A self-fit electric roller garage door kit lets you measure your opening, order online and fit the door yourself over a weekend, saving the cost of sending out a professional installer. If you are weighing up the best DIY roller garage door kits for 2026, the decision usually comes down to one number: the slat. A 55mm slat, or a 77mm slat. This guide compares TWF and Alluguard on that choice, and on what matters once the door is up: insulation, colour, warranty and how straightforward the kit is to fit yourself.
TWF makes two self-fit kits, the Standard 55 with 55mm slats and the Classic 77 with 77mm slats. Both are aluminium, come in a range of colours, and ship anywhere in the UK as part of our self-fit roller garage door kits range. Prices move with size, colour and controls, so rather than quote a figure that would date, we point you to the live price on the shop.
What a DIY roller garage door kit actually includes
A DIY kit is a complete door in flat-pack form. No fitter is sent to your house: the parts arrive, you follow the instructions, and you fit it yourself. Every kit is built to your measured opening, so the curtain and rails come cut to size rather than as a one-size-fits-all box.
A typical self-fit kit includes:
- The curtain, meaning the interlocking aluminium slats that roll up and down.
- The barrel and end plates that the curtain wraps around above the opening.
- The tubular motor, control box and remote controls that drive and hold the door.
- The guide rails that the curtain runs in on each side.
- The fixings, brackets and fitting instructions.
Because the door is made to your sizes, measuring the opening accurately before you order is the one job that really matters. Get it right and the rest is a methodical weekend task rather than a gamble.
The two slat sizes explained: 55mm vs 77mm
The “55” and “77” refer to the height of each aluminium slat in millimetres. Both are foam-filled and roll into a compact barrel above the opening, so the practical difference is not about how the door looks day to day. It is about span, strength and thermal performance: the wider and more exposed your opening, the more a thicker slat earns its place. Both the Standard 55 and Classic 77 come in a range of colours, so the slat decision is about the opening, not the finish.
When a 55mm slat is the right choice
A 55mm slat suits standard single garages and smaller openings. The curtain is lighter, which keeps the kit easier to handle during fitting, and it tends to be the more budget-friendly option. If you have a typical single garage on a sheltered elevation, the Standard 55 is usually all the door you need.
When to step up to a 77mm slat
A 77mm slat comes into its own on wider openings and more exposed elevations. The taller slat adds rigidity across the span, so a wide door flexes less and runs more smoothly, and the extra depth means a little more insulation against cold and noise. If your garage is a wide single, a double, or sits somewhere that catches the wind, the Classic 77 is the safer choice.
TWF vs Alluguard: DIY kits compared (2026)
Alluguard, part of Gliderol, makes a well-known range of insulated aluminium roller doors, including the Eco55 and Eco77. On paper the products sit in the same family as ours: aluminium curtains, foam-filled slats in 55mm and 77mm, a rolling design and a choice of colours. The table below lines them up on the points a DIY buyer actually weighs. We have kept the Alluguard entries deliberately general and pointed you to the manufacturer for anything that could change, because specifications and prices move and we would rather be fair than out of date.
Standard 55 and Classic 77 self-fit kits
TWF kits are designed and supported for DIY fitting from the outset. You get a door made to your measurements, foam-filled aluminium slats in 55mm or 77mm, a colour range, a tubular motor with remotes, and a 5-year warranty. Every kit ships across the UK, and the price for your size sits on the shop rather than buried in a quote.
Alluguard Eco55 and Eco77
The Alluguard Eco55 and Eco77 are insulated aluminium roller doors built around the same 55mm and 77mm slat sizes, and they are widely fitted and well regarded. Because Alluguard is typically supplied through installers and merchants, DIY availability, warranty terms and pricing vary by supplier, so always check the manufacturer’s current datasheet and your chosen supplier before you buy.
| Feature | Standard 55 | Classic 77 | Alluguard Eco55 | Alluguard Eco77 |
|---|
| Slat size | 55mm | 77mm | 55mm | 77mm |
| Sold as | DIY self-fit kit | DIY self-fit kit | Supplied door, check DIY availability | Supplied door, check DIY availability |
| Width options | Range of sizes, made to measure | Range of sizes, made to measure | Check current datasheet | Check current datasheet |
| Insulation | Foam-filled aluminium slats | Foam-filled aluminium slats | Foam-filled aluminium slats | Foam-filled aluminium slats |
| Colour options | Range, see shop | Range, see shop | Range, see maker | Range, see maker |
| Warranty | 5 years | 5 years | Check current warranty | Check current warranty |
| Shipped UK-wide for DIY | Yes | Yes | Check with supplier | Check with supplier |
| Price | See the shop for the live price | See the shop for the live price | Check current price | Check current price |
Alluguard figures are indicative, always check the manufacturer’s current specification and price.
Order Your DIY Kit
The honest verdict for a DIY buyer
If you are set on fitting the door yourself, the deciding factor is not the slat, since both brands offer 55mm and 77mm. It is how the product is sold and supported. TWF kits are built for self-fit, shipped anywhere in the UK, and priced openly on the shop, so you can see what your size costs before you commit.
The Alluguard Eco range is a good product, but it is generally routed through installers and merchants, which can make a genuine DIY purchase harder to pin down and the price less transparent. On slat construction the two brands are close, so choose on how you intend to buy and fit. For a homeowner who wants to measure, order and fit over a weekend, a kit designed for the job, with a clear price and a 5-year warranty, is the practical winner.
How much do DIY roller garage door kits cost in 2026?
There is no single price for DIY roller garage door kits, because a kit is made to your opening. Four things move the figure: the width and height of the door, whether you choose 55mm or 77mm slats, the colour or finish, and the motor and remote options you add. A wider double in a premium colour with upgraded controls costs more than a standard single in a stock finish.
As a realistic, indicative guide, self-fit kits tend to start from roughly £600 for a smaller door and rise with size and options. Treat that as a starting point, not a quote. For the exact figure for your size and colour, you can check the current kit price in the shop. Either way, buying a kit and fitting it yourself avoids the installation labour a fitted door carries, which typically adds a few hundred pounds on top.
Fitting it yourself: what a weekend install involves
Fitting a roller garage door kit is well within reach of a competent DIYer, and most people complete it over a weekend using ordinary tools. The most important step happens before you order: measuring the opening correctly, since the curtain and rails are made to those numbers. Our guide on how to measure your garage opening walks through the exact points to check so you order the right size first time. On fitting day you will need a drill, a spirit level, a tape measure, basic hand tools and, ideally, a second pair of hands to lift and hold the barrel.
In outline, you fix the side guides plumb and square, mount the barrel and end plates above the opening, hang and set the curtain, then fit the motor, control box and safety devices and run the door through its travel to set the limits. Powered garage doors sold in the UK are expected to meet the relevant safety standard, BS EN 13241, and to carry UKCA or CE marking, which is worth checking when you compare kits. Set the limits and safety edge carefully, test the manual override, and you have a smooth, secure door by the end of the weekend.
FAQs
Can you buy a roller garage door as a DIY kit?
Yes. TWF supplies self-fit kits that you measure, order online and install yourself, with the door shipped across the UK and no fitter sent out. Every kit arrives made to your opening with the motor, rails, fixings and instructions included, so a competent DIYer has everything needed to fit it.
What is the difference between the Alluguard Eco55 and Eco77?
The main difference is slat size: the Eco55 uses a 55mm slat and the Eco77 a 77mm slat, with the thicker 77mm suiting wider or more exposed openings and adding rigidity. TWF offers directly comparable self-fit kits in the same two slat sizes, the Standard 55 and Classic 77, if you want a DIY version of that choice.
How long does it take to fit a DIY roller garage door?
Most competent DIYers fit a kit over a single weekend. The key to a smooth job is measuring the opening accurately before you order, so the curtain and rails arrive at the right size, then working methodically through the guides, barrel, curtain and motor limits.
Do I need planning permission to replace my garage door?
Usually not. Replacing an existing garage door is normally treated as permitted development rather than something that needs planning permission, though listed buildings and some conservation areas can differ. Check your own property against the government’s Planning Portal or gov.uk guidance if you are unsure.
How much does a DIY roller garage door kit cost?
Prices vary with width, slat size, colour and the motor and remote options you choose, so there is no single figure. Rather than quote a price that would date, we keep the live cost for each size on the shop, where you can see exactly what your door will cost before you order.
Are DIY roller garage door kits insulated and secure?
Yes. The foam-filled aluminium slats give useful thermal and some acoustic insulation, and once closed the motor holds the curtain firmly in place, which resists being forced up. TWF kits come with a 5-year warranty for added peace of mind.
Order your DIY kit and fit it this weekend
A TWF self-fit kit is the straightforward route to a new roller garage door: measure your opening, order online, and fit it yourself over a weekend, backed by a 5-year warranty and shipped anywhere in the UK. Choose the Standard 55 for a standard single or the Classic 77 for a wider or more exposed opening, and you are set.
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