Single Prime Windows

Single prime (or half primes) are not only great for added insulation but are also used for balcony enclosures, Florida rooms, office pass thru windows, sunrooms, gazebos, barns, sheds, chip wagons, cottages, shipping containers, boat houses, etc.[br]

All window and glass insert frames are made of heavy gauge aluminum extrusion to provide longevity and strength. Available in 10 standard colours. Custom painting is offered.[br]

We also stock mounting and connecting channels for these windows, which will enable you to close in large areas.[br][br]

Our Single prime windows can be ordered in a variety of operating configurations.

  • Side slider
  • Vertical hung
  • Fixed
  • Fixed over slider (or vice versus)

Our 1 3/8″ single prime windows are available with a selection of glass options 3mm or 5mm thick, including clear, tinted, frosted, tempered, Lexan and art glass. We also offer 1/2″ thermo sliders for increased energy performance.[br]

Colours available: White, Black, Sandalwood, Cream, Pearl Grey, Comm Brown, Anodized, Choc. Brown, Antique Brown and Mill finish.[br]

Contact Varga Windows for further information @ 416-748-7027 or

Click here to view color swatches chart


Varga Windows aluminum Single Prime Windows (aka half prime) were designed for a variety of interior and exterior situations, Primarily made for and used as an additional protection for apartment windows made in the 50’s and 60’s which were single glazed windows. When our Single prime is installed it increases the energy performance and reduces heating bills as well as drafts and condensation build-up.[br]

Varga Windows Single Prime Windows are now used for a variety of situations such as pass-thru windows for food trucks and trailers, gazebos, cottages, offices, sunrooms, shipping containers and plenty more.


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