Ottawa Custom Windows & Energy Efficient Windows

Marlboro's vinyl, aluminum and hybrid windows are custom-manufactured to meet your precise specifications and our rigorous standards.

Insulated glass units

Your windows' energy efficiency depends, in large part, on the type of glass used. Marlboro makes its insulated glass units (two panes of glass in a hermetically sealed unit) in-house, from scratch. Our insulated glass units have a full range of features and options to improve energy efficiency, including an insulating dry airspace between its two panes, desiccant to prevent condensation and a warm edge spacer to further reduce heat and air transfer. Airspaces can also be filled with argon gas and double-sealed to enhance the window's insulating performance.

We also offer a full range of glass coatings, including soft coat low-emissivity (low-E) and hard coat low-E, which can help reduce cooling and heating costs.

Marlboro's transferable lifetime warranty

As a highly respected manufacturer with a 30-year track record, we are proud to stand behind our windows with a transferable lifetime warranty on vinyl, aluminum, insulated glass units and hardware.