Professional Window Installation in Ontario

Replacement Windows
in St. Thomas, London,
Elgin & Middlesex

Professional Window Installation & Energy Efficiency Upgrades

Lower Energy Bills

Save money with Energy Star rated windows that reduce drafts and heat loss

Enhanced Comfort

Maintain consistent indoor temperatures and reduce outside noise

HIgher Home Value

Boost your property value and curb appeal with beautiful new windows

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Serving homeowners throughout St. Thomas, London, Aylmer, Port Stanley, Belmont, Dorchester, Tillsonburg, Elgin County and Middlesex County, PerfectFit Installations provides professional new home, and replacement windows. Demand quality and energy-efficiency with our Canadian partner window manufacturers. With years of experience and satisfied clients across our service area contact us today for a free quote.

Replacement Windows

Exterior Doors

Roofing
Metal & Shingle

Siding Installation

Decks & Fences

Low-E Glass

Coated glass that reduces UV rays, and enhances thermal efficiency.

Argon Gas Filled

Double or triple pane windows filled with argon or inert gas for superior insulation.

Multi-Chamber Frame

Enhanced frames designed for weather resistance and enhanced durability.

Specializing in the installation of high-quality windows, PerfectFit Installations collaborates with reputable Canadian manufacturers such as North Star Windows & Doors, Stage Windows & Doors, and Vinylbilt Windows & Doors. These partnerships ensure that you receive windows that are not only durable and stylish but also tailored to your specific needs.

Excellent rating
Based on 17 reviews

Extremely happy with my new windows and how quickly they were done. Great job, great price.

Lisa Plant

Recently PerfectFit Installation replaced four basement windows. The job was professionally done, on time and on budget. Professional, knowledgeable staff that know far more than windows and made recommendations of other important work that needed to be done to keep my home secure from the elements. Thank you for the outstanding service!

Kim Pritchard

We recently had some windows replaced and had fascia and soffit work done, and I couldn’t be happier with the results. The quality of the work was excellent and the attention to detail really stood out. You can tell they take pride in doing the job right. On top of that, they were great to deal with — friendly, professional, and easy to communicate with throughout the whole process. I wouldn’t hesitate to recommend them to anyone looking for window or exterior work.

Adam Beverley

Very professional and great experience! Quick and amazing service ! Mike is the best 👍

Fawzi Koudsi

Perfect fit did a couple windows and a patio door on separate occasions and when they're done everything is perfectly put back and cleaned up. Excellent job on the trim work. A company that definately cares about your space.

Esther Klassen

The guys at PerfectFit did a great job with our windows and doors, including replacing all the capping which made the house look new again!🙌. I would definitely recommend them!

Cathy Harder

Hiring perfect fit was a great choice for our family, got all our windows and really nice doors done and we're really happy with cost and results. Highly recommend

Nicole Hernandez

Definitely gonna use these guys again! Experienced, professional and quality workmanship.

Abe Harder

We recently had all of the main floor windows and patio door installed by perfectfit and they look and operate perfectly. The installers were professional, organized and courteous. The inside and outside of the house were just as clean as before the work was started. I would recommend perfectfit to anyone who needs their windows or doors replaced.

Rick Fehr

Contact Us for a FREE Estimate!

226-448-1547

Serving: Aylmer, St. Thomas, London, Port Stanley, Tillsonburg, Belmont, Dorchester, Port Bruce, Elgin County, Middlesex, and Surrounding Areas

Proud Member: St. Thomas Chamber of Commerce, Google Business