Why choose Alitherm 400 Windows

This versatile range of profiles can provide many solutions for residential and light commercial applications. It can create traditional casement windows inspired by the elegance and styling of timber products, or contemporary style windows designed for modern homes or offices.

The benefits of Alitherm 400 Windows are:

  • High Quality Affordable Aluminium Windows
  • Suitable for both Residential & Commercial
  • Stunning Appearance
  • Wide Range of Designs Available
  • System complies with revisions to Building Regulations
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High Quality, Yet Affordable

Designed to offer excellent weather resistance and featuring a ‘thermal break’ between the inside and outside frames to provide excellent insulation properties, all our systems allow you to enjoy the comfort of improved insulation as well as lower energy bills.

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Suitable for both Residential and Commercial

The Alitherm 400 profile is specifically designed to meet the requirements of refurbishment and renewal projects on listed buildings and in conservation areas. Ideal for Victorian and Art Deco projects, the range of commercial and residential windows and balcony doors are already proven in a wide range of renovation, refurbishment and heritage projects across the UK.

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Colour Options

Our unrivalled colour range provides the perfect finish for every property. From contemporary urban apartments to traditional Cotswold cottages. With a dedicated paint line, our colour-matched accessories service means your choice of handles and hinges can be finished in any colour to match or contrast with your door.
Black
#000000
RAL 7016
#494949
White
#FFFFFF
RAL colours
All

Personalise your Alitherm 400 Window

Dual colour available

Alitherm products are available in a choice of standard or non-standard colours, including dual colour where you have achoice of the same colour inside and out.

Choose your colour

Our unrivalled range of colour and finish options provides inspiration for all types of properties. From contemporary urban homes to traditional Cotswold cottages, we have the perfect colour to suit every project in any location.

Wide range of designs

Alitherm 400 windows are available in a number of formats for side and top hung open out windows suitable for both the residential and commercial markets.

Handles colours

Our Alitherm 400 range comes with a whole range of colour options including; white, black, chrome, satin and gold. Multipoint shootbolt locking fitted as standard. Option of cockspur handles.

Glass upgrades

The alitherm 400 range comes with a range of glass options 28mm to 38mm double or you can upgrade to triple glazed units to improve the u value of your window.

Made to measure

Each and every window is made bespoke to your needs. side hung windows offer a maximum width of 1000mm by 1400mm in height. Top hung 1400mm by 1500mm in height.

This versatile range of profiles can provide many solutions for residential and light commercial applications. It can create traditional casement windows inspired by the elegance and styling of timber products, or contemporary style windows designed for modern homes or offices.

Alitherm profiles utilise Smart’s innovative polyamide thermal break technology which creates a barrier between the cold air outside and the warm air inside. This technology significantly reduces thermal transmittance and enhances the overall U Value of a product and is designed to meet the exacting requirements of Document L 2010.

Alitherm products are available in a choice of standard or non-standard colours, including metallic, dual colour, Smart’s Sensations textured, and Alchemy anodised effect finishes.

  • British Standard Kitemarked system KM 81580 KM 81543
  • An enhanced system designed to comply with the revisions to the Building Regulations
  • Document L compliant
  • System can achieve Window Energy ‘B’ Rating
  • Profiles feature an extended polyamide thermal break to enhance thermal performance
  • Fabrication is by method of crimped or mechanical corners
  • Ovolo, chamfered or square profiles
Element Specification
Brand Alitherm
Material Aluminium Polyamide
Dual Colour Yes
Thermally Broken Yes
NBS Available Yes
Element Specification
WER Rating B
U Value 1.3W/m²K (using correct glass unit)
Document L Compliant Yes
Kitemark Yes
BS 6375-1:2009 Yes
BS 7950:1997 Yes
BS 4873 Yes
Element Specification
Side Hung Max Width (mm) 1000mm
Side Hung Max Height (mm) 1400mm
Top Hung Max Width (mm) 1400mm
Top Hung Max Height (mm) 1500mm
Glazing (mm) 28mm to 38mm double or triple glazed units
Frame Depth (mm) 59mm & 70mm
Element Specification
Fixed Max Width (mm) 1200mm (per sash)
Fixed Max Height (mm) 2500mm (per sash)
Fixed Max Weight (kg) 100kg (per sash)
Slide Folding Door Max Width (mm) 1200mm (per sash)
Slide Folding Door Max Height (mm) 2500mm (per sash)
Slide Folding Door Max Weight (kg) 100kg
Glazing (mm) 24mm, 28mm, 32mm, 34mm, 36mm
Frame Depth (mm) 70mm
Typical Sightlines (mm) 132mm
U Value 1.5W/m²K using 1.0 W/m²K centre pane
Air Class 4, 600Pa
Water Class E, 750Pa
Wind Class 4, 1800Pa
Document L Compliant Yes
BS 6375-1:2009 Yes
PAS 24:2012 Yes (Possible if Requested)