R-Tech Windows is a Local Company that has been serving Newmarket and surrounding areas since 2003. Located at 1200 Twinney Drive in Newmarket, they are a Dealer of North Star Windows and Doors.

North Star is the largest Vinyl Windows Manufacturer in Ontario and a leader in the Canadian Vinyl Window Industry. They have very high Energy Star ratings and are also a CSA Certified Company specializing in Custom Made Vinyl Replacement Windows.

R-Tech has completed over 2000+ installations and supply over 30 Local Contractors with North Star Windows. At R-Tech every installation is just as important as the next, from one window for a client renovating a Bathroom to Realty Companies with multiple Rental Properties.

R-Tech does not employ commissioned sales people and they treat every job with the same respect. For all your Window, Door and Porch Enclosure needs, call us and experience the R-Tech Difference. 905-830-4095


  • Windows
  • Doors
  • Porch Enclosures
  • Exterior Shutters
  • Siding
  • Eavestroughing


- Monique Chapman

Hi Matt,

I just wanted to drop you a line to say we are very happy with our new doors, specifically the front door!  Your installer was very professional in the installations.  The extra care he took to make sure that everything was aligned and installed properly was very much appreciated.  I am sure he was here longer than he intended to be.

Once again, it was a pleasure dealing with RTech in all aspects.  As always, we will continue to recommend you to friends and plan on contacting you for future projects.

Have a nice weekend.

Many thanks

- Alan & Marsha Ely

It has been quite a day…a brand new dinning room window…thank you! I’m hoping you will forward this to the owner of the window company on our behalf.

Alex, his son and co-worker were absolutely amazing yesterday and today! It was obvious quite early in the day yesterday that our window replacement was not going to be the “usual” or particularly easy. Our window shutters were installed such that the window needed to be custom fitted (elevated and extended out) to allow for locking/unlocking and opening of the window. I observed Alex working through many different solutions until he came upon the right one.. and it was beautifully executed! Alex could have just as easily installed the window and left me with a beautiful window but one unable to function! It was a frustrating and long process but Alex did not acquiesce and persisted to ensure my window was both beautiful and functional for which I am very grateful and for which he should be commended! Not only do I have a beautiful functioning window, but he wouldn’t leave until he had cleaned everything up in my living space even though I suggested it wouldn’t be a problem!

Skilled, pleasant, and honest, employees with integrity and a work ethic are very hard to find so I would suggest you ensure he is rewarded in some way for going above and beyond any expectation.

Many thanks

- Paul and Melissa de Roos

Hey Matt, 

Thank you to you and the whole Rtech crew. 

We love our windows!

Life is so much better. 

We appreciate the professionalism of all the guys over the two day job including an unexpected animal rescue operation! 

Again, everything went great and looks great! You were right in all of your recommendations.

- Martha G.

Good morning Jim! I wanted to let you know that we just love our new windows! They were a long time coming, for us, but the wait was worth it! ….. Your 2 installers were fantastic …..

friendly & considerate, while completing the window installation,  with very little mess (taking the old & rotted window frames out). I was impressed & pleased to see that the guys cleaned everything up both inside & outside ………

Thanks again,

- Mary Venditti

Nice job! I’m so pleased with the two installers sent by the company — what polite, honest, and diligent workers– God bless! 

A few people have already commented and asked me what I thought of the service rendered!

- Carm Volkmann

Hi there,

I want to thank Jim for the wonderful customer service as he came out right away and did not charge to replace a lock part that had gone on our sliding glass doors as they installed our windows over 6 years ago and they have been amazing and were installed so professionally.
Thanks for such amazing products and support!

Take care,

- Graham Devenish

I recently had windows installed by R-Tech Windows.  Jim Weir arrived at my house within a day of calling and took the measurements.  I had some special requests and Jim was more than accommodating to meet my requests.  Jim also assisted with removing an old patio door that my brother-in-law installed.  I offered to pay for the disposal but Jim would not take money for it.  This is excellent customer service.

On the day of the installation, 2 installers, Alex and Dennis, arrived exactly on time and completed the job in just a few hours.  They both were professional and very courteous.  They placed drop sheets and cleaned up after the job was complete. I am thoroughly satisfied with the pricing and the final installation result.

R-Tech Windows provides great service and excellent value.  I will be recommending this company to everyone I know.  They did a great job.

- Debra

Hi Matt

I want to express my appreciation for the excellent work that Steve did. I am so grateful to have had his expertise and care in dealing with the challenges of the installation. My thanks to him and Lisa, and to you for your service in getting to a solution for my entrance.

- Sandra

Hi Matt

I wanted to let you know how happy we are with our new front door. We are so pleased with the quality and look of it and the glass choice. Your installer worked very hard all day long and did an excellent job. Much care was taken with the joins of the casing, with caulking and with levelling the door.

It took us a long time to choose a door and we are thrilled we got one we love. I’ve attached some pictures.


- Mat

Hi Jim,
The guys finished, they were great and did a clean job. Thank you. Down the road when I buy new windows, please make sure to send Alex and Dennis again!

- Victor & Pat

Hi Matt!

Thank you so much for the beautiful windows! And, your crew is top notch! They clean up everything. 

I will call you soon to talk about replacing our front door with something much nicer.


- Joe & Nicole


Just wanted to extend a thank you to you and your team. From the initial meeting to the install and the final visit, each representative was friendly, professional and treated our house like it was theirs.

Communication through the process was clear and very helpful where we needed direction. Already got you a few but will absolutely continue the referrals where we can.

Stay safe and pass a thank you on to the team

- Larry Busch

Hi Guys

It has been reported to me that just as Alex had completed his installation today at Edengrove (retirement community) and was driving away, he noticed one of our elderly residents shovelling their driveway. Alex stopped, took their shovel and spent 15 minutes or so and finished shovelling their driveway.

Please pass on to Alex my sincere thanks and appreciation for his kindness.

I would like to take this opportunity to add, that everyone in Edengrove who has met Alex has always been impressed with his pleasant manner and professionalism.

He is an employee to be proud of.

My Regards

- Kim A.

After many years of looking into our backyard through the same old sliding door and its defective glass, we decided to go with a new sliding door. We reached out to Jim at RTech Windows, who came by to measure. The installation was smooth and easy. A few months after it was installed, the door was open, but the screen was not – our dog saw a squirrel, lunged towards it and ended up putting a hole in our brand new screen door. Jim came by, took the screen with him, fixed it and replaced it, all within a few days. He didn’t charge us. Excellent customer service!. Thank you, Jim and RTech Windows.

- Ven & Diane Andersen

Hi Jim,
I just wanted to reach out to you in regards to our recent patio door and rear kitchen window install. We were very impressed right from the point of sale dealing with Mat and with the communication from yourself on the timelines as we are in the middle of a renovation. The quality of the door and window has met our expectations and has beautified the rear of our home. I was also very impressed with your installer Tommy who was very polite and worked in a professional manor and made sure to keep our new floors and furniture protected while performing his install.
In the near future we will be looking at replacing a few more rear windows and will definitely be calling on RTech Windows and your team to do the next install.
Kind Regards

- Anne Feherty, Google Review

We’ve just had our new windows installed by R-Tech! Our experience from start to finish was extremely professional and very friendly! Rain halted installation the first day so the team worked twice as hard and twice as long on the second day! The guys were very respectful of our furniture and flooring and cleaned up after they left! We got three quotes from different companies and R-Tech provided a very competitive price! Jim also went that extra mile for us repairing a torn screen door in another part of the house! I highly recommend this company

- Ali Khandani, Google Review

Tommy and Alex were amazing guys. They really did a fantastic job in installing all our windows. Went above and beyond in being supportive and listening to our needs. Thanks Matt as always for your referral.

- Sarah Young, Google Review

Great service from booking the quote, windows being delivered on time, and the install. Love the windows. Everything was amazing. Very Happy

- Jenna Bishop, Google Review

We are very happy with our new door. Thank you to the the entire team – from sales to installation – for your amazing service.

- Julie Bulie, Google Review

Great company. Just had some sliding door mini blinds installed. Even with covid delays they were ready early and installed right away. Quality seems to be really good and they even look better then I thought. Thank you Jim & Matt. btw R-tech replaced all my windows in my home approx 10 years ago. They all still look great with no issues.

- Baker's Crush, Google Review

Went above and beyond what I expected. Thank you for the extra accommodations.

- Joshua A. Campbell (knowledgebrkr), Google Review

I’ve had nothing but good experiences working with R-Tech Windows! From products to installation, these guys know what they’re doing. They’re on my preferred list of businesses to work with that I give to clients. Highly recommend!

- Brittany McGann, Google Review

They did a beautiful job on our windows and doors; efficient & honest, thank you for your hard work & attention to detail!!

- Misha L, Google Review

If u need windows this is the place to get them ,respectful sales people and very skillful and professional installers



R-Tech Windows

1200 Twinney Dr Newmarket, Ontario L3Y 9E4