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Alitherm Heritage has been designed to offer a solution for heritage properties and building renovation projects where there is a need for a modern replacement for old steel.

Replace your old drafty steel doors with modern secure, thermally efficient steel replacements.

Replicate the appearance of traditional steel doors from a bygone era with classic glazing bars and panel designs to create a vintage look.

 

Aluminium Steel Look Heritage French Doors installed in York

Key Features

  • Aluminium that looks like steel
  • Approved replacement for listed buildings by many council authorities
  • Ultra slim framework
  • A fraction of the cost of steel

 

 

Rated 5.0 out of 5 Myar Craig-Brown

I'd wholeheartedly recommend Marlin Windows. We ordered Aluminium Steel replacement 'crittal' type French Patio doors and Windows. They are absolutely beautiful. And they were an absolute pleasure to deal with. Thanks Marlin!

 

Read this and our other 5 star reviews left on Google

 

Product Information

The Smart Alitherm Heritage door is the ideal replacement for steel doors on heritage applications such as building renovations or apartment conversions.

The Alitherm Heritage door provides the solution for conservation areas where planning regulations require a like-for-like product replacement.

Alitherm steel replacement door
Alitherm steel replacement door profile

Alitherm Heritage door profiles feature the system's signature slim sightlines and elegant lines that complement Smart's existing Alitherm Heritage window and mimic those of steel doors.

The system has all the advantages of modern aluminium profiles that feature polyamide thermal breaks, allowing the system to achieve a U Value of 1.6 W/m2k when installed with a suitable sealed unit.

Alitherm steel replacement double door
Alitherm steel replacement double door profile

 

Design Applications

External single or double open out heritage doors
Balcony Doors
Internal partition wall doors

Features

Window Energy Rating ‘A’ – when using correct profile, glass unit & spacer bar
Thermal performance
1.6 W/m²K with 1.2 centre pane U value
1.4 W/m²K with 0.8 centre pane U value
Method of fabrication: corner crimping
24mm double glazed unit
Tape or gasket glazed
Multipoint locking
Traditional Art Deco handles available

internal steel look heritage partition doors

INTERNAL STEEL LOOK GLASS ROOM DIVIDER PARTITIONS

WHY BUILD A SOLID WALL WHEN YOU CAN HAVE A GLAZED PARTITION?

Exclusive to Marlin Windows a fantastic solution for separating living spaces with a run through floor finish.

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Rated 5.0 out of 5 Andrew Beevers

...trumps the 'Crittall' type systems on thermal performance and cost.
The grasp of the importance of design and quality of manufacture from the Marlin Team is second to none.

 

Read the rest of these and our other 5 star reviews left on Google

 

period crittal style steel look heritage bifolding doors

AND NOW INTRODUCING

NEW STEEL LOOK HERITAGE BI-FOLD DOORS

Combine retro steel style with modern strength and exceptional thermal performance

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Glazing and frame colour choice

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.

SGG Planitherm sealed glass units complete our leading combination of products and finishes.

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Document Downloads

File Type Document Description Download Document
Adobe PDF Alitherm Heritage Brochure
Brochure
Download (11.3 MB)
Adobe PDF Alitherm Products
Brochure
Download (5.6 MB)
Adobe PDF Alitherm Heritage
Section identification Guide
Download (33.5 MB)
Adobe PDF Alitherm Heritage
Product Data Sheet IMS123AH.201410
Download (508 KB)
Adobe PDF Alitherm Heritage
Supply only – Guide to installation
Download (403kb)

The Buyers Guide To French Doors

guide to how to aluminium french doors

Read our guide to buying french doors for your home

Replacing Windows In A Listed Building

Read our guide to replacing windows in listed buildings

Read our guide to listed building window replacement

Replacing Windows In Conservation Area Properties

Read our guide to replacing windows in conservation area buildings

Read our guide to conservation area property window replacement

 

Why Choose Marlin Windows?

We care...

about the quality of finish
about you, your project and your property
about your 100% satisfaction

And we are rated ★★★★★ on Google

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"our builder said they were the best supplier and fitter they had ever used"
Mrs Nellist Haworth, Yorkshire

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