Heritage aluminium windows and doors are designed to faithfully replicate the appearance of traditional Crittal steel windows. They are a popular choice in listed building and conservation area property renovations and meet all the requirements of current Building Regulations.
Smart Alitherm Heritage window and door systems can be specified as casement windows, tilt and turn or fixed windows, and can also be used to create single or double doors. They feature polyamide thermal break technology for enhanced thermal performance and can accommodate a single or dual colour powder coat finish with marine grade resistance as standard.
CDW Systems Limited manufacture and supply high quality aluminium window, door, and curtain wall products for trade installers across the UK. We manufacture a range of products to suit most applications using profiles from some of the most respected aluminium systems companies in the UK and we can provide glazing options if required. As well as traditional domestic applications, our products have been installed in a variety of commercial applications including the Education, Healthcare, Retail, and MOD sectors.
CDW Systems offer a flexible approach to trade supply. From small-scale projects for a single window or door, to full commercial contracts.
| Frame depth | 47mm |
| Appearance | Slimline profiles with Heritage and Art Deco hardware options |
| Locking | Face-mounted shoot bolts and multi-point locking |
| Glazing | 24, 28, 32, & 36mm double or triple glazed units |
| Window Energy Rating | B |
| Certification | British Standard Kitemark KM 81543 & KM 81580, Security tested to PAS 24:2016 (casement windows & fixed lights only) |
The Smart Alitherm Heritage range is designed as a replacement for traditional steel windows. A series of horizontal modules are stacked using horizontal couplers to create a multi-part window. A specially designed drip bar is used to enhance weather protection.
Alitherm Heritage doors are tape or gasket glazed with a maximum sash width of 900mm and a maximum sash height of 2100mm.
Alitherm Heritage windows can be top hung, or side hung with a maximum height of 1400mm (both configurations) and a maximum length of 1400mm (top hung) and 600mm (side hung)
Smart Alitherm Heritage windows and doors are the perfect choice for both period property renovation projects and large-scale replica refurbishments.
They can achieve U-values as low as 1.5 W/m²K and achieve a ‘B’ rating for thermal efficiency performance.
They are compliant with Building Regulations Document L and can be specified with a range of textured and anodised finishes.
Enquire about our Smart: Alitherm Heritage windows and doors
The 58BW ST HI Steel Window combines the classic aesthetics of steel with the superior performance of aluminium.
Ideal for heritage and listed buildings, this system offers slim sightlines, excellent thermal and acoustic properties, and enhanced security.
Perfect for replacing existing steel windows, it maintains the traditional appearance while providing modern benefits, making it an excellent choice for both designers and homeowners.
| Frame Depth | 58mm and 70mm |
| Appearance | Replicates narrow sight lines of steel windows, with four sash profiles for design versatility. |
| Locking | Accommodates standard hardware, including friction stays and shoot bolt locking, for enhanced security. |
| Glazing | Supports up to 32mm glazing units, ensuring superior thermal and acoustic performance. |
| U-Value | 1.4 W/m²K (Double Glazing), 1.2 W/m²K (Triple Glazing) |
| Certification | Secured By Design certified and PAS 24 tested. |
The 58BW ST HI Steel Window profiles feature a unique polyamide thermal break design for improved performance. With integrated deep head profiles for easy trickle ventilation and the option for internal or external beading, these profiles offer versatility and ease of installation. Available in single or dual colour polyester powder coating, texture, and anodised finishes, they provide both aesthetic appeal and durability, making them ideal for various architectural styles and project requirements.
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