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

Brand Alitherm
Material Aluminium Polyamide
Dual Colour Yes
Thermally Broken Yes
NBS Available Yes

Window energy rating B
U Value 1.3W/m²K using correct glass unit
Air Class 4, 600Pa
Wind Class AE, 2400Pa
Water Class E, 1200Pa
Document L Compliant Yes
Kitemark Yes
BS 6375-1:2009 Yes
BS 7950:1997 Yes
BS 4873 Yes
PAS 24:2012 Yes

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
Frame Depth (mm) 59mm & 70mm