Heritage aluminium doors in Milton Keynes
Sheerline heritage aluminium doors
Key specifications
Sheerline Classic Heritage Door
- U-value 1.4 W/m²K
- Sightlines 60.5mm
- Max sash size 2.2m x 1m
- Opening In or out
The door we fit
Steel-look proportions, in aluminium that never needs painting.
We supply and install the Sheerline Classic Heritage Door across Milton Keynes and the surrounding towns. It copies the slim proportions of early twentieth century steel doors, but it is powder-coated aluminium, so it does not rust and it does not need repainting.
Sheerline build their own multi-chamber thermal core into every frame, which is how a door with 60.5mm sightlines still reaches 1.4 W/m²K double glazed. Single or French, with or without glazing bars, opening in or out.
- Single doors and French doors, with or without glazing bars
- Opening measured and checked before anything is ordered
- Fitted by our own installers, with a ten year guarantee
Configurations
Two decisions make the door.
First, single or French. Then how many glazing bars. These six are the stocked combinations. Bar spacing changes the character more than anything else, so it is worth looking at all three.
Single door
No bars, Anthracite Grey
Single door
2 bar, Pure White
Single door
4 bar, Jet Black
French doors
No bars, Agate Grey
French doors
2 bar, Cream
French doors
4 bar, Silver Metallic
The period details
Look at the lockbox and the bars.
Two things separate a heritage door from an ordinary glazed aluminium door. The first is the lockbox, a raised plate around the lock that copies the ironmongery on an original steel door. The second is the bar: stepped rather than flat, so it catches a shadow line the way a real glazing bar does.
Bars come in 25mm and 40mm, flat or stepped. On a cottage we usually go wider and fewer. On a Georgian elevation we go narrower and more, so the panes stay square. We will set the layout out on paper with you before anything is ordered.
Real homes
Heritage doors on real houses.
Wolverton and Northampton are our own installs; the rest is Sheerline photography of the same door. Click any image for a closer look. Swipe through finished doors. Tap any image for a closer look.
Where they work
Two jobs these doors do well.
Replacing something original.
If a house already has steel or slim timber doors, a chunky modern replacement reads wrong from the street. The Classic Heritage Door keeps the frame narrow enough that the opening still looks like it belongs to the house.
Giving a new room some age.
On a kitchen or garden room extension the bars do the opposite job. They stop a big glazed opening looking like a shopfront and give the new part of the house something to look at.
Inside the frame
Old proportions, current building regulations.
The reason we sell an aluminium heritage door rather than sourcing a real steel one is straightforward. A genuine steel door is a cold bridge. This one is not.
- Thermlock thermal break
- Sheerline use their own multi-chamber thermal break instead of the polyamide strip most aluminium systems use. They put it at close to double the insulation of polyamide. Paired with double glazing it gives the door a 1.4 W/m²K U-value.
- Patented corner joint
- The corners are cleated rather than welded, which keeps the frame square. Misaligned corners are the usual reason a slim door starts to bind after a few years.
- Matches our heritage windows
- The door was drawn to sit alongside our heritage windows, so the stepped face, colour and bars line up if you are doing the doors and windows together.
Security
Secured by Design, specified door by door.
Secured by Design is the police service's own standard, and the Classic Heritage Door meets it. It is a specification you choose, so you can put it exactly where it does the most good.
What a door needs depends on where it sits. A garden door inside a walled courtyard is a different job from a side door onto an unlit alley. A four bar door breaks the glass into five small panes, and a door with no bars is a single sheet at chest height.
So we come and look at the opening: where the door sits, what is behind it, who can see it from the road. You get a straight recommendation for that door, based on what we find.
Colour
Twelve standard colours, powder coated in the UK.
Anthracite Grey and Jet Black are the two we fit most often, and they sit well against brick and render alike. All twelve are powder coated in the UK on a Qualicoat approved line, so the finish is the same whichever you choose.
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Pure White
RAL 9010 Matt
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Hipca Gloss White
RAL 9910 Gloss
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Anthracite Grey
RAL 7016 Matt
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Jet Black
RAL 9005 Matt
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Cream
RAL 9001 Matt
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Agate Grey
RAL 7038 Matt
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Squirrel Grey
RAL 7000 Matt
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Pastel Turquoise
RAL 6034 Matt
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Chocolate Brown
RAL 8017 Matt
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Silver Metallic
Metallic effect
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Mid Bronze Metallic
Metallic effect
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Black Metallic
Metallic effect
You can have a different colour inside and out with no effect on the lead time, and we can match a colour beyond the twelve if you have something existing to work to. If you have a shade in mind, ask and we will tell you what is possible.
The set
The windows are the same system.
Sheerline drew the Classic window and the Classic door together, so the stepped face, the bar spacing and all twelve colours carry across. A door on its own next to older windows always looks like a door that was replaced on its own.
If the windows are coming too, even later, it is worth setting the bar layout now so both match. There is a planner on the windows page that draws it for you.
Door handles
Eight handle finishes on a long backplate.
The backplate carries the lever and the cylinder aperture together, so the lock and the handle are settled as one decision rather than two. The finish you pick runs through the letterplate, hinges and threshold as well.
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Black
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White
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Antique Black
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Anthracite
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Satin Silver
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Brushed Steel
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Chrome
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Gold
Which handles a door can take depends on the slab, the lock set and the colour package, so we confirm the exact hardware at specification stage. See the full handle specification
From our case studies
Heritage doors, photographed on the day.
Heritage aluminium doors, Wolverton
Two timber openings at the back of a Victorian terrace, replaced in jet black heritage aluminium, with the narrow one turned into a single wide leaf.
Read case study
Roof lantern and heritage doors, Northampton
A Sheerline roof lantern paired with black steel-look heritage aluminium doors on a brick extension.
Read case studyRequest a quote
Tell us about the opening.
You can price a heritage door yourself with the tool above. If your opening is awkward, or you would rather talk it through, send the details here instead and we will come back with a figure.
- A photo of the existing door or opening, if there is one
- Rough width and height, and whether you want single or French
- Anything you already know about the bars, colour or swing
What Milton Keynes homeowners say
Real reviews from real installations. Every one is public, so you can go and check them yourself.
Stuart Matthew
7 months ago
Fenster have just completed a front door installation on my new property - fantastic job and strongly recommend! The online design tool is great, Perry back at HQ is brilliant as is his communication. Andy, who installed the door, is a top gent and professional. Will definitely be a returning customer.
Read on Google
Joanna Hayes
2 months ago
Really happy with the service we received from Fensters Windows. Aaron and Shane turned up on time and were both really friendly. They explained any issues as they went along and talked us through the different options, which we really appreciated. They did a great job fitting our new back doors and cleaned up everything afterwards. We also paid exactly what we had originally been quoted, with no unexpected extra costs. Really pleased with our new doors and would definitely recommend Fensters Windows. Thank you Aaron and Shane!
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Digger
2 months ago
We have used Fensters for years on a variety of glazing work, and 2 door installations. They are competitively priced and responsive. They take great care over measuring and specifying the work, giving you a clear quote so you understand what you are getting (thanks Perry!). The fitters are all extremely competent and personable. We had to replace our front door for accessibility reasons, they gave us confidence that our requirements would be met, reproduced the intricate leaded and stained-glass pattern of our old door, and did a quality fitting job (thanks to Johnnie and Shane!). In summary they are our go-to suppliers for all replacement and repair work.
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Silvia Peraro
a month ago
I had an excellent experience with Fenster Glazing from start to finish. Nick Perry and David managed the initial quote to installation process seamlessly, keeping communication clear, honest, and completely stress-free. When it came to the actual fitting, Zac and Shane did a fantastic job with the installation, working efficiently and leaving everything spotless. The professionalism from the entire team was top-notch, and the final result looks brilliant. I highly recommend them.
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Bernie Raffe
3 months ago
Great service from Fenster Glazing, very happy with our new bi-fold door, glass door and windows (with built-in blinds) There was an issue with the wrong spec of glass provided to them from their supplier, so they had to temporarily board up a door and a window, but this was put right within a few weeks. Recommended, thanks.
Read on Google Zak Jessup 12 Jun 2025Cannot recommend higher! Nick and Perry were really helpful in getting my windows sorted ASAP.
Read on Google Norman Cummings 10 Jun 2025The best service ever, great workmen, very high standard and in the finish, excellent eye to detail.
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