Care & Maintenance


GEM has chosen the window and door products we carry to minimize the care and maintenance you’ll need to do—that’s the beauty of high quality vinyl, aluminum and fiberglass. Simple cleaning and lubrication will keep your windows and doors looking their best and operating well for years to come.

Glass Surfaces

You can apply a mild soap or vinegar-based cleaner to the glass, either by spraying or using a clean, grit-free cloth or sponge saturated with cleaning solution. Avoid using ammonia or alcohol-based cleaners, which can cause streaking. Less is more—be careful not to damage glazing, frame finish, wood components or insulating unit seals by being overzealous with your cleaners or cleaning. Make sure to follow any directions on the cleaner label for toxicity, handling and flammability warnings.

Exterior Frames

Use a mild soap or diluted detergent solution with clean, warm water, and wipe surfaces gently using a clean cloth, soft bristle brush, or low pressure spray cleaner. Rinse surfaces thoroughly with clean water before the soap or detergent dries.

Insect Screens

Interior mounted screens can be vacuumed with a soft brush attachment or wiped with a soap and water solution. You can also remove the screen, lay it on a flat surface, apply a cleaning solution and let it soak for a minute. Then you can rinse the screen with a low-pressure spray, such as a garden hose.

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Aluminum Sunrooms


Real estate in the GTA is at a premium. Adding an aluminum sunrooms orenclosing an existing porch can expand your living space.
Seasonal sunroomsand porch enclosures increase the available space in your home—it’s like building an addition at the fraction of the cost of a four-season room.

Modern sunroom and porch structures look great and can be fully customized to match the look and feel of your home.

GEM installs Everlast aluminum sunrooms and porch enclosures. These well-made enclosures can be paired with any of Everlast’s high-quality storm doors or patio doors for a unified look.

Three-season sunrooms are built from thermally broken aluminum windows and doors at a depth of 4 ½ inches. Customers can then choose from casement, fixed, or awning-style windows.

All of GEM’s porch enclosures and three-season sunrooms are customized in order to meet our customers’ needs, budget and design goals.

Patio Doors


Sliding patio doors can provide a great view, practical function and does not take up space. Compared to the traditional French patio doors these sliding options don’t take up any space in the home. Sliding patio doors can come in 2, 3, or 4 panels allowing you to optimize your opening. Ranging in standard widths and heights and allowing for custom patio door sizing, this door can fit most existing openings.

Patio doors also come in different materials to complete your look, choose from Vinyl, Aluminum, and Wood cladded. There is also colour options, glass, mini blinds between the glass, grills, upgraded hardware and security accessories that can make this your door. Patio doors now come in a variety of styles, going from traditional to modern our extensive collection will help you get what you want and need in your home. Let’s not forget that with great LoE glass these doors become a great energy efficient product in your home.

Why GEM Windows & Doors?


We listen more than we talk to understand your needs, budget and priorities and then provide you with customized solution, not a one-size-fits all approach.

We work with you to accomplish your goals:

  • Making your home more comfortable
  • Reducing your energy bills
  • Letting in more light
  • Keeping your home more secure
  • Addressing specific problems like floor fading
  • Reducing or eliminating maintenance
  • Giving your home better curb appeal

1961. Elvis was on top of the charts, John F. Kennedy becomes the youngest US President, and Russia launches Sputnik into outer space. Back at home, John Christopoulos starts GEM Windows, to provide high-quality windows and doors to Toronto homeowners and builders. In an industry of fly-by-night businesses, GEM has a well-earned reputation as Toronto’s oldest and most trusted window and door company. We’ve even had the same phone number since 1961.