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Product Description

Fairview Thermal Linear 40 is a thermally broken double glazed aluminium window with ‘Thermal break’ technology. This ensures the aluminium is more robust to changes in temperature. Thermal windows are able to withstand the harshest weather conditions, but flexible enough to hold larger-sized glass panels. The combination of flush surfaces, square shapes and timber liners gives the TL40 suite a clean modern aesthetic. Best when a modern, flat aesthetic is required and/or where a standard liner finish is required, TL 40 is designed for residential environments where improved thermal performance is important.

TL40 blends seamlessly with the Fairview Architectural ranges for maximum design advantages and comes in a complete product range consisting of fixed and hinged options, including awning, casement, bi-fold and sliding windows, and stacking doors.

Glazing options - Glazing capability of 18mm to 30mm (min-max).

Features overview

  • Full range of mullions and transoms including internal box stiffening or external fins.
  • Square glazing bead options for optimal aesthetic appearance.
  • 15mm polyamide thermal break for thermal performance.
  • Hinge and bi-fold doors can be manufactured up to 2100mm height in most situations.
  • Hinged door panels available with 77mm stile and rail widths.
  • Bi-fold doors can be bottom rolling with the weight carried on the sill; or top hung when the lintel is designed to receive the door loads.
  • Sliding doors panels can span up to 2400mm height and 1500mm width, creating impressive openings. Heavy duty roller options manages panels up to 150kg.
  • Traditional New Zealand installation method using timber reveals.
  • Sashes can be added without expensive sub-frames. 
  • Heavy duty mullion options available.
  • Condensation evaporation channel.
  • 19mm weather facing flange.


  • Powdercoated: huge range of standard and non-standard colours.
  • Anodised: standard colour options are silver, black and bronze, 12, 20 and 25 micron thickness. Other colours and thicknesses are available. 
  • EUROWOOD™: a range of wood-grain finishes available.
  • 15 year powdercoating warranty on colour integrity and film integrity for use in most residential environments (excludes commercial, high-rise and marine usage). Some conditions apply.
  • Some colour considerations are required when selecting thermally broken joinery.

 Hardware - Alba, Stella and Verta hardware options available.

Technical and Environmental Benefits

Thermally improved windows provide the better energy efficiency and when combined with high performance glass solutions, the benefits are even greater. Depending on the size of the unit, Fairview Thermal Linear 40 products achieve optimum R-value results and WEERS stars (Window Energy Efficiency Rating System).

 Indicative R-value for Fairview Thermal Linear 40:

  • With standard clear glass IGU: R-value 0.31
  • With Low-e & Argon infill IGU: R-value 0.48
  • WEERS rating – up to 6 stars

 Performance and test standards:

  • Tested to both conventional design parameters: NZS4211:2008 and AS2047 and to specific design criteria where project requirements have demanded higher levels of performance. In some cases simulating wind speeds in excess of 300km/h to test ultimate structural strength. Specific design criteria based on configurations and site requirements.
  • Tested in an international accredited laboratory and complies with international accreditation NZS/ISO/IEC 17025:1999.

Manufacturer and Supplier Information - Fairview Windows

Fairview began in 1968 and is still proudly owned by the same Kiwi family today. A hands-on company driven by the same passion to go the extra mile for their customers. From simple renovations to bespoke architectural homes, every project is different; every one being unique. Fairview understand New Zealand conditions and building standards, and design products in accordance with this. 

Application and Purpose

High quality residential applications where improved thermal performance is important. Suitable for mid to high end homes. Best when modern, flat aesthetic is required and timber reveals are needed. Designed to be integrated with other Fairview Thermal or Fairview Architectural ranges for maximum design advantages.

Installation and Maintenance

Full details on installation and maintenance are available from Fairview Systems or their manufacturers. All warranties are subject to adherence to the Fairview Care & Maintenance Guide. In some instances documented proof of maintenance may be required.

Fairview provide an easy to follow Care & Maintenance Manual which includes full guidance for looking after the complete window and door system, including tips and advice for joinery, glass and hardware. Please click on the link for “Maintenance Manual” below the main image on this web-page to access this document.

Green Building Information Summary Sheet

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Fairview Windows