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Triangular, Shaped or Raked Windows

Bring dramatic light and clean geometry into your home with custom raked windows also known as triangle windows or gable windows. Designed to follow the angle of a pitched roof, these fixed or operable units offer a striking architectural statement while maximising natural light in hard to reach areas like vaulted ceilings or attic conversions.

Idealcombi can supply a range of different shapes as standalone fixed or opening windows or in combination with entrance doors or terrace doors.

 

What Are Raked Windows?

Raked windows are angular window units, often in triangular or trapezoidal shapes are tailored to follow the slope of a roofline or fit into a gable end. We offer fixed triangle windows and bespoke shapes to suit any modern or heritage design, allowing for seamless integration into your facade.

Why Choose Triangle or Gable Windows?

  • Architectural Elegance
    Add definition to lofts, open plan spaces, or gable ends with large triangle windows that frame the outdoors like a picture.

  • Custom Design Flexibility
    Every IdealCombi unit is made to measure. Whether you need triangle gable windows for a contemporary home or a bespoke angle to match a unique roofline, we tailor the shape, size, and finish to your specifications.

  • Thermal Performance
    Our composite timber/aluminium windows offer leading energy efficiency. All fixed triangle windows are built with idealcore™ insulation technology, helping to regulate indoor temperatures and reduce energy costs.

  • Durability and Low Maintenance
    With powder coated aluminium cladding and laminated timber interiors, our windows are built to last resisting warping, rotting, and extreme weather.

Projects Featuring Triangle Windows

Triangle fixed light with terrace doors
A trapezoid window alternatively aligned
Two large triangular windows paired with two small triangular windows with styling bars
Large gable window without transoms and mullions
A gable window screen with offset mullions
The famous triangular dormer windows of the Arts & Crafts House
Large Futura+ Fixed Windows
Half gable windows

Raked Windows FAQs

What are triangle windows called?

Triangle windows are often referred to as raked windows, gable windows, or pitched roof windows. These windows are custom shaped to match the slope of a roofline and are typically used in gable ends, loft spaces, or modern architectural designs.

What is the difference between a dormer window and a gable window?

A dormer window is built into a roof structure that projects vertically from a sloped roof, creating additional internal space and headroom. In contrast, a gable window is typically fixed into the triangular section of a gable wall, following the pitch of the roof. Dormer windows include a roof of their own; gable windows follow the roof’s existing angle.

How much does a gable window cost?

The cost of a gable window can vary significantly depending on size, shape, glazing, and frame materials. Custom triangle or raked windows tend to be more expensive than standard shapes due to bespoke manufacturing. For an accurate quote, we provides project specific pricing based on dimensions, finish, and thermal requirements. Speak to our team or call 01582860940 to find out more.

Do you need planning permission to put a window in a gable end?

In many cases, adding a window to a gable end may fall under permitted development rights, especially for single family homes. However, restrictions can apply depending on your property type, location, and whether the window overlooks neighbouring homes. It’s best to check with your local planning authority or your architect to confirm whether permission is required.