Vinyl Window Installation & Replacement Experts

Goodbye Hideous Old Windows!

Expert Window Installation in Niagara and St. Catharines:

Fit, Finish, Fantastic!

window installation

Having the best windows money can buy is worthless if you don’t have them installed correctly. As Canadians, we live in a harsh climate that can fluctuate wildly. Having your windows replaced by our installation experts means proper protection from the elements, minimizing the risk of damage and maximizing your home’s energy efficiency. Our expert window installers take the time to do the job right!

In 30+ years Frank Minaker has seen it all. We’re proud of our long serving employees and their attention to detail that has impressed our customers time and again. Take Frank Minaker for example – he’s been with us for 30+ years and thousands of installs. You can rest assured investing in DuoTemp windows means getting the right installation by our very own experts (not nameless subcontractors!)

Frank installing window

Vinyl Window Types:

A Model for Every Use and Style

Ultra-premium Regency windows encompass all of the hallmarks of exceptional window design – unsurpassed quality and energy efficiency, along with classic beauty and maintenance freedom. Tested and proven to help cut heating and cooling energy consumption, these performanceengineered windows are a smart investment in your home and are endorsed by a lifetime limited, transferable warranty. The tabs below detail the style and features of each available model.

Vinyl Window Features:

The Distinctive Quality Difference

Gentek’s replacement windows expertly combine classic beauty, enduring strength and easy upkeep with maximum energy savings to achieve the ideal window system for your home. Compare Gentek’s powerfully built construction with other vinyl windows and you’ll immediately see – and feel – the distinctive quality difference.

origin II vinyl technology

Origin II premium vinyl is an advanced vinyl that is rugged, durable and virtually maintenance free.

renovation masterframe
Fusion-welded sash and masterframe provide superior strength and structural integrity, while neat, tight corners create aesthetic appeal.
integraweld fusion welding

Steel-Reinforced Meeting Rails Heavy-duty metal fortifies the window and allows for secure mounting of hardware.


Double hung and slider windows steel sash reinforcement to strengthen and prevent flexing

constantforce balance system

Double hung windows feature the ConstantForce coil which ensures smooth and easy sash opening and closing for decades.

energy saving design windows

Windows feature efficient frame / sash construction, airtight insulating chambers, protective weatherstripping. More on energy efficiency

Window Replacement Colours + Styles:

Match Your House, Express Your Personality

While white vinyl replacement windows are by far our top seller there is a multitude of choices in style, colour and budget. As well as looking great these vinyl windows carry one of the best warranties in the industry with coverage on the glass, extrusions, hardware, and construction. You’ll have peace of mind for years to come.

Choose Your Colour

Vinyl windows are available in standard white or beige fully extruded colours, this means that the colour is throughout not just painted on. You can also choose from 7 standard painted exterior colours: Pebble, Commercial Brown, Chestnut Brown, Maize, Wicker, Sandalwood and Storm. An optional Dark Oak laminate is available on the interior for added appeal on our casement and awning windows.

window colours and styles

Add Some Style with Decorative Grids

We also offer a generous selection of grids and decorative glass options for your replacement windows. Interior Grids add style and balance to the appearance of your windows. Choose from Colonial, Diamond, Prairie and Contour style of decorative grids. All grids are enclosed within the insulated glass unit for easy cleaning.

During this past summer we have purchased a new storm door, patio screen and replaced an existing window. I would like to personally congratulate DuoTemp’s office staff and trades people for the outstanding courtesy and service they have provided us. This type of courtesy and service is a rarity, we certainly would not hesitate to recommend DuoTemp based on this experience.
- Jack & Millie Androney
We recently had our basement windows installed by your company… This was the second job we had done with your company and we can honestly say that on both occasions your receptionist Marlene, your salesman Gord Howard and your installer Frank Minaker were very courteous, helpful and efficient. We really appreciate the extra few minutes Mr Minaker took to reattach our alarm sensor to the new basement window.
- Mr & Mrs. Martin Hobson
This letter is in regards to recent work that was completed in my home. Brady who was the gentleman that installed my windows did a superb job with the old out of square frames. Upon returning home from work that day I fully expected to have to clean the carpets in the rooms where the windows were replaced but much to my surprise everything was spotless. The free piece of fascia was also a nice touch.
- Gary
St. Catharines

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