About Projects Why Us Products History Contact

St. Claire Window & Door Corp. serves various commercial customers in Maryland, Virginia, the District of Columbia and elsewhere.

We’ve even traveled to locations like Atlantic City, NJ and Raleigh, NC to serve our customers and will travel for your next project if needed.

We provide window, door, storefront, and siding solutions that feature high-quality manufacturing at a great value that are installed by our trained installation teams.

Our customers include owners and managers of low-rise and high-rise structures such as multi-family buildings, office buildings, churches, schools, hotels, restaurants and other commercial structures.

Why Us

We have served our customers for more than 40 years with integrity, accountability, teamwork and excellence. We are a small, focused, niche company that has time-proven reliability and financial stability.

While our primary focus is on manufacturing and installing vinyl windows, we often customize solutions to fit any project needs. If a customer needs wood, aluminum or another material for their windows, doors or storefront, we provide them through our vast relationships and install the products using our exacting standards and trained install teams.

St. Claire offers single-source responsibility and is there to partner with customers from initial concept to completion. We can custom design your product in terms of style of window, color, grid pattern and more to provide the solution you want at a great price. We handle everything in-house from on-site measuring to manufacturing, scheduling, shipping, installation and jobsite supervision. We are also there for service and support all along the way and in the future.


We provide any product needed for a commercial building envelope including:

Vinyl Windows & Doors

Aluminum or Wood Windows and Doors


Steel and Fiberglass Entry & Patio Doors

Siding, Panels and Gutters

Contact us today to talk about your particular project so we can provide product information and specifications that will fit your needs.

Our History

The roots of St. Claire Window & Door Corp. date back to 1980 when the company was founded and called Mid-Lantic Window Company, located on West Street in Annapolis MD. Mid-Lantic was later split into two separate companies:

St. Claire Window & Door Corp. to serve the commercial space and Thompson Creek Window Company to serve the residential market. The St. Claire name honored Claire Wuest, the late mother of Thompson Creek Windows President Rick Wuest.

Today, St. Claire Window and Door Corp. operates in modern offices and warehouse facilities in Hyattsville, MD just off the Beltway near Fed Ex Field.


1775 Brightseat Road, Suite A
Hyattsville, MD 20785


I stopped by the job site this and must say I was impressed with the work being done. Nevertheless, the way St. Claire’s is consistent with weekly communication/reporting is outstanding. It is definitely a pleasure to work with such a great company. Kudos!

Ramon Rodriguez
DBK Construction

I was asked to conduct the Punch Out Walk Through, and there was not not one defect in either the product or the installation in my inspection of all 22 buildings. I have been in this industry almost 30 years and have conducted hundreds of Punch Walks but none like this. Job very well done.

Brian E. McCarty
Senior Project Manager, Briarwood Construction, LLC

It was one of the smoothest, customer-friendly, contract performances we have ever observed. Thank you from all of us.

Jutta Heidelberger
Property Manager Steward Manor Apts., Laurel, MD Southern Management

I cannot stress enough the superior job St. Claire Window & Door has accomplished for us. It makes all the difference in the world using a contractor you can trust.

Steve Wischmann
Property Manager Montgomery Mutual — Leisure World