Newmarket Windows & Doors Replacement & Installation

Are you looking for a reliable windows and doors company in Newmarket to provide you with top of the line windows and doors as well as most trusted replacement & installation services? If so, we are the perfect match for you!

See Our Product Get A Free Quote

Satisfaction Guarantee For Our
Newmark Windows & Newmarket Doors Services

Once we understand your needs, we will continue to communicate with you during all phases of the project keeping you informed of job progress overall and on a day-to-day basis. We make every effort to stick to the plan, but the best-laid plans can be affected by factors outside of our control.

We do what we can to make adjustments. We stick with every job until it’s done. After completion, we’ll do a walk-through with you to ensure your satisfaction. We want you to feel that we were the solution to your problem – never the problem.

Our Newmark Windows & Newmarket Doors Products



Single Slider

Double Slider


Single Hung

Double Hung

Shaped Windows


Our Step by Step Process

Step 1: Free Consultation & Measurement

Our Reliant Windows & Doors rep will advice regarding which window types will be best for your home and family. For example, if you have young children, you will not want to install windows that are too easy for them to open and fall out of. If you live in an area that has a lot of rain and snowfall, we may recommend awning windows that will still allow airflow during inclement weather. After picking the types of windows you want, our rep will take down the measurements as well.

Step 2: Installation Assessment
Step 3: Preparation

Once the quote is accepted, our Reliant Windows & Doors installation team will schedule a date and time to remove and install the new windows. Before the installation team's arrival, please remove any window coverings and furniture so that the installation team has plenty of room to work.

Step 4: Removal & Installation

Our Reliant Windows & Doors installation team will arrive on time with the products that you've ordered. We will then remove the old window and insert the new one. If you have time on the day, feel free to stick around and watch our installation team does their magic.

Step 5: Project Walkthrough

Once the installation is completed, our installation team will conduct a walkthrough with you to make sure you ae happy with the work done!

Why People Choose Us to Replace & Install Their
Newmark Windows & Newmarket Doors

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Honest & Fair Prices

We care about your budget and give fair and reasonable rates to our high quality services and specialist services. Working with us can ensure you the very best mix of price and value on your project.
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Hight Quality Products

We are passionate about what we do and believe we offer the very highest quality windows and doors that brings satisfaction to thousands of our happy customers. All our products are made in Canada.
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Precise Installation

Professional installation is a huge factor for success of your renovation project. All our windows and doors are installed by the industry strongest, most capable and most experienced teams servicing our customers.
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First Class Service

Getting the right advise and excellent service makes all the difference. We guide our customers through each step of the project. Our lifetime warranty is our pledge to you that we will stand behind our products.

What People Say About Our
Newmark Windows & Newmarket Doors Services

  • Bree Stein
    I would highly recommend Reliant Windows. My husband and I had double slider windows installed last week and love them! The crew they sent were professional and efficient. They cleaned up all of their messes and were respectful of our home. The finished products are exactly what we wanted and we are so glad we chose them to install windows that will last a while! If you are on the fence about choosing a Kitchener window company, choose Reliant Windows!

    Bree Stein
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Ferne May
    The entire process from receiving a quote to install was very positive. Our salesman is very knowledgeable, responsive and professional. Window order came in about 2 weeks sooner than expected and installation was scheduled within days. The team of installers were very courteous, professional and quick! They had all 19 windows installed in less than 9 hours and all of the mess and old windows were cleaned up and gone!! Our new bay, end vent slider and bow windows are beautiful!!! We feel like we have a brand new home now! We highly recommend Reliant Window and would definitely purchase from this Kitchener window installation company again! null
    Ferne May
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Gavin Gunn
    I don't usually give reviews but when a company does such a great job it has to be noted. Its A+ all the way for Reliant Windows! From the estimate to the installation this Kitchener window company was great. I had quite a few windows installed including bow and bay windows! I had several other companies give estimates and none of them even came close to competing with them, on price or customer service. I strongly suggest not wasting time on shopping around for windows, just call Reliant Windows! null
    Gavin Gunn
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Sonya Traynor
    I had my windows installed by this Kitchener window company and I couldn't be more happy with the whole process. From my estimate, measurements, showing me full samples of what my basement and main floor windows would look like, and the price of it all in one consultation. The installation by two gentlemen who were able to get all 8 main floor single slider windows and one sliding glass door put in within 7 hours. They kept all the areas clean and were easy to work with. I appreciated that I wasn't bombarded with emails and phone calls concerning if and when I was going to proceed with the purchase while I got other quotes. I'm very happy with my decision to go with Reliant Windows! null
    Sonya Traynor
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Luca Simmons
    I contacted Reliant Windows after a friend told me about them. They were able to come out and give me a quote within a few days and we got the bay windows ordered a few days after that. I replaced 2 windows and it took them right around 3 hours. They did a very good job cleaning up after themselves as well. They were professional and friendly from start to finish. I was able to get a better window for about the same price as other companies were charging for a lower quality window. If I ever need more windows replaced, I will absolutely call this Kitchener window company again! null
    Luca Simmons
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Liam Keith
    The guys from Reliant Windows came around 8 AM which was perfect, and they were already putting up new awning windows within 15 minutes. They were very efficient with their time as well as my own. They were respectful of the home and very kind to me. They walked me through how to lock, unlock and clean the windows. I’d highly recommend this Kitchener window installation company to anyone looking for an upgrade in windows or merely for a better view! They are amazing windows! Thank you!! null
    Liam Keith
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Sonnie Webster
    Our experience with Reliant Windows was fantastic. We received a quote from their salesman who answered all our questions. The price of the windows was very reasonable as well. The installation also went very smoothly. The crew was polite and hardworking and finished our job in one day. We noticed an immediate difference in the temperature of the house. We wish we would have replaced our bow windows sooner!! I will definitely recommend this Kitchener window company to all my friends and neighbours! null
    Sonnie Webster
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Fred Levine
    I had basically all of my windows replaced (which totaled 19 windows) in my home by this Kitchener window installation company! The crew was very friendly and took care to protect our home while the windows were being installed. Everything was cleaned up afterwards before they left and there was very minimal that I had to do to put my house back in order. Overall I had a very good experience and would definitely recommend Reliant Windows. I am very satisfied with the quality of the double slider windows and end vent slider windows as well as the warranty that comes along with the purchase! Thank you!! null
    Fred Levine
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Natalie Hudson
    I had a great experience with Reliant Windows. Their salesman was knowledgeable and helpful in selecting the right windows for our home. He responded timely to all our follow-up questions prior to the actual install. Installation crew did an amazing job with tear out, taking away old windows and the installation of the new ones. We ended up getting single hung, double hung and casement windows. They paid attention to detail and made sure everything was to our satisfaction prior to leaving the job site. We highly recommend this Kitchener window company! null
    Natalie Hudson
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Marnie Warren
    We're so glad we chose Reliant Windows to replace 15 of our old windows! (which included awning windows and picture windows.) They're beautiful and airtight. We've noticed it's definitely warmer on the inside and clarity of them is awesome! The outside is beautiful with the wrapped trim. This crew was EXCELLENT! The experience with this Kitchener window company was perfect from the salesman to the install. The price beat all other bids. Thank you Reliant Windows for making our house look new again! null
    Marnie Warren
    A Satisfied Client with Our Kitchener Window Replacement & Window Installation Services
  • Jett Baird
    We are so happy with our experience with Reliant Windows from start to finish. Seriously, this is an honest review. They go out of their way to make their customers happy. The windows alone are just beautiful! We must have about a 90% noise reduction. We had 6 windows replaced including our bay windows and end vent slider windows. Our previous windows were original to the house and single pane glass that let the outside in so our interior environment now is cool and quiet. The installer was a true professional and had no problems answering questions and the cleanup was spotless. Do not hesitate to get an estimate for your home because the window demo is really impressive! I highly recommend this Barrie window company! null
    Jett Baird
    A Satisfied Client with Our Barrie Window Replacement & Window Installation Services

Our Strong Track Record for Replacing & Installing
Newmark Windows & Newmarket Doors

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Quality Installations

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Customer Satisfaction

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Happy Customers

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Years of Experience

See Some Of Our Past Newmark Windows & Newmarket Doors Work

Get A Free Quote for Your
Newmark Windows & Newmarket Doors Needs

Once you filled out the form, one of our windows & doors consultant will reach out and help you with a quote as well as answering any questions you have about your project.

Get A Quote