modern replacement windows

The Replacement Windows London Needs

Since 1957, McCallum Aluminum has sold and professionally installed the energy-efficient windows London homeowners and property managers trust. Our experienced installers offer a lifetime workmanship warranty for your peace of mind.

We sell the finest, energy-efficient vinyl windows from North Star and Gentek®, who provide a limited lifetime warranty. You’ll enjoy reduced monthly heating and cooling bills with our Energy Star-certified vinyl windows.

In addition, you’ll increase your curb appeal and your home’s overall value with our attractive windows, which are mostly maintenance-free. Not only will you get McCallum Aluminum’s lifetime workmanship warranty, but you can also count on the manufacturer’s lifetime warranty. We wouldn’t offer our customers any less!


Click on the brochures below for a PDF of North Star or Gentek Window Products

North Star Exclusive Quality Window Selection
Gentek Regency Energy-Saving Windows