Like any mechanical component, the belts – i.e. the belts that allow them to be opened and closed – require attention and periodic maintenance, especially if the roller blind is operated daily.
Contrary to what one might think, replacing the belt is not a task reserved exclusively for specialised technicians. With the right tools and a little manual skill, it is possible to do it yourself, solving the problem with a minimal investment of time and money. In this guide, we explain everything: from the best materials to the assembly steps, including the most useful technical tips.
Why it is essential to replace belts periodically
Roller shutters belts are constantly subjected to mechanical stress: every time they are raised and lowered, strain is placed on the belt, which, over time, can wear out, fray or lose elasticity.
When this happens, the mechanism becomes sluggish, noisy and, in the worst cases, stops working altogether.
A deteriorated belt can break suddenly, blocking the roller blind and requiring urgent repairs. Taking preventive action not only avoids further damage but also improves energy efficiency and comfort. A roller shutter that moves correctly helps to better insulate against heat, cold and external noise.
Replacing the belts also allows you to update the materials, choosing those best suited to your needs. Modern cotton, raffia and PVC options guarantee excellent durability and are compatible with most systems on the market.
The most reliable materials and the best performing alternatives
Choosing the right belt means taking into account strength, flexibility, durability and ease of installation.
The materials available on the market today offer solutions for all needs, from domestic contexts to those most exposed to atmospheric agents. Below we analyse the main ones.
Cotton belts: the classic, versatile and reliable choice
Cotton belts are among the most widely used and appreciated thanks to their excellent flexibility and ease of installation. Cotton guarantees good durability over time and performs well indoors, where it is not subject to extreme weather conditions.
The natural elasticity of the material allows it to easily absorb the mechanical stresses associated with the movement of the roller shutter. In addition, cotton belts are available in different sizes and colours, making them suitable for a wide range of applications. They are ideal for those looking for a compromise between durability and ease of installation.
Raffia belts: ideal for outdoor environments and harsh conditions
When it comes to strength, raffia – whether natural or synthetic – is one of the most resistant materials available. Its woven structure is designed to offer excellent tensile strength, maintaining its performance even after long periods of use.
Particularly suitable for damp areas or those exposed to the elements, raffia withstands humidity and temperature variations well. It is not affected by constant rubbing and, thanks to its composition, reduces the risk of breakage even under heavy stress. An excellent option for roller shutters exposed or installed in unprotected environments. Extremely resistant to wear, mould, water and chemicals, it is a long-lasting solution, ideal for residential, commercial and industrial applications.
PVC belts: maximum strength, minimum maintenance
Thanks to its smooth surface, PVC allows for smooth and silent movement, even with heavily used opening mechanisms. It is available in different thicknesses to suit manual and motorised systems and is perfect for those who want to minimise long-term maintenance.
The basic steps for replacing a belt correctly
Replacing a belt requires care, but it is not complicated at all. Just follow a sequence of precise steps, paying attention to each stage of the process. Good preparation reduces the margin for error and allows you to achieve a long-lasting result.
1. Prepare your work area
Make sure you are working in a safe and stable space. Get a sturdy ladder, protective gloves, a screwdriver, scissors or a cutter and, of course, the new belt you have chosen. Remove any obstacles around the window so you can work comfortably and safely.
2. Remove the roller shutter from the box.
Raise the roller shutter to its maximum opening point, then remove the box cover. Carefully unhook the fasteners that secure the roller shutter to the roller. Some models have hooks, others have screws or clips: check your mechanism before proceeding.
3. Remove the worn belt.
Locate the anchor point of the old belt, which may be secured with a knot or screw. Carefully pull it out and cut it if necessary. At this stage, it is useful to take a photo of the mechanism so that you have a visual reference when reassembling it.
4. Install the new belt.
Cut the new belt to the same length as the previous one (it is better to add a few extra centimetres). Secure the upper end to the roller and wrap it correctly. Then pass the other end through the belt guide and connect it to the spring winder. Ensure that the belt runs freely and without friction.
5. Reposition the roller shutter and test the system
Hook the roller shutter back onto the roller and close the box. Perform several opening and closing tests to check that the movement is smooth. If you notice any resistance or slowdowns, check that the tape is not twisted or incorrectly installed.
How to choose the most suitable material: a practical guide to decision-making
Every environment and every roller shutter has specific requirements. This is why it is important not only to know how to fit the belt, but also to make an informed choice about the right material for the context of use. Not all belts are the same, and the right choice can make the difference between a temporary solution and a truly lasting repair.
If you are looking for ease of installation and good durability indoors, cotton is often the ideal choice. In environments exposed to humidity, wind or extreme temperatures, raffia can offer superior resistance. When the goal is to reduce maintenance and achieve maximum longevity, PVC is unbeatable.
Always consider the thickness and compatibility with your existing roller shutter. Some models require thinner belts or belts with a certain elasticity, so it is useful to check the roller shutter's technical manual or consult a specialist retailer.
Where to buy reliable, high-quality belts
To ensure effective, long-lasting results, choose specialist retailers offering certified, high-quality products.
You can choose from different colours, lengths and widths, with detailed technical data sheets to help you find the model best suited to your type of roller shutter. Investing in quality materials means avoiding frequent replacements and significantly improving the efficiency of your system.
You can find your belts here: