Choose Your Window Glass

Every style of vinyl window by Clera is engineered to accept sealed glass units with optimum air spaces (the amount of space between the 2 panes of glass) for the highest possible energy efficiency. We produce our own sealed glass units using Hydraglass 50™ warm edge technology on Super Spacer® platform. Independent laboratory testing by CSA proves that Clera windows are among the very best available on the market today.

Clera Insulated Glass Benefits

  • Highest possible energy efficiency with Clera's own pane sealed glass units use Hydraglass 50™ warm edge technology on Super Spacer® platform.
  • Durable glazing technique.
  • Larger window area.
  • Meets ENERGY STAR® requirements.
  • Laboratory proven.
  • Participant in the IGMAC certification program.
  • Lifetime warranty on sealed glass units.

Specialty Glass

We offer a range of tinted and patterned glass for privacy or a dramatic look.

  • Sparkolite Sparkolite

  • Listral Listral

  • Monumental Monumental

  • Minster Minster

  • Glacier Glacier

  • Waterglass Waterglass

  • Granite Granite

  • Sandblast Sandblast

  • Chinchilla Chinchilla

Grill Options

Decorative grills are either placed between the two panes of glass or on the exterior depending on the desired overall look. Our external grills are made of uPVC and can be matched to the exterior colour of your new vinyl windows for an integrated look. Our leaded grills are permanently mounted onto the surface of the glass to replicate the timeless look of traditional leaded glass lites. Add character to your home with any of these classic looks.

  • Diamond Grille Diamond Grille

  • Georgian Grille Georgian Grille

  • Colonial Grille Colonial Grille

  • Brass Grille Brass Grille

  • Pewter Grille Pewter Grille

  • Prairie Grille Prairie Grille

  • SDL Grille SDL Grille

Glass Options

We offer a number of glass options in our vinyl windows for greater comfort and ease if use .

Low E glass: A special coating is applied to improve energy efficiency. It has a low U-value measurement coupled with a very high solar heat gain co-efficient.

Argon gas: Argon gas, denser than air, is used to fill the space between the glass panes. The result is dramatically increased insulation values. The gas is inert, colourless and odourless.

Easy-clean glass: A special coating, the same used on glass panels for solar cells, is applied to clear float glass so rain sheets off, leaving cleaner glass. It lasts the entire life of the glass.

Clera Features

Sealed glass

Clera manufactures its own sealed glass units using Hydraglass 50™ warm edge technology on Super Spacer® platform. These materials reduce condensation on the glass and heat and cold transfer around the glass perimeter and can be combined with low emissivity (Low E) coatings, argon gas fillings and a large variety of internal and external grill options.

Hydraglass 50™ warm edge technology on Super Spacer® platform is an insulating glass spacer system that takes insulating glass performance to the next level, setting a new standard for energy efficiency by:

  • improving resistance to condensation
  • reducing conductivity and u-value
  • providing a continuous moisture vapour barrier
  • ensuring superior argon gas retention
  • meeting ENERGY STAR® requirements


Clera's glazing and Hydraglass 50™ technologies are second to none and are the reason we can confidently offer a hassle-free lifetime warranty on our sealed glass units. You'll get a clear view with Clera vinyl windows.

Health Smart Windows®

Energy-efficient windows guarantee lower energy bills, a lower environmental impact and, most importantly, a greener future. Every vinyl window Clera manufacture uses Hydraglass 50™ warm edge technology on Super Spacer® platform, by Quanex. These spacer systems make our windows even more energy-efficient, qualifying them as Health Smart Windows™.


Clera products are ENERGY STAR approved. Windows, doors and skylights — collectively known as fenestration products — are major source of heat loss in Canadian homes.

Laboratory Proven

Independent laboratory testing proves that vinyl windows by Clera Windows + Doors are among the very best available on the market today.