Doors that look great and seal out the weather
Your front door is the first thing people see, and a worn or drafty door drags down both curb appeal and comfort. Old patio and sliding doors stick, leak air, and can be a security risk.
TN Window Works replaces entry, patio, sliding glass, and French doors across Knoxville and East Tennessee. We help you pick a door that fits your home and install it to seal tight and open smooth.
- Better curb appeal and a stronger first impression
- Tighter seals that lower drafts and bills
- Smoother, safer operation
- Clean, professional install
Doors we replace
From a new front door to a wall of glass, we replace every kind of exterior door.
Entry doors
Steel, fiberglass, or wood front doors that boost curb appeal and lock up tight.
Patio doors
Let in light and open to your deck or yard. Built to seal and glide.
Sliding glass doors
Smooth-rolling doors that save space and frame the view.
French doors
A classic look that opens wide and adds style to any room.
Storm doors
Add a layer against weather and let in a breeze when you want it.
Secure & efficient
Quality locks and tight seals for safety and lower bills.
How door replacement works
We measure your opening, help you choose the right door, and install it to seal and lock right. You get a clear price before we start.
What to expect
1. Free in-home estimate
We measure your door, talk through styles and materials, and give you a written price.
2. Pick your door
Choose the style, color, glass, and hardware that fit your home. No pressure.
3. Install day
We remove the old door, set the new one level and plumb, seal it, and clean up.
4. Final walk-through
We check the fit, the seal, and the lock with you and make sure it opens smooth.
Why East Tennessee homeowners choose TN Window Works
Local team
We live and work in East Tennessee. When you call, you reach people who know our homes and weather.
Lower energy bills
Tight, energy-rated products help with hot summers and cold, damp winters.
Honest pricing
You get a clear written quote up front. No pressure and no surprise add-ons.
Done right
We show up on time, protect your home, clean up, and finish the job the first time.
What our customers say
“They replaced every window in our house and it feels like a different home. Quiet, warm, and our power bill dropped.”
“Fair price, on time, and they cleaned up everything. Our new front door looks fantastic.”
“Honest, easy to work with, and no pressure. The new windows look great and seal tight.”
Door replacement questions
What types of doors do you replace?
Entry, patio, sliding glass, French, and storm doors, in styles and materials to fit your home.
Will a new door lower my energy bill?
A well-sealed, insulated door cuts drafts and helps your HVAC, which shows up on your bill.
How long does it take to replace a door?
Most single doors are done in a day. We set a clear timeline before we start.
Can you match the style of my home?
Yes. We help you pick a color, material, and design that fit your home and budget.
Do you offer free estimates?
Yes, always free and in person.
Ready for a new door?
Get a free, no-pressure estimate on entry, patio, sliding, or French doors from your local team.