Steel Replacement Windows
Replace your old rusty, draughty steel windows with new rust proof thermally efficient aluminium. A fraction of the cost of steel.
The Alitherm Heritage steel replacement window system has been specifically designed as an ultra slim, thermally efficient and secure aluminium replacement for traditional steel windows. It is particularly suitable for openings with through stone work or where slim stone mullions and transoms require the framework to be as narrow as possible.
Key Features
Much lower in cost compared to steel
Optimum thermal efficiency to Grade B
Ultra slim framework ideal for fitting between stone mullions
Replicates the appearance of steel
Approved replacement for listed buildings by many council authorities
Rust proof
Paint finish guarantee – 25 years
Dual colour possible
10 year Manufacturers Warranty
The Alitherm Heritage steel replacement windows
The Alitherm Heritage window system is also the perfect solution for timber sub frame applications and is available with a choice of outer frame profiles to accommodate different timber rebates. With an authentic stepped aluminium profile and classic hardware options our Alitherm Heritage aluminium window system is the perfect choice to sympathetically replicate the style and timeless appearance of old steel windows from Edwardian, Georgian and period bygone eras.
The system has been specifically designed as an ultra slim, thermally efficient and secure aluminium replacement for traditional steel windows.
Product Information
Inspired by the aesthetics of traditional steel windows, Alitherm Heritage features signature slim sightlines and attractive contours making it the ideal choice for heritage building conservation areas where building regulations demand a like-for-like replacement.
Alitherm Heritage slim systems have already been approved as replacement windows for listed buildings by many councils.
All main profiles feature polyamide thermal break technology that enhances the thermal performance of the product, allowing Alitherm Heritage windows to achieve a window energy rating ‘B’ grade when fabricated with the correct specification and glazed unit. Profiles have a high quality powder coated paint finish at Smart’s state of the art paint facility in a choice of finishes, including single or dual colour, in a range of standard and non-standard colours.
Design Applications
Windows: fixed windows, side hung & top hung open out casement
Features
- Window Energy Rating ‘B’ – U Value 1.4 W/m2K (using sealed unit 0.9 W/m2K)
- 1.4 W/m²K with 0.9 centre pane U value
- Method of fabrication: corner crimping
- 28mm glazing
- Gasket glazed
- High security multi point locking
- Traditional Art Deco handles available
Technical Specification
General
| Product Type | Windows and Doors |
|---|---|
| Material | Aluminium Polyamide |
| Dual Colour | ✔ |
| Thermally broken | ✔ |
Performance
| Max width (door) | 900mm |
|---|---|
| Max height (door) | 2100mm |
| Max weight (door) | 60kg |
| Thermal suitability | ★★★★★ |
| Glazing | 28mm |
Locking options
| Multi-point | ✔ |
|---|
Building suitability
| Light duty | ✔ |
|---|
The grasp of the importance of design and quality of manufacture from the Marlin Team is second to none.
Helpful guides
IS ALUMINIUM A SUITABLE ALTERNATIVE FOR THE REPLACEMENT OF STEEL PRODUCTS?
Steel look Aluminium Windows, Doors and Internal Room Dividers and Doors look very similar to their Steel counterparts but offer several benefits of being Aluminium.
The benefits of modern, secure, thermally efficient aluminium windows with the heritage and character of traditional steel at a fraction of the cost.
Latest projects
STEEL REPLACEMENT WINDOWS
Shireburn House – Lancashire
STEEL REPLACEMENT WINDOWS
Grade II Listed Farmhouse
HERITAGE WINDOWS
Millhouses – Sheffield
COLOURS AND GLAZING
Our aluminium profiles are polyester powder coated by our systems suppliers using the very latest paint application techniques guaranteed for 25 years.
Fully compliant to the latest June 2022 building regulations our standard double glazing is the exceptional light transmitting, energy saving ClimaGuard® A+ low emissivity (Low-E) glass manufactured by Guardian Glass.
Why choose Marlin?
Reasons why you should expect 100% satisfaction.
Quality Control
We believe that our quality standards are unrivalled. Our manufacturing processes and activities are monitored with well defined controls and inspection procedures are performed by trained personnel.
Care
We respect you, your property and your project taking care over each detail from order to delivery to your post installation satisfaction.
Project Focus
Your project is important to us. We manufacture to your made to measure requirements so that we get it exactly right. See example case studies of our project work.
Frequently Asked Questions
If you require any support, please don’t hesitate to review our FAQ’s below or drop us a message on our contact form here
How slim is the Heritage frame?
The Heritage outerframe has a sight line of 33mm.
Is the Heritage system suitable for listed buildings?
The Heritage slim systems have already been approved for listed building projects by many councils including:
London Boroughs of Islington, Camden and Tower Hamlets, Watford Borough Council, Essex County Council and Leeds City Council as well as Cadw, the Welsh Government’s historic environment service.
What thermal rating does the Heritage system achieve?
Window Energy Rating ‘B’ – U Value 1.4 W/m2K (using sealed unit 0.9 W/m2K)
Come and explore…
Aluminium Heritage Windows,Traditional Steel Replacement Windows, Heritage Bifold Doors, Internal Heritage Doors.
