Yes, aluminium roller shutters can get hot when exposed to direct sun, especially during summer. Aluminium is a metal, so it can absorb and transfer heat. How hot the shutter gets depends on the colour, finish, sun exposure, airflow, installation position and surrounding building materials.
For industrial and commercial properties, external aluminium roller shutters may be exposed to heat on shopfronts, service openings, warehouse entries, strata car park entries and external building openings.
Even though aluminium can heat up in direct sun, it remains a popular shutter material because it is lightweight, durable and resistant to rust.
Why Do Aluminium Shutters Heat Up in Summer?
Aluminium roller shutters heat up because they sit outside the building and are exposed to sunlight.
Several factors affect heat build-up:
- direct afternoon sun
- dark shutter colours
- low airflow
- large exposed openings
- metal cladding nearby
- concrete or asphalt surfaces
- limited shading
- external wall orientation
A shutter facing strong western sun will usually get hotter than one installed in shade or on a protected side of the building.
How Hot Can Aluminium Roller Shutters Get?
The surface temperature of an aluminium roller shutter can become noticeably warm or hot in direct sun. The exact temperature depends on the weather, exposure, colour and finish.
Dark colours usually absorb more heat than lighter colours. A dark external shutter on a sunny wall may feel much hotter than a light-coloured shutter on a shaded opening.
For industrial buildings, heat may also be increased by surrounding hard surfaces such as concrete yards, driveways, loading areas or metal wall cladding.
Do Aluminium Shutters Affect Indoor Temperatures?
Aluminium roller shutters can affect indoor temperatures in different ways.
When closed, an external shutter may help reduce direct sun exposure through a window, doorway or opening. This can reduce glare and limit some heat entering the building.
However, if the shutter itself becomes hot, heat may still transfer around the opening depending on the building design, insulation, airflow and how the shutter is installed.
For warehouses, factories and commercial properties, indoor temperature is usually affected by many factors, including roof heat, wall materials, ventilation, insulation, machinery, door openings and sun direction.
Are Aluminium Roller Shutters Good for Hot Climates?
Aluminium roller shutters can still be a good choice in hot climates when they are properly selected and installed.
They are commonly used because aluminium is:
- lightweight
- durable
- resistant to rust
- suitable for many external applications
- easier for motors to operate than heavier materials
- available in different finishes
- practical for many commercial and industrial openings
For hot or exposed locations, colour choice, finish quality and placement become more important.
Does Colour Affect Heat Build-Up?
Yes. Colour can make a significant difference.
Darker aluminium shutters usually absorb more heat. Lighter colours tend to reflect more sunlight and may stay cooler.
For external aluminium shutters on sun-exposed buildings, lighter colours may be a better choice if heat build-up is a concern.
This is especially relevant for:
- street-facing shopfronts
- external commercial shutters
- exposed industrial openings
- strata car park entries
- buildings with strong afternoon sun
- sites with limited shade
The selected colour should also suit the building exterior and finish system.
Ways to Reduce Heat on Aluminium Roller Shutters
Heat build-up can often be reduced by considering the full opening and building conditions.
Options may include:
- choosing lighter shutter colours
- selecting a suitable finish
- improving airflow where practical
- using shade structures where appropriate
- checking the shutter position
- considering building orientation
- maintaining the shutter finish
- keeping the shutter clean
- choosing the right shutter material for the site
For larger industrial openings, the shutter should be selected as part of the whole building access system, not just as a single product.
Do Aluminium Shutters Reduce Noise?
Aluminium roller shutters may help reduce some outside noise when closed, depending on the shutter design, fit, opening type and surrounding building.
However, they should not be treated as a complete noise-control solution. Noise reduction depends on the full building opening, gaps, wall construction, shutter profile and installation quality.
For industrial sites, noise may also come from machinery, loading operations, vehicles and other building openings.
Do Aluminium Shutters Insulate?
Aluminium roller shutters may provide some separation between the outside environment and the opening, but insulation performance depends on the shutter design.
Some shutters offer better thermal performance than others, depending on profile, construction and fit.
For commercial and industrial buildings, temperature control also depends on roof insulation, wall materials, ventilation, door openings and building layout.
Are Aluminium or PVC Shutters Better?
For industrial and commercial applications, aluminium is usually more suitable than PVC because it is stronger, more durable and better suited to external shutter systems.
PVC may suit some light-duty domestic applications, but it is usually not the preferred choice for warehouses, factories, loading areas or high-use commercial openings.
Aluminium offers a practical balance of weight, durability and external performance.
Do Aluminium Shutters Rust?
Aluminium does not rust like steel. This is one of the reasons it is often used for external shutter applications.
However, aluminium can still be affected by surface wear, finish damage, corrosion in harsh environments or poor maintenance. The finish, exposure and cleaning routine all matter.
Coastal, dusty or highly exposed sites may need more frequent checks.
Are Aluminium Shutters Expensive?
Aluminium shutters can cost more than some basic shutter options, but the final price depends on size, finish, motorisation, installation and site conditions.
For industrial and commercial applications, price should be considered alongside durability, weight, motor requirements, finish quality and long-term maintenance.
The best option is the shutter that suits the site, not simply the cheapest upfront product.
Summary
Aluminium roller shutters can get hot in direct sun because aluminium absorbs and transfers heat. Heat build-up depends on colour, finish, sun exposure, airflow, building orientation and surrounding materials. Darker shutters usually become hotter than lighter colours. Aluminium shutters can still be a good choice for hot climates because they are lightweight, durable, rust-resistant and suitable for many external commercial and industrial openings. Colour choice, finish quality, installation and maintenance all affect long-term performance.
