Windorco Supply

Business Details

50+ Years

experience

Custom Windows & Doors in Seattle

Since 1961, Windorco Supply has been a family-owned and operated manufacturer of high-quality windows and doors. Our commitment to excellence is reflected in our in-house production of solid Douglas-Fir wood windows, welded aluminum windows, and top-tier vinyl options. With over six decades of experience serving the Puget Sound region, we extend our reach to Alaska, Hawaii, and international markets like Russia. Our direct manufacturer model eliminates sales commissions, ensuring competitive pricing without compromising quality. We specialize in replicating historic wood windows for neighborhoods like Queen Anne and Capitol Hill, combining traditional craftsmanship with modern efficiency.

Our trained installers prioritize meticulous workmanship, using premium materials such as Fir and Hemlock trim and high-performance caulking. From custom homes to rental properties, we offer both professional installation and DIY pickup options, supported by expert guidance. Our insulated glass units feature advanced sealing technology for durability, while our storm windows and sliding glass doors cater to diverse architectural needs. Backed by a legacy of repeat customers and referrals, we remain dedicated to maintaining the trust earned through consistent quality and personalized service.

Services

Window Installation Insulated Glass Units Storm Windows Sliding Glass Doors Custom Millwork

Details

Year established: 1961

Highlights and features

Family-owned since 1961 with three generations of expertise
In-house manufacturing ensures quality control and faster lead times
Trained installers use premium materials for lasting results
Direct manufacturer pricing with no sales commission markup
Specialized in historic window replication for Seattle neighborhoods

What people say

Professional service Exceeded expectations No leaks Great workmanship Prompt installation

Website

Update Listing

Services

Window Installation

Professional window installation using trained technicians and premium materials. We replace old windows with custom-fitted wood, vinyl, or aluminum units while minimizing disruption to homeowners. Our process includes interior/exterior caulking, trim work with solid Fir and Hemlock, and post-installation cleanup for a seamless experience.

Insulated Glass Units

Custom insulated glass fabrication with advanced sealing technology. We produce units featuring Low-E coatings, argon gas fills, and desiccant-filled spacers for superior thermal efficiency. Options include tinted, obscure, and laminated glass with decorative grids or custom etching for both residential and commercial applications.

Storm Windows

Durable wood and aluminum storm window solutions for enhanced energy efficiency. Our fixed-pane wood models use pre-primed frames with foam gaskets, while aluminum versions offer sliding functionality in three finishes. Both types create tight seals to protect against harsh weather conditions while maintaining aesthetic appeal.

Sliding Glass Doors

Custom aluminum or vinyl sliding glass patio doors with safety features. Available in half-slider, three-lite, and four-lite configurations up to 12 feet wide. Includes adjustable steel wheels, weather-stripping, and optional keyed locks with matching insect screens for complete outdoor access solutions.

Custom Millwork

Precision-milled window and door trim from solid Hemlock and Fir lumber. We supply colonial stop, quarter round, cove mold, and specialty profiles to complement any architectural style. All trim components are manufactured to exact specifications for seamless integration with our window systems.

Questions

What types of windows do you manufacture?

We produce solid Douglas-Fir wood windows, welded aluminum windows, and top-quality vinyl windows with lifetime warranties.

Do you offer installation services?

Yes, we provide professional window installation using trained technicians with no subcontractors for consistent quality.

Can you replicate historic windows?

Yes, we specialize in replicating old wood windows for Seattle's historic neighborhoods like Queen Anne and Capitol Hill.

What areas do you serve?

We serve Seattle, Puget Sound, Alaska, Hawaii, and international locations including Russia.

Do you sell materials for DIY projects?

Yes, we offer pickup orders with glazing tapes, bead, caulk, and other materials for self-installation projects.

Are your windows energy efficient?

Yes, our windows feature insulated glass units with Low-E coatings and argon gas for superior energy efficiency.

Reviews (6)

Write a Review

Archita Taylor

Jun 19, 2022 Report

Jeff and his crew at Windorco are awesome! They are responsive, helpful, and professional. We are pleased with their timely responses and the quality of their work. Would highly recommend to anyone looking to have new doors/windows installed. Services: Window installation, General door installation

Chris Hagen

Jun 18, 2022 Report

We have now had 3 sets of windows replaced by Windorco, and the experience has been great every time. Jeff and Josh replaced vinyl windows in our home as well as custom built wood frame windows to turn 2 frames into egress appropriate windows in our basement. Windorco has been friendly, professional, efficient, and clean every time. Will definitely use again for any future window needs.

Roxanne Atkins

Jun 13, 2022 Report

I couldn't be happier with the replacement of all the windows (and an unusual sized door) in my 1940's home. The office and the installers were friendly and extremely professional. I highly recommend! Services: Window installation, General door installation, General window replacement

May 23, 2022 Report

A family owned local business, building quality custom windows at a fair price and installed by professional carpenters. I could not have asked for more and am very pleased with the service Windorco provided from start to finish! Services: Window installation, General window replacement, Custom windows

Eleanor Bradley

Mar 12, 2022 Report

We used Windorco to replace the windows of the top floor of our 1930's home. The windows were reasonably priced and good quality. Everyone we worked with at Windorco from sales through installers were professional and very easy to work with. Very happy with the entire experience. So happy that we decided to replace the windows of another floor in our home.

April

Mar 09, 2022 Report

I used Windorco to replace all windows in my home. Very pleased with the entire experience from ease of initial estimate, to ordering and installation. No pressure, fair price and respectful, professional contact throughout. Completely recommend. Service: Window installation