'Industrial Style' Steel Replacement Doors
Alitherm Heritage Steel Replacement Doors Featured on George Clarke's Old House New Home London Episode on Channel 4
Industrial Style Heritage Steel Replacement Doors – Aluminium that looks like steel!
Key Features
A fraction of the cost of steel
Ultra slim framework
Fully compliant with latest building regulations
Replicates the appearance of steel
0% Interest Free Credit available on Heritage Doors (T&Cs apply)
Approved replacement for listed buildings by many council authorities
Paint finish guarantee – 25 years
10 year Manufacturers Warranty
Rust proof
Alitherm Heritage Door
The steel replacement Alitherm Heritage glazing system has been designed to offer a solution for heritage properties and building renovation projects where there is a need for a modern aluminium replacement for old steel.
Replace your old drafty steel doors with modern secure, thermally efficient replacement steel door.
Replicate the appearance of traditional steel doors from a bygone quintessential Edwardian, Georgian era or chic Industrial style with classic glazing bars and panel designs to create a vintage look.
The Alitherm Heritage Door
Product Information
The Alitherm Heritage door serves as the perfect choice for replacing steel doors in heritage projects, including renovations and building conversions.
Whether restoring a listed building or enhancing a contemporary space with elegance, the Alitherm Heritage door brings timeless style while meeting the demands of today’s building regulations, providing a solution for conservation areas where planning regulations require a like-for-like product replacement.
The door profiles feature the system’s signature slim sightlines and elegant lines that complement our existing 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 Window Energy Rating of B (WER B) under the latest tougher June 2022 (Document L) building regulations when installed with our high specification double glazed unit.
Design Applications
Single or double external heritage doors
Balcony doors
Open out or open in
Available with fixed side and top lights
Features
Window Energy Rating of B (WER B)
Individual 28mm toughened double glazed units
Gasket glazed system
Multipoint locking with Avocet ABS cylinder
Traditional handle range and finishes
Made to measure design options
Our bespoke ordering service is second to none, but we also offer a Buy Online Service of our industry leading door products.
Buy Online Heritage Doors
READY MADE – BESPOKE – INTERIOR & EXTERIOR delivered in as little as 7 – 10 WORKING DAYS
Aluminium that looks like steel!
NOW WITH EASY PAY OPTIONS 
Marlin are the No:1 Supplier of Heritage Glazing in the UK
View all of our Heritage Glazing Products HERE
Get 0% Interest Free Credit on Heritage Doors
We’ve made getting the doors you love a whole lot easier
Transform your home and enjoy the benefits today. Set your budget and spread the cost.
Improve your home now with our payment options.
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.
Premium Security Fitted As Standard With Patented Active Cam Technology
The clever locking system of the Avocet ABS® diamond grade cylinder knows when it has been snap attacked and fires into action to create a robust barrier to entry. The patented Active Cam TechnologyTM is hidden deep within a solid Molybdenum cam which is 20% stronger than steel, and delivers ultimate resistance against a lock snapping attack and snap/twist manipulation. All of the snap technology is focused on the outside part of the lock only. This makes sure that maximum strength is given to the inner part of the lock – the part that has the job of securing your door.
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.
Latest projects
HERITAGE DOORS
Heritage Glazing – Grade II Listed Kingsley House Stamford
HERITAGE DOORS
Heritage Glazing – Idyllic North Yorkshire Village House
HERITAGE WINDOWS
Millhouses – Sheffield
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 energy efficient are your windows & doors?
All of our products are very thermally efficient; they meet and exceed all current building regulations.
Our aluminium profiles are thermally broken and benefit from high performance double glazing with a centre pane U Value of 1.2 W/m2 as standard. The maximum overall U value of any of our products is 1.6 W/m2, with many of our door and window products offering even lower U Values.
What information must be provided in order to get an accurate quotation?
We will ask you to provide the following information:
- Approximate dimensions (width x height)
- Basic design/layout
- Project location
How long will my quotation take?
We aim to return all quotations within 24 hours however large projects may take longer.
Come and explore…
Aluminium Bi-fold Doors, Sliding Doors, Contemporary Glazing, Aluminium Heritage Windows and Traditional Steel Replacement Doors
