Kitchener Windows & Doors

Customer reviews

This business has 4 Google reviews. We show up to five of them below - read the full listing on Google before deciding.

Kira Jade

Jan 22, 2026

My windows were outdated and drafty. The replacements look stylish and work perfectly. I couldn’t ask for a better result.

Bryanna Layne

Jan 19, 2026

The patio doors are my favorite upgrade. They let in so much light and make the room feel bigger. The locks are sturdy and reliable. I recommend these technicians for quality work.

Kennith Mallet

Jan 6, 2026

The new windows are perfectly aligned and easy to operate. I noticed right away how much quieter the house became. They also add charm to the rooms. This upgrade was worth every penny

Lynna Lundahl

Jan 5, 2026

. The new windows brighten every room. They’re easy to use and very secure. I highly recommend this upgrade

Read all reviews on Google

Before you hire a window and door installer in Ontario

No provincial licence is required. Installation quality is governed by manufacturer specification and the Ontario Building Code rather than by a trade certificate.

General liability insurance and WSIB clearance

Standard checks. Window installation involves ladder work and heavy glass.

Manufacturer-trained installer status

Matters more than usual here, because most window warranties are voided by installation that departs from the manufacturer specification.

Building permit for new or enlarged openings

Replacing a window in an existing opening generally does not need one. Cutting a new opening, or enlarging one for a basement egress window, generally does.

Verify with: Your municipal building department confirms what your specific job requires.

ENERGY STAR certification for the product

Relevant if you intend to claim any efficiency rebate, which typically requires certified products and documentation.

Questions worth asking

Is this a retrofit or a full-frame installation? What would the other one cost?
How is the gap between the window and the rough opening insulated and air-sealed?
Is exterior capping included, and in what colour and material?
Is the warranty on the glass seal, the frame, and the labour - and are they different lengths?
Is the warranty transferable if I sell the house?

Read the full window & door installers hiring guide