No other
aluminium window
comes close…

Aluminium windows and doors are desirable for their aesthetics and durability but are often perceived to be too cold to put in our homes. Not anymore. Now there is a aluminium option that offers unparalleled warmth and insulation. Genesis WarmCore windows are 25% more thermally efficient than traditional aluminium systems. Available as casement or tilt and turn windows, and with a flush sash option that brings the outer frame perfectly level with the opening part of the window.


Genesis WarmCore windows come with superb security to keep you and your home safe and their thermal performance exceeds Building Regulations’ requirements and complies with PAS24 security.

Warm, Strong and Secure

With a U-Value of 1.3 when double glazed – below the Building Regulation requirement of 1.6 and a range of colour options available, Genesis WarmCore windows are the perfect way to bring the modern, sleek look of aluminium into your home.

  • 25% more thermally efficient than traditional aluminium systems
  • U-Value of 1.3 for double glazed windows
  • Multi-point locking for superior security
  • Colour and style options 
- Available in casement and tilt and turn styles with a flush sash option also available
Home Colours

Add choice
of colour

Genesis WarmCore windows come in a choice of 2 powder coated colours that can be used in combination where required, so if you want the grey aluminium look outside, but a fresher white appearance inside, with Genesis WarmCore windows, you can. There are also more colours available on request.


Innovation in

Genesis WarmCore windows have a unique full width thermal core that ensures the very best in thermal efficiency, with no compromise on design. Graf-welded for quality and precision, the Genesis WarmCore window is truly outstanding in its field.

Genesis Warmcore Window Gallery

WarmCore Windows in room

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