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Ostaco has been in business for over 35 years, providing quality, customized products that meet and exceed performance and quality standards. There are a wide range of colour options available. If you can’t find the colour you want, Ostaco offers colour-matching services on most of its product range. Ostaco windows can be provided in all vinyl or with a clad wood interior, and Ostaco doors come with smooth fibreglass or wood-grain fibreglass.

All Ostaco products have been tested and are certified at the highest levels by the National Fenestration Rating Council (NFRC) and the Canadian Standards Association (CSA).

Ostaco products carry the highest available Energy Star efficiency rating. The Limited Lifetime Ostaco Warranty is one of the best in the industry, being fully transferable and non pro-rated. There is a 20-year warranty on paint on all Ostaco products.

As Ostaco’s official Muskoka dealer, Muskoka Window and Door Centre offers a wide selection of Ostaco products. All Ostaco windows come in custom sizes and are manufactured to your specifications.

Come into our showroom to view our full Ostaco range, including the following products.

Let's get to the point!

Casement and Awning Windows - Clean Look with Built-In Details

  • Casement windows have screen options to let cool air in while preventing insects and pollen from entering your home
  • Complete line of fully accessorized casement windows
  • Energy-saving design

Single Hung and Slider Windows - Beautiful and Energy-Efficient

  • Creates the perfect look
  • Hundreds of possible configurations to meet every need
  • Solitary sash operation of the single hung and slider to increase your energy efficiency

Double Hung and Double Slider Windows - Flexibility of Style

  • Greater flexibility in your hung/slider choice by allowing both sashes to operate freely within the frame
  • Option of being able to operate one or both sashes
  • Excellent choice for renovations and new constructions
  • Durable vinyl construction

Entry Doors - Designed to Make a Statement

  • Adds significant value to your cottage or home.
  • Each component is designed to work together as part of a complete system for maximum energy efficiency and security
  • Tru Defense® Door System maximizes the seal between the door and the frame to keep out the damaging effects of wind and rain, and increase energy efficiency

Patio Doors - Built for Your Muskoka Home or Cottage

  • Choice of Core or Moose Patio Doors
  • PollenTec allergy screen that allows fresh air to flow indoors while filtering out pollens
  • Wide range of decorative grilles and energy-smart glazing options to give your door a custom-designed look

The Muskokan Folding Door

Open up your living space at the cottage with the Muskokan Folding Door, created especially for our unique Muskoka applications. Multi-panel designs fit any decor and size of room, and the slim design maximizes viewing area for a clear look at the lake.


Since 1988, the team at Muskoka Window and Door Centre has worked to create long-lasting and meaningful partnerships with a number of industry-leading window and door manufacturers from all around the continent. We display only the highest quality products in our showroom, and pride ourselves on our ability to offer customers only the highest quality window and door systems. Muskoka Window and Door Centre brings a wide range of tried and true window and door products to the people of Muskoka, suitable for projects of any size and scope.