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Cortizo outward-opening casement windows in a brick bay

Cortizo Windows

Cortizo Casement

Outward-opening aluminium casements designed around familiar UK window arrangements.

  • Outward side-hung or top-hung opening
  • Standard and flush aesthetic options
  • Slim and heavy-duty sash choices
Enquire about this product aWindow Cortizo collection brochure

Product details

An outward opening, neatly framed.

Open aluminium casement leaves viewed from inside a bay windowView full size

Side-hung and top-hung openings make Cortizo Casement a practical choice for rooms needing outward ventilation. The system is developed for the UK market and can suit both contemporary buildings and more traditional elevations.

Standard and flush aesthetic options give different exterior details. Slim and heavy-duty sashes serve different opening sizes, so the largest published top-hung dimension is not a universal casement limit.

Your choices

Plan fixed lights and opening leaves.

Casement layout

Combine fixed glazing and opening lights around room use, access and the proportions of the facade.

Handles and fittings

Choose the handle style and any concealed fittings supported by the selected configuration. Explore the colour and surface samples below.

Colour & surface

Cortizo anodised finishes

Explore Cortizo’s 20-sample anodised colour chart. The wider collection combines 13 colours with surface treatments to create over 110 finishes.

Explore all 20 anodised samples

Confirm the reference, surface treatment, anodising class and availability for the selected system with a physical sample before ordering. Screen colours are indicative; handles, panels and inside/outside combinations are specified separately. Powder-coated examples include RAL 9016 White, RAL 7016 Anthracite Grey and RAL 9005 Jet Black. Metallic silver and selected wood-effect finishes can also be discussed.

Open a sample to explore the surface and save a preference for your enquiry.

Cortizo anodised finishes

Inside the construction

Look a little closer.

Open the drawings to inspect frame, glass and fixing details.

Standard & flush casement sections

Compare the standard and flush profile treatments shown in the drawing.

Standard & flush casement sectionsOpen full-size

Specification

At a glance.

Frame / sash depth
70 / 70 mm
Glazing range
23–44 mm
Heavy-duty top-hung maximum
Up to 1800 × 1800 mm; configuration-dependent
Thermal headline
Uw from 0.90 W/m²K in selected configurations

Compare your options

View all products

Your project

Set out the casements.

Mark the side-hung, top-hung and fixed panes on your window sketch. Include opening sizes and whether you prefer a standard or flush exterior detail.

Discuss Cortizo Casement