Alitherm Heritage
Windows & Doors
Heritage Doors & Windows
Our slimline Heritage Aluminium Window and Door system is a great alternative to costly steel windows and doors. The same industrial or heritage look can be achieved but with far superior thermal values.
The Heritage system provides the ideal solution for heritage applications such as listed building renovations and large scale replica-refurbishment projects where planning constraints are to be considered.
The window and door system is designed to be built as a series of horizontal modules which can be stacked using horizontal couplers to form a multi-part window or screen featuring a specially designed drip bar between modules.
We offer a range of transom options from the standard fixed transom to Fenstra Overlap Astragal Bars with Floating (Island) Lockblocks.

Product Details
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MaterialAluminium Polyamide
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Dual ColourYes
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Thermally BrokenYes
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NBS AvailableYes
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WER ratingB
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U Value1.5W/m²K using 1.0 W/m²K centre pane
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Doc L CompliantYes
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BS6375-1:2009Yes
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BS4873Yes
Description
Alitherm Heritage 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 Heritage 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.
Please note, Alitherm Heritage has been tested to PAS 24: 2016 for casement windows and fixed lights only.
Alitherm Heritage Window: Design Limitation and Performance
- Security tested to PAS 24:2016 (casement windows & fixed lights only)
- Weather tested to BS 6375 Part 1:2009
- British Standard Kitemark KM 81543
- British Standard Kitemark KM 81580
- Fixed windows,tilt turn, side hung or top hung open out casements
- Polyamide thermal break provides enhanced thermal performance
- Designed as a direct replacement for steel windows
- Single or dual colour, marine quality polyester powder coat as standard
- 316 Marine Grade Stainless Steel Hardware options
- Heritage and Art Deco hardware options
Special Hardware Options

Art Deco Door Handle

Art Deco Window Handle

Monkey Tail Window Handle

Bulb End Window Handle


Black Heritage Aluminium Doors

Heritage Curved Head Windows
Dimensions
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Side Hung Max Width
600mm
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Side Hung Max Height
1400mm
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Top Hung Max Width
1400mm
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Top Hung Max Height
1400mm
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Fixed Max Width
2100mm
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Fixed Max Height
2100mm
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Single Door Max Width
900mm
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Single Door Max Height
2100mm
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Glazing
24, 28, 32 & 36 double or triple glazed units
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Frame Depth
47mm
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Typical Sightlines
59mm
Downloads
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Smart Systems Alitherm Heritage Doors and Screens
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Smart Systems Alitherm Heritage Doors and Screens
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Internal Heritage Single Door with Goal Post Frame
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Alitherm Heritage Internal Double Doors
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Alitherm Heritage Curved Head Windows
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Aluminium Heritage Double Doors and Sidelight
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Aluminium Heritage Double Door Screen
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Grey Heritage Kitchen Doors and Windows
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Floating Lockblock Heritage Aluminium Doors
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Black Heritage Curved Windows
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Alitherm Heritage Windows
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Black Heritage Windows
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Black Aluminium Curved Head Window
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Black Heritage Windows
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Black Heritage Windows at Old Town
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Black Heritage Windows at Old Town
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Heritage Doors
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Heritage Bifold
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Grey Heritage Bifold Doors in our Showroom
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Heritage Bifold with 20mm Astragal Bars
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Showroom Heritage Doors, Bifold and Patio
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Showroom Heritage Doors and Windows
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Fenestra overlap astragal bars
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ALC002 Bronze Externally Beaded Heritage Window and 25mm Astragal Bar