Do you offer free in-home estimates for window or door replacement?

Yes! We provide completely free, no-obligation in-home estimates for all potential customers. During the visit, our team will assess your needs, answer questions, and provide a written quote with our best pricing—no pressure, no gimmicks. The consultation typically takes less than an hour, and we'll help you understand all your options clearly.

What types of windows do you install, and can they be customized?

We install a full range of custom replacement windows, including double hung, sliding, casement, awning, picture, bay & bow, garden windows, and specialty-shaped windows. Each product is made to order, meaning you can choose the size, grid style, glass type, and color to match your home's style and energy efficiency needs.

Are your windows energy-efficient and backed by a warranty?

Absolutely. Our windows are built with ENERGY STAR® certified Low-E glass, argon gas insulation, and fusion-welded frames to maximize thermal performance. Every window comes with a Limited Lifetime Warranty, covering materials, manufacturing defects, and even accidental glass breakage—giving you peace of mind for years to come.

Do you install entry and patio doors, or just windows?

Yes, in addition to windows, we also install high-quality entry doors, sliding glass patio doors, and French doors. These doors are energy-efficient, secure, and customizable to match your exterior. Whether you're upgrading curb appeal or improving insulation, we'll help you choose the right option for your home.

What areas do you serve in the Tri-Cities region?

We proudly serve Kingsport, Johnson City, Bristol, and surrounding areas in Northeast Tennessee and Southwest Virginia. As a locally owned and operated business, we understand the unique climate and housing needs in the Tri-Cities region and provide personalized service with fast response times.

The Window Source Home Siding Installation Services in Tri-Cities

If you’re looking for a fresh new look for your home’s exterior, updating the siding is a great way to give your well-loved home a facelift. The Window Source provides several siding options to meet your style and the needs of your home. One of our experts can help you find the siding option that works best for you.

Vinyl siding is a great option for finishing the outside of your home. The siding is built to withstand extreme weather. Siding also requires minimal maintenance over its lifetime and is resistant to excessive moisture.There are numerous benefits to installing siding on your house. You will enjoy the increase in curb appeal, reduced energy costs, and easy-to-maintain exterior of new siding.

[ Tri-Cities Siding Replacment ]

Ascend®

At The Window Source of the Tri-Cities, we offer ASCEND® Composite Cladding, a revolutionary siding solution that combines beauty, durability, and easy maintenance. Designed for homeowners who want the look of real wood without the upkeep, ASCEND® delivers exceptional performance with its lightweight yet impact-resistant design.

Thickness: 0.042″ (nominal)
Profiles Available: 7″ clapboard-style panels
Maintenance: Requires minimal upkeep—an occasional rinse with a garden hose keeps its real-wood appearance and color-rich finish looking great for years.

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[ Insulated Siding ]

Prodigy® Insulated Siding

Prodigy insulated siding offers exceptional heat resistance that will help you save on energy costs. Prodigy siding is insulated and form-fit to endure even the strongest winds.

.046″ premium panel thickness (nominal)
Up to five times the impact resistance versus hollow back siding
Industry-leading 1½” thick insulation (nominal) wraps your home in a blanket of insulation to help reduce utility costs year round and provide a warm and inviting living space
Secure interlocking panel design provides a tight fit with no insulation gaps and clean, classic course lines
Prodigy premium vinyl surface repels downpours while the insulating layer breathes freely to keep your home comfortable and inviting
16’8″ extended length panel design creates the look of natural wood and does not require face nailing or unsightly caulking

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[ energy-efficient siding ]

Charter Oak®

Charter Oak offers a durable, energy-efficient siding that will require little maintenance and keep your home looking great. Charter Oak offers an array of colors to match your style.

.046″ premium panel thickness (nominal)
Alside’s flagship siding product, combines authentic wood beauty with unmatched durability, performance and maintenance freedom
Exclusive TriBeam® design gives Charter Oak superior strength
Charter Oak is up to five times more rigid than the competition
Charter Oak siding has been independently tested to withstand Category 5 hurricane-force winds

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Tri-Cities Energy Efficient Siding Experts

[ Easy To Clean Siding ]

Conquest®

The Conquest siding is easy to clean, offers unmatched quality and is priced competitively. You’ll love the range of colors available in Conquest siding.

.040″ thickness (nominal)
Available in 4-1/2″ clapboard and dutch lap profiles
An occasional rinse with a garden hose will keep Conquest’s natural cedar grain texture and low-gloss finish beautiful year after year

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[ Reviews ]

HEAR FROM OUR TRI-CITY CLIENTS

Karin H.

We found The Window Source via a radio advertisement for a home show, and are thrilled that we did. They do actual window conversions in mobile homes so we no longer have old ugly windows with cheesy frames; instead they are now beautiful windows with real frames and sills. The Window Source gave us the best quote…
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Randall F.

I recently had replacement windows and Alside Ascend siding put on my house by The Window Source and they look fantastic. The large arch window they installed is nothing short of stunning. Daniel and Blake Mullin, a father & son team, installed the windows. Their work ethics and craftsmanship are something you just don't see much of nowadays...

Cory H.

One of the best home improvement projects I've had done. Communicative, On time, Professional, Polite, Cleanly, Attentive.Answered all questions and informed me of proper use of windows and features. This is coming from a guy who has done similar service/home improvement work and I'd be ecstatic to know I'm getting Shawn and Trent...

Heidi R.

The Window Source did such a beautiful job! From scheduling the appointment with Julie, to meeting with David the salesman and Dan & Blake the installers, it was nothing but excellence & professionalism! Dan & Blake finished the installation faster than scheduled & made sure everything was clean & tidy at the end of the day. What a great team they...

Karen G.

The entire team from The Window Source of Tri Cities was amazing to work with. Gina & Sheila in the office, Justin Fender ( design consultant) , Joe & Justin ( installers)! From start to finish communication, pricing, product & installation processes were explained thoroughly. The windows are wonderful! I love the screens...

Louise N.

We had a great experience with The Window Source of the Tri-Cities. They replaced a double-hung window with a picture window and wrapped 7 windows altogether. Justin did a great job walking us through our options, and Gina was super-helpful setting up appointments and keeping us updated on our order. Sean and Trenton arrived...

Judy A.

We have window 2 times now & will use again next year! Our experience has been great especially with the men who install! They are genuinely good people, Does excellent work! Shawn has been here 2 times for install & this last time Trenton was here , also a great guy! Shawn pays attention to detail & doesn't rush through a project. Our salesman David has...

Stephen L.

Shawn and Trenton came out today and installed my storm door. They did an awesome job. They were very professional and got the job done in a timely manner. They cleaned up before they left and I couldn’t be happier. I would 100% recommend Shaw, Trenton and of course, The Window Source!
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Andrea H.

Shawn & Trenton W. installed sliding glass doors on my balcony & I couldn't be more pleased with the outcome! They were a professional, courteous team that greeted me with smiles & even informed me of what to expect during the process. I am so happy with the install, the doors & thankful my sister chose The Window Source for this job!

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[ OUR SERVICE AREA ]

Serving Southwest Virginia and Northeast Tennessee including the Tri-Cities

As homeowners, it can be difficult to find the right company for patio doors, double-hung windows, siding and more. The Window Source has been a trusted supplier around America. Our experts will help you pick the right option to meet your needs and ensure that your home improvements will make the neighbors stop to take a look.

We help homeowners with new and replacement windows, patio doors, siding, entry doors and more. We offer a variety of styles, colors and options to meet your needs.The best way to get the process started is through our free estimate. Let’s schedule a time for an in-home demonstration and free estimate.

One of our estimators will look at the proposed project and talk to you about your wants and needs. It’s important for us to meet your expectations and the first step to success is an estimate.

Home Siding Installation in Tri-Cities

[ Tri-Cities Siding Replacment ]

Ascend®

[ Insulated Siding ]

Prodigy® Insulated Siding

[ energy-efficient siding ]

Charter Oak®

[ Easy To Clean Siding ]

Conquest®

[ Reviews ]

HEAR FROM OUR TRI-CITY CLIENTS

Karin H.

Randall F.

Cory H.

Heidi R.

Karen G.

Louise N.

Judy A.

Stephen L.

Andrea H.

[ OUR SERVICE AREA ]

Serving Southwest Virginia and Northeast Tennessee including the Tri-Cities

Abingdon

Bluff City

Bristol

Clintwood

Elizabethton

Erwin

Gate City

Greeneville

Johnson City

Jonesborough

Kingsport

Mountain City

Rogersville

Wise

[ blog ]

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