Jefnik Windows and Doors is your source for new doors, replacement doors, new windows and replacement windows. We provide sales and installation of steel doors, fiberglass doors, patio doors, vinyl, aluminum, fiberglass and wooden standard and custom windows, awning windows, casement windows, single-hung windows, double-hung windows, single-sliding windows, double-sliding windows and picture windows, all available in custom shapes and sizes and in a variety of colour finishes. Jefnik Windows and Doors is based in Mississauga Ontario and proudly serves Mississauga, Oakville, Brampton, Etobicoke, Toronto and the surrounding GTA.

Custom Windows... | Casement Windows... | Single & Double Hung Windows... | Awning & Slider Windows... | From your vision to installation.

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Windows - Sales & Installation

Serving Mississauga, Oakville, Etobicoke and the GTA

Windows - Sales & Installation

Serving Mississauga, Oakville, Etobicoke and the GTA

Replacement windows are a great way to update the look of your home while increasing its curb appeal and value. Current replacement windows perform much better than older wood and single pane windows ever did. They are heat welded at the corners to form a structurally sound frame. The result is a strong, watertight and airtight window system. Vinyl windows installed by Jefnik Windows and Doors will never need sealing or painting since the vinyl is extremely durable and will withstand discoloration and fading.

Jefnik Windows and Doors is a local window and door company providing sales and installation services of new and replacement windows and doors for Mississauga, Oakville, Etobicoke, Toronto and the rest of the GTA. We have a wide selection of energy-star rated vinyl windows. At Jefnik Windows and Doors our goal is 100% customer satisfaction and complete peace of mind during your window installation project.

Not all window installation companies are the same...

It's definitely worth a call with Jefnik Windows & Doors

Liz Ledo
Actual Google Review

"What a pleasure! From the initial call to the in home assessment and installation, the high quality of professionalism was impeccable. We are so pleased with our windows and doors."

Gina Moniz
Actual Google Review

"Terrific service, excellent installation, installers were very friendly and respectful to our home. The service provided was all around awesome. I highly recommend them for your windows and doors. Great products and great knowledge. Thank you so very much, love my windows and doors guys."

Actual Google Review

"Could not have asked for a better experience. Had several new custom doors placed in both home and business, high-end craftsmanship and attention to detail. Absolutely impressed with their work. I would highly recommend this company. A++++"

Dorothy Kowalski
Actual Google Review

"Jeff was amazing to deal with. He was extremely knowledgeable and easy to deal with. He was very responsive with any questions that we had. His whole team is very professional and their attention to detail is exceptional. We will definitely be calling them back next year to do more work on our house. If you are looking for anyone to do work to your windows or doors, look no further."

How to Tell if You Need New Windows

Difficulty Locking, Opening or Closing Windows
Opening and closing your windows shouldn't be part of your daily workout routine - they should open and close with ease. A proper functioning lock is an added seal against air escaping from your home, as well as providing additional security. Anything less could mean that it's time for them to be replaced.

Condensation Build up Between Glass Layers
Between the two panes of glass in double-glazed windows, there should be an airtight seal to reduce heat transfer. If this seal is broken, you'll get moisture build-up on the inside of the outside pane of glass because that has the coldest surface. A cracked seal is a sure sign that it's time to replace your windows.

You Hear a lot of Outside Noise
Do you really want to hear every single thing going on in your neighbourhood? Older windows do not provide very much sound insulation, so if you can hear your neighbour's car from way down the street, you might want to consider replacement windows to absorb those everyday sounds.

Window Frames Are Soft, Chipped or Water Damaged
Even high-quality window frames can rot and decay over time. Being exposed to moisture and dampness causes rot - and in some cases, mould can develop. Take a close look at your window frames and sills. If there are signs of decay or mould growth, it's time for replacement windows.

There's a Draft, Even When Your Windows Are Closed
Can you hear the wind whistling through your windows? Can you feel the cold air coming in around the frame? Or hold a tissue to the window frame and see if it quivers. If your windows are in really rough shape, you'll be able to see light coming through gaps in the frame. Drafty windows will definitely be more noticeable in the winter months when the cold air can be felt blowing into your home. This will have your furnace working overtime as it kicks in to keep the air inside your home at a comfortable temperature.

If you are considering replacement windows for your home or business, contact Jefnik Windows & Doors today.


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Mississauga Windows and Doors LogoGo to Jefnik Homepage for Mississauga Windows and Doors

"From Your Vision To Installation"

Jefnik Windows & Doors
Phone: 416-669-5943
cash, check, credit card, invoice
2583 Kingsberry Cres
Mississauga, ON L5B 2K7