our Millwork Services for Windows & Doors Include:
We approach every millwork installation with care and attention to detail. Whether your style is traditional, modern, craftsman, or transitional, we ensure your windows and doors are trimmed to perfection — inside and out.
Custom Window Casing Installation
We craft and install window casings that suit your home’s character and add refined architectural detail.
Interior & Exterior Door Trim
From simple base casing to ornate profiles, we install door trim that ties your space together beautifully.
Threshold & Sill Installation
We install and finish thresholds and sills with exact precision for durability and clean transitions.
Crown, Baseboard, and Header Millwork
Add statement details or blend your new windows and doors into existing molding with expert millwork finishing.
What to Expect When Installing Millwork with RSG Custom Builds
Millwork is all about the finish — and we take that seriously. Our step-by-step process ensures that every detail lines up perfectly, transitions smoothly, and enhances the overall look and feel of your space.
Initial Consultation
We review your project, assess your existing openings, and recommend the right millwork styles and profiles.
Detailed Proposal
You’ll receive a clear, itemized estimate outlining materials, timeline, and installation details.
LEARN MORE ABOUT US
FAQ
We’re here to deliver millwork that looks custom because it is — done right the first time, with quality that lasts.
How long does window or door millwork take to install?
Most installations are completed in 1–3 days, depending on quantity and complexity. We’ll provide a detailed timeline.
Can you match existing trim styles in my home?
Absolutely. We can recreate or complement existing casing, headers, and molding for a seamless finish.
Do you install both windows/doors and millwork, or just trim?
We do both — and specialize in integrating the two so your openings are clean, sealed, and beautifully finished.
We Listen First
Our Windows and Door Millwork Installation Services Include:
Whether you’re restoring historic character or creating a modern look, we take time to understand your vision. Millwork is all about the details — and we bring the tools, knowledge, and care to do it right.
Our Values
Craftsmanship That Lasts
Our work is tight, clean, and made to stand the test of time — with every cut and joint aligned perfectly.
Honest Communication
We explain your options, listen to your input, and guide you through materials and design choices.
Respect for Your Home
We protect your floors and furniture, clean up after ourselves, and treat your home like it’s our own.
Local Dedication
We’re proud to serve Seattle and surrounding cities, and we know how to build for the beauty and weather of the Pacific Northwest.
Ready to Start? We’re Ready When You Are.
If you’re ready to upgrade your window and door millwork — or want to explore how clean, custom trim can transform your space — let’s talk. We’d love to help you bring your home’s design together with craftsmanship that stands out.