Roller shutter doors for homes and shops: types and how they work

Updated November 2026 by Noah Heymans, Fabrication Supervisor & Draftsman.

A roller shutter door is a curtain of steel slats that rolls onto a drum above the opening and runs down two side guides. Choose the type by how heavy the curtain is and how often it opens: manual for small, quiet openings, chain or crank for heavier curtains, electric for large or busy ones.

How does a roller shutter door work?

Five parts do the work. The curtain is a run of interlocking slats. It rolls onto a barrel, or drum, mounted above the opening. Two guides, one on each side, keep the curtain in line as it moves. A balance system takes much of the curtain's weight, so lifting it stays practical. A lock holds the curtain down when it is closed.

Because the curtain coils above the opening, a roller shutter takes no floor space and no ceiling space. That is why shops, workshops and store rooms use them.

What types of roller shutter door are there?

There are four, and the difference is how the curtain is lifted.

With a chain, someone has to stand at the shutter to work it. If that does not suit, compare the crank and electric shutters.

Are roller shutter doors a good idea for a home?

Yes, for the right opening. At home they secure store rooms, back doors, workshops and outbuildings, where a solid steel curtain matters more than looks. A manual shutter needs no wiring and no motor maintenance.

For a garage, compare our roll-up garage door, which works on the same drum principle and keeps the ceiling clear. For windows, patios and sliding doors where you want air and light while locked, a louvre security shutter is the better fit. Louvre Security Shutters carry a 3-year warranty.

Which roller shutter suits a shop front?

Start with how often the shutter runs. A shop opened in the morning and closed at night can use a chain or crank shutter. A shop front that opens through the day, or a wide curtain, needs a motor.

Then choose the curtain. Solid slats close the front fully. Perforated slats let air through and give a view into the shop after hours. Vision-style sections keep a display visible. Your quotation confirms the profile.

On electric shutters, safety devices are specified with the motor: photocells, safety edges or an emergency stop, depending on how the shutter is used. We tell you which at the site visit. Our business buyer's guide covers loading bays and high-cycle doors.

What happens in a power cut?

Manual, chain and crank shutters work without power. On an electric shutter, battery backup is an option, and the quotation states the manual release and the motor's warranty. If the shutter secures a shop or a dispatch area, ask for both explicitly.

What do you measure for a roller shutter?

We take the width and height of the opening, the headroom above it for the drum, the side room for the guides, and where the handle, chain or controls will sit. We also ask how many times a day the shutter will run on a normal day and on a busy one. Those answers decide the curtain, the balance and the operation. Every shutter is made to the measured opening, so there is no standard size to choose from.

Which finish should I choose?

Steel parts can be powder coated, or hot-dip galvanised with powder coat on top. Inland and under cover, powder coat is enough. On coastal sites, or where the shutter faces the weather, choose galvanised guides and rails. Galvanising or a non-standard colour adds about a week.

How long do they take, and what is the warranty?

Our roller shutter doors are made in our Alrode and Lusaka factories in 15 to 21 working days. The Manual, Chain, Crank and Electric Roller Shutter Doors each carry a 2-year manufacturing warranty. On the Electric Roller Shutter Door that warranty covers the door, and the motor carries its own terms. Lubricate the moving parts every six months and wash the curtain twice a year, as our terms require.

What does a roller shutter door cost?

Each one is quoted to the measured opening. The size, the curtain, the operation, the motor and safety devices, the finish and the installation are separate lines, so you can see what each choice adds. Prices include VAT. The quotation is valid for 7 days. Standard payment is a 70% deposit and 30% on installation, and paying 100% upfront earns a 7% settlement discount. In South Africa our Alrode teams measure and install, and in Zambia our Lusaka team does. In the other markets the Robo Door distributor installs, and supply-only is available everywhere. The full range is on the roller shutter doors page.

Next step

Send us the opening size and how many times a day the shutter will run, and we will quote manual, chain, crank or electric. Request a free quote, WhatsApp +27 82 888 1919 or call 082 888 1919.