Alitherm Heritage 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 aluminium steel replacements.
Replicate the appearance of traditional steel doors from a bygone quintessential Edwardian, Georgian or period style era with classic glazing bars and panel designs to create a vintage look.
I'd wholeheartedly recommend Marlin Windows. We ordered Steel Replacement French Patio doors and Windows. They are absolutely beautiful. And they were an absolute pleasure to deal with. Thanks Marlin!
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 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 Window Energy Rating of C (WER C) under the latest tougher June 2022 (Document L) building regulations when installed with our high specification double glazed unit.
Single or double external heritage doors
Open out or open in
Available with fixed side and top lights
Window Energy Rating of C (WER C)
Individual 24mm toughened double glazed units
Gasket glazed system
Multipoint locking with Avocet ABS cylinder
Traditional handle range and finishes
Made to measure design options
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.
...trumps the steel-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.
We used Marlin for windows and internal steel look doors and screens on our recent self build project.
Marlin are not local to us but provided an excellent service from quotation, advice, redesigns and with very detailed comms throughout.
The windows and doors are the talking point of our entire build. Adrian from Marlin said that windows become the eyes of the house and I didn't forget that - our eyes are simply stunning.
Would highly recommend.
From our initial contact with Marlin Windows we have been very impressed.
Super customer service, they actually answer the phone and call back promptly if they’re not available... very helpful throughout with technical advice.The final products... look stunning.
Our high quality window and door products are backed by the same high quality customer service. Technical advisors are just a phone call away to answer all your questions no matter how technical.
Typical help provided includes:
We provide a FREE sample service to assist with surveying decisions, design considerations, or planning applications – just pick up the phone and ask.
Click To Call
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.
|Alitherm Heritage Brochure
|Download (11.3 MB)
|Download (5.6 MB)
Section identification Guide
|Download (33.5 MB)
Product Data Sheet IMS123AH.201410
|Download (508 KB)
Supply only – Guide to installation