A Guide to FAKRO External Accessories: Awning Blinds vs Roller Shutters - Which Offers Better Heat Protection?

As summer temperatures rise, the upper floors of many homes can quickly become uncomfortably warm. Roof windows bring in plenty of natural daylight, but on long, sunny days, they can also allow heat to build up fast.

That is why we have developed a complete range of external roof window accessories designed to keep interiors cool, bright and comfortable. Two of the most popular options are the AMZ awning blind and the ARZ roller shutter, both designed to help you manage light, temperature and style with ease.

Why External Accessories Are Your Best Defence Against Heat

Many homeowners rely on curtains or internal blinds to reduce glare, but these solutions do very little to stop heat entering through the glass. The most effective way to reduce overheating is to prevent sunlight from reaching the pane in the first place, and that is exactly what external shading is designed to do.

By blocking sunlight before it reaches the glass, external accessories reduce solar gain and help rooms stay cooler and more comfortable, even during heatwaves. This is especially important in attic rooms and loft conversions, where sloping glazing is exposed to direct sunlight for long periods. External accessories also help protect interiors from UV damage and improve energy efficiency, as less cooling is needed to maintain a comfortable temperature.

The Contenders: FAKRO AMZ Awning Blind

The FAKRO AMZ awning blind is designed to stop excess heat before it enters the room. Fitted externally, it filters sunlight before it reaches the glass, reducing solar heat gain by up to 80%. This keeps interiors bright yet comfortably cool, replacing harsh glare with soft, diffused daylight.

Made from durable, weather-resistant fabric, the AMZ is available in manual, electric and solar-powered versions. When paired with Z-Wave smart home control, it can be programmed to respond automatically to sunlight or operate to a set schedule, making roof window heat protection effortless.

Ideal for living spaces and home offices, the AMZ awning blind allows you to enjoy natural light without the discomfort of direct sun.

The Contenders: FAKRO ARZ Roller Shutter

The FAKRO ARZ roller shutter offers a more robust approach to external shading. Made from strong aluminium slats, it fully shields the window from sunlight, noise and changing weather conditions. When closed, it provides complete darkness, making it ideal for bedrooms, nurseries and home cinemas where privacy, darkness and comfort matter most.

Its design also improves roof window insulation by creating an insulating air layer between the shutter and the glass. This helps keep heat out in summer and retain warmth in winter, improving energy efficiency throughout the year. It also reduces noise from rain and enhances window security. Available in manual, electric and Z-Wave-compatible versions for convenient smart home control.

For rooms where natural daylight and a lighter finish are preferred, the AMZ awning blind offers a more subtle way to improve comfort and control temperature.

Head-to-Head: The Definitive Comparison

When choosing the right external accessory, the finer details matter. Both the AMZ awning blind and the ARZ roller shutter are built with FAKRO’s signature quality and innovation, but each is designed to serve slightly different needs. Here is how they compare in the areas that matter most for everyday comfort and energy efficiency.

• Heat Protection: The Decisive Factor

When comparing awning blinds and roller shutters, both perform exceptionally well, but they manage heat in different ways.

The FAKRO AMZ awning blind reflects solar rays before they reach the glass, helping to maintain a cooler indoor temperature during prolonged periods of hot weather. The FAKRO ARZ roller shutter, by contrast, acts as a complete thermal barrier. Its insulated design helps prevent heat build-up and keeps room temperatures more stable throughout the day.

If your roof windows face south or west and overheating is a regular issue, the ARZ roller shutter offers the highest level of heat protection. However, if maintaining natural daylight is equally important, the AMZ awning blind provides a more balanced and light-filled solution.

• Light Control: Complete Blackout vs Comfortable Diffusion

The AMZ and ARZ differ not only in insulation, but also in the atmosphere they create indoors.

The FAKRO AMZ awning blind gently filters daylight to create a bright, glare-free interior. It is ideal for rooms where you want to maintain a connection to the outside while enjoying greater comfort.

The FAKRO ARZ roller shutter, on the other hand, blocks light completely, creating a darker, calmer space. This makes it particularly well suited to bedrooms, media rooms or any setting where restful sleep, privacy or reduced distraction is a priority.

• Noise Reduction, Security and All-Weather Protection

The FAKRO ARZ roller shutter offers more than just shade. Its solid aluminium construction helps reduce external noise, creating a quieter indoor environment when rain or wind intensifies. Its robust design also improves window security and provides added protection against harsh weather.

The FAKRO AMZ awning blind, by comparison, is focused on heat control and everyday comfort. Lightweight yet durable, it performs reliably in changing weather conditions while adding a softer, more understated finish to the window. Both options are designed for long-lasting performance and dependable daily use.

• Aesthetics and Preserving Your View

The FAKRO AMZ awning blind offers a sleek, contemporary appearance. When retracted, it is barely visible; when extended, it shades the glass without obstructing the view. It is an elegant solution for those who value natural light, openness and minimalist design.

The FAKRO ARZ roller shutter creates a more defined architectural look. Its clean lines and durable finish suit both modern and traditional homes, adding a stronger visual presence to the exterior.

Which Is Right for Your Room? An Expert Recommendation

Both options improve comfort, energy efficiency and control, but the right choice depends on how you use the room.

The AMZ awning blind is best for spaces where you want to reduce heat while keeping the room bright and naturally lit. The ARZ roller shutter is the better option where maximum insulation, blackout and privacy are the priority.

Choose the AMZ Awning Blind if…

• You want effective heat reduction without sacrificing daylight.
• You prefer soft, natural light and reduced glare.
• You are looking to keep a loft conversion cooler and prevent attic overheating.
• You value subtle design and modern convenience, such as solar-powered operation or smart home integration.
• You want to preserve your view and maintain a stronger connection to the outdoors.

Discover more options for accessories for roof windows.

Choose the ARZ Roller Shutter if…

• You need maximum heat protection and complete blackout.
• You want improved window insulation and enhanced security.
• You value a quieter interior with reduced noise from rain and wind.
• You want to improve energy efficiency throughout the year.
• You would benefit from the convenience of Z-Wave automation.

For complementary solutions, explore our roof windows and flat roof windows. Designed to perform in every season, they are a smart investment in comfort, security and long-term energy efficiency.