Choose Eco-Friendly!

Let us answer your questions about replacing your windows to optimize your house’s energy use.

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Welcome to Guardian Windows & Doors: Sudbury and Surrounding Areas

It’s common knowledge that the quality and age of your windows, doors and siding directly affect your home’s value and your family’s comfort. Replacing energy-wasting elements with those that keep cold air out and warm air in is not only environmentally sound, it saves you money. And it also reduces your environmental footprint. Let Guardian Windows & Doors optimize your home in Sudbury and the surrounding areas.

Energy Star-Rated

In business since 1996, Guardian Windows & Doors specializes in window replacement, supplying and installing Energy Star-rated windows, doors and siding in Sudbury and throughout the Rainbow Country area. Guardian Windows & Doors is proud to offer environmentally friendly Gentek Building Products, as well as free low-E (low-emissivity) glass coatings and argon gas fill to help seal in your window’s insulation for better performance.

Save Your Money

If you replaced your windows and doors and did not call Guardian Windows, you paid too much! We use the “Super Spacer System” that helps reduce sweating on glass. Ask us about the availability of government grants, which varies on a case-by-case basis, and our senior discounts. Call us to see how we can help you!

House & Cottage

We remove old windows and replace them with energy-efficient models just about anywhere.

More Ways to

Replacing doors, weatherstripping and aligning thresholds can help you save on energy bills.

Increase Curb

Replace old siding with new vinyl siding that hosts many advantages to other types of siding.

Protect Your Home

Properly installed soffit and fascia can help keep out water and pests such as squirrels, birds and more.








1182 Kantola Rd.

Lively, ON P3Y 1H8


Monday – Friday: 8 AM - 5 PM
Saturday: By appointment only

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