With quality products, Windmill Window and Door can give everyone, in Muskoka and the surrounding area, choices for all your window and door needs for either commercial or residential properties.



At Windmill Window and door, we offer a range of options for your windows, residential or commercial, from installation, glass replacements, and more.



Whether your space is residential or commercial, Windmill Window and Door can provide you with a range of services from insulated, storm, patio, enclosures, and more.

about us


Owner and operator Gary Dam has almost 30 years experience in the glass and window trade and is a certified architectural glass and metal technician.

Gary started working in the window and door industry while attending High School sweeping floors. He then had the opportunity to attend George Brown College and in 1993 he completed the Glazier and Metal Mechanic Apprentice Program. Upon completion he continued to work for various companies before starting is own business, Gary Dam Window and Door. Gary closed his business in Guelph after 9 years to relocate to Huntsville. After a couple of years of working for another window company, Gary decided to start his own business again. In January of 2012 Windmill Window and Door was born doing small jobs and sub contracting for other companies. Eight years later (January 2020) Gary incorporated to what is now known as Windmill Window and Door Ltd and opened a showroom located in Huntsville.


My wife & I just had 2 sliding doors replaced. Gary and his team were very professional and safety conscious. During this time of Covid-19 they worked with their masks on and kept a safe distance from us. They arrived on time, worked diligently and cleaned up very effectively. I highly recommend them to anyone who is in need of window or doors.

Glen Cowing

Gary and his crew did a great job on our door replacement. I will have them back again for sure. Highly recommended!

Scarlet B

An excellent, professional, timely job was done by Gary and staff. Above and beyond in all respects. I will be a repeat customer!

Gregory Boden

The work was completed on the agreed upon date. On budget .The product color, glass choice was as requested.The doors and windows fit like a glove in a almost 40 year old house. The installation team went above and beyond . I love my new windows and doors. A great experience and would recommend WINDMILL WINDOW and DOOR to my friends and family.

Karen I

Gary, James and Mitchell are a pleasure to deal with. They are highly professional and personable, going out of there way to please. Installing my 2 large patio doors proved more challenging than anticipated and they solved the problems well. I wish there was a 6 star rating.

John Palumbo

Gary and his team were very professional and did an amazing job replacing every window in my house. They left the jobsite super clean at the end of each day, so you couldn't hardly tell they had been there at all. And they did a beautiful trim job at the end. Very happy!


Gary and team (James and Mitchell) were amazing replacing old windows with Northstar windows in our place. Everything was very professional, from recommendations to what kind of windows to order, to colour matching trim, to expert removal and finally installation. The new windows are noticeably warmer. Thanks guys. Great job.

Hardy Limeback

Amazing company. Gary is a pleasure to deal with. His response time and promise to delivery were top notch. Highly recommended!

Adeel Farooq

After multiple companies told me that my door threshold could not be fixed, Gary fixed it. Gary, Mitchell and crew replaced 19 panes of glass in a morning. No mess. No wasting time. Everyone was happy. The areas of the house, where they worked, were cleaner when they left than when they arrived. And new glass lets me see outside, and probably dust inside. Windmill Window and Door Ltd. are on my list of who I trust. Thank you Windmill Window and Door Ltd.

Lorraine Alles

Excellent service. James and Mitchell delivered excellent service. They were efficient, polite and cleaned up after they were finished. The quality of the door and and windows are excellent. I highly recommend Windmill Windows.

Barbara McCoy

windmill window door


No - sometimes we may have mis-measures or cancelled jobs. There are no standard sizes so it's hard to stock product. They are all custom made to size.

"Installation is a Breeze"


Our Location

28 Dairy Lane Unit #2
Huntsville, ON P1H 1T4

Hours of Operation

Monday to Friday
8:00 am to 4:30 pm