• greenhouse-window
  • greenhouse window

To Solve:

› Water infiltration
› Temperature fluctuations
› Difficulties to clean
› Problems of rot

We are specialized in the transformation of greenhouse windows.
With insulated roof, structure and windows rated ENERGY STAR®. All conform to the Building Code of the Quebec.

Our advisors will propose a new option to your greenhouse window that will fit perfectly to your home. Custom Made.

Greenhouse Windows

You have water infiltration problems in your greenhouse window, normal with our hard winters, melting snow and heavy spring rains, all conditions are right for infiltration !

Temperature impossible to control; the unit itself is fully glazed and is always outside the home and therefore subject to extreme temperature fluctuations and no energy saving.

You have doubts about the presence of rotting in your walls, act quickly before the situation worsens.

Our solution; The complete transformation of your Greenhouse Window.

We will do the complete repair of the wall if the water infiltration caused rot, and we will rebuild a new structure with insulated conventional roof and the windows of your choice, all perfectly suited to your home.

Product Info

  • Structure



    greenhouse window transformation

    Repairing the walls of your home

    Replacing all materials damaged by water and rot.

    New structure that will replace your greenhouse window

    Foundation (if necessary)
    • Screw piles, insulated with urethane.

    • Structural and isolated extruded aluminum columns.
    • Fenestration of your choice with removable mosquito net.
    • Coating of your choice, fitting to your home.

    Insulated conventional roof
    • Conventional timber frame with roof truss.
    • Custom built, harmonizing with existing home.

    The dimensional effect will be kept inside the house.
    You will lose a little brightness, but will gain a lot of peaceness!

  • Fenestration

  • Options

  • Energy Glass


    Robover Thermos

    All our windows are made with thermos glass, double or triple glazed sealed units with an insulating interlayer.
    Additional Options: Stain, Frosted, Reflective, Tempered, etc.
    ROBOVER glass was selected for its behavior in Quebec's hard climate.
    More info on Robover glass

  • Warranty


    Warranties on our products

    Warranties on Concerto Windows sold by Portes et Fenêtres 440 inc. and fabricated by Portes & Fenetres ABRITEK inc. cover a predetermined period starting from the date of purchase, upon presentation of proof of purchase:
    See full warranty

    Portes et Fenêtres 440 offers a 5 year limited warranty on the construction and installation of its greenhouse window transformations.

    20 years White PVC Extrusions
    20 years Thermos sealed Units - Energy glass with argon gas
    10 years Paint
    Casement/Awning: LIFETIME
    Others: 10 years