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Excellent thermal efficiency

Integrated thermal breaks deliver low u-values for the best energy efficiency.

Highly secure

Multi-point locking integrated as standard for the ultimate safety.

Made to suit your requirements

Engineered on a project-by-project basis, maintaining prompt turnaround times.

Choose from any RAL colour

A choice of over 150 RAL colours powder-coated, with dual finish options.

High-performance casement windows

The most durable and versatile choice for all casement window applications be they residential or commercial in nature, aluminium has quickly become the go-to home improvement material capable of delivering the high levels of insulation and security modern homeowners demand. Evaframe is proud to supply aluminium casement windows in three distinct industry-leading systems: SPW600E, Ali VU & Pure. All of which excel at balancing performance and style.

Making expert use of narrow sightlines made possible thanks to a meticulous manufacturing process, all aluminium casement windows utilise thermal enhancing qualities to render any property in which they are installed much more energy efficient. They can accommodate glazing thicknesses from 26mm to 56mm and can be created with a maximum size of 1500 x 1600mm to fit even the widest of apertures.

Facilitating a whole host of customisation options and over 150 RAL colours and finishes, aluminium casement windows from our range can be tailored exactly to your clients’ liking, letting tradesmen complete more jobs quicker and to a higher quality, no matter how bespoke.

Technical specifications

Pure System

  • Double/triple glazed up to 50mm
  • Powder-coated in single/dual colour
  • High performance gaskets
  • Unique patent pending PURe thermal break
  • Narrow sightlines
  • U-values as low as 0.71 w/m2K


  • Double/triple glazed up to 56mm
  • Powder-coated in single/dual colour
  • Flush faced aluminium profile
  • Polyamide thermally broken system
  • 600pa air permeability and water tightness
  • U-values less than 2.22 w/m2K

Ali VU

  • Double/triple glazed up to 44mm
  • Powder-coated in single/dual colour
  • Can attain U-values of 1.1 W/m2k
  • Equipped with quality polyamide thermal breaks
  • BS6375:1 accredited
  • Available with 38mm sightlines for maximum light entry

Why choose casement windows from Evaframe

Choosing Evaframe as your choice of aluminium casement window supplier means opting into a partnership that delivers high-quality products promptly, and with a high level of quality assurance. Those seeking to cater for the environmentally-conscious market can also rest easy knowing that casements engineered using 100% recyclable material can easily be supplied, giving you the edge over competitors.

Assuring installers and fitters have the easiest time possible when the time for installation arrives, all aluminium casement windows we provide are done so in accordance with BS 6375-1:2009. Achieving 600Pa for air permeability & water tightness, and 1600pa for wind resistance, through our supply you can keep focus on meeting customer expectations rather than dwell on technicalities.

You can also view our full aluminium product range here.

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Resources & Technical information

Browse our downloads for useful information about our range of aluminium windows and doors.

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Can’t find what you’re looking for or need some advice? Contact Evaframe today on 01633 848828

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