Alitherm Heritage - Casement Window
Verified by manufacturer 3 months ago
QA Certificate
Certificate type
Qualicoat approval
Certificate type
Secured By Design
Certificate type
BSI Kitemark
Certificate type
A modern aluminium thermally broken replacement to steel windows.
Application
It is the ideal solution for heritage applications such as listed building renovations and large-scale replica-refurbishment projects where planning constraints are to be considered.
Description
Taking inspiration from traditional steel windows, Alitherm Heritage features signature slim sightlines and attractive aesthetic contours coupled with polyamide thermal break technology giving Alitherm Heritage enhanced thermal performance and narrow sightlines.
Thermally broken, aluminium, side-hung, top-hung, fixed or tilt and turn, including a heavy duty vent option casement window system incorporating innovative polyamide thermal break technology, which creates a barrier between the cold air outside and warm air inside. This technology significantly reduces thermal transmittance and enhances the overall U-value of the product.
Alitherm Heritage is available in a choice of standard and non-standard colours, including metallic, dual colour, Smart’s Sensations textured, and Alchemy anodized effect finishes.
The Alitherm Heritage window is designed to be built as a series of horizontal modules which can be stacked using horizontal couplers to form a multi-part window featuring a specially designed drip bar between modules.
Features and benefits:
- An enhanced system designed to comply with the revisions to the Building Regulations (E&W), Document L compliant.
- BRE Green Guide A+ Rating.
- System can achieve Window Energy B Rating.
- Marine grade 1.4401 (316) marine grade stainless steel hardware option, along with Heritage and Art Deco.
- Polyamide thermal break provides enhanced thermal performance.
- Designed as a direct replacement for steel windows.
- British Standard Kitemarked system – KM 81580 and KM 81543.
General information
Color | Blue Bronze Brown Copper Cream Manufacturer guidanceStandard RAL colours and manufacturers own standard colour range available. |
Finish | Powder-coated |
Material | Aluminium |
Shape | Square Rectangle |
Length | Bespoke 864 mm 1400 mm 2100 mm |
Width | 70 mm |
Height | Bespoke 1400 mm 1500 mm 2100 mm |
Warranty description | 25 year Guidance for specification option: Warranty period for powder coating. |
Uniclass | |
CAWS | L10/25 Aluminium windows L10/330 Aluminium windows |
Product range |
Specification data - Aluminium window units
Standard | Manufacturer guidanceConsult manufacturer and insert requirement. |
Third-party certification | BSI Kitemark (BS 4873/PAS 24).Guidance for specification option: Certificate no.: KM 81580 (enhanced security aluminium window systems supplier). |
Dimensions and configurations | 300–700 x 1400 mm (maximum).Guidance for specification option: Side-hung: Insert requirement. 700 x 275–1400 mm (maximum).Guidance for specification option: Top-hung: Insert requirement. Manufacturer guidanceW x H. |
Product performance | |
Fire performance | |
Fire resistance | Manufacturer standard. |
Weather performance | |
UK exposure category | Manufacturer standard. |
Air permeability | To Class 4, 600 Pa. |
Watertightness | To Class 9A, 600 Pa. |
Resistance to wind load | To Class AE, 2400 Pa. |
Durability | |
Operation and strength characteristics | Manufacturer standard. |
Safety | |
Anti-ligature standard | Manufacturer guidanceConsult manufacturer and insert requirement. |
Security level | To PAS 24: 2022. |
Environmental | |
Background ventilation | Manufacturer standard. |
Acoustic performance rating | Manufacturer standard. |
Thermal | |
Whole window U-value | Maximum: 1.5 W/m²K, 1.0 W/m²K (using sealed unit). |
British Fenestration Rating Council Window Energy Rating | Can achieve Window Energy A Rating. |
Frame | |
Profile | Chamfered externally and flat internally (not flush). |
Finish as delivered | |
Coating | Marine quality powder coat. |
Colour | Guidance for specification option: Standard RAL colours and manufacturers own standard colour range available, consult manufacturer and insert requirements. |
Film thickness (minimum) | Manufacturer standard. |
Ventilator | Manufacturer standard. |
Glazing or infill | |
Standard | Manufacturer guidanceConsult manufacturer and insert requirement. |
Requirements | Guidance for specification option: Insert requirement, available 24–36 mm as double or triple glazed units. |
Hardware | Manufacturer standard.Art Deco.Heritage.Marine grade 1.4401 (316) stainless steel. |
Operation | |
Type | Manual.Motorized. |
Fixing features | Manufacturer standard. |
FrameDepth | 47 mm (59 mm sight line). |
Maximum weight | Maximum vent weight: 40 kg. |
Perimeter edge/ thermal break | Extended polyamide thermal break. |
Configuration | Fixed. Side-hung. Tilt and turn. Top-hung. |
Sustainability data
Country of material origin | Europe Guidance for specification option: Principally UK and EU suppliers. |
Country of product manufacture | United Kingdom |
Material | Aluminium |
BIM objects
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
Third party certifications
QA Certificate
Kitemark: Certificate: KM 81543
Qualicoat approval
Smart Qualicoat Certificate
Secured By Design
Secured by Design Certificate
BSI Kitemark
KM81580 Window Systems
Case studies
Commercial Heritage - Bristol’s Electricity House
Commercial Heritage - Colston Street, Bristol
Commercial Heritage - Joseph Black Building
Commercial Heritage - Lanchester Free School
Commercial Heritage - Purifier House
Commercial Heritage - Royal Mail, Mount Pleasant
Commercial - Plymouth City Market