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What are Insulated Shutter Slats?
Insulated shutter slats are double skinned roller shutter profiles filled with an insulating foam core, designed to improve thermal efficiency, reduce noise transfer, and provide smoother operation compared to standard single skin slats. They are commonly used on roller garage doors, commercial shutters, industrial doors, and security shutters where temperature control, energy efficiency, and quieter performance are important. Insulated slats are available in both aluminium and steel options, with smaller profiles typically used for domestic and retail applications, while larger insulated steel slats are designed for wider industrial openings and higher security requirements.
Insulated Shutter Slats Information and Buying Guide
Types of Insulated Shutter Slats
Types of Insulated Shutter Slats
There are several different types of insulated roller shutter slats available, designed to suit varying opening sizes, security requirements, and thermal performance needs. The most common are insulated aluminium slats, which are lightweight, corrosion-resistant, and ideal for domestic garages, shopfronts, kiosks, and smaller commercial shutters. These are typically available in 44mm, 55mm, and 77mm profiles, with larger profiles offering increased strength and wider spanning capabilities.
For more demanding commercial and industrial applications, insulated steel slats provide greater strength, durability, and security. These heavier-duty slats are commonly available in 77mm, 95mm, and 100mm profiles and are designed for larger openings such as warehouses, factories, loading bays, and industrial units. Insulated steel slats are often specified where improved security and structural performance are required alongside thermal insulation.
Insulated slats are also available in different finishes and configurations depending on the application. Solid insulated slats provide maximum privacy, weather resistance, and thermal efficiency, while some insulated profiles can incorporate vision windows or glazing sections to allow natural light and visibility. The choice of slat profile will depend on factors such as door size, wind loading, frequency of operation, insulation requirements, and the level of security needed.
Guide to Roller Shutter Slats
Guide to Roller Shutter Slats
Roller shutter slats are the horizontal profiles that interlock together to form the shutter curtain. Over time, slats can become bent, dented, or damaged, often due to impact, attempted forced entry, or normal wear and tear. In many cases, damaged slats can be replaced individually, allowing the shutter to be repaired without replacing the entire curtain.
However, it is important that replacement slats match the original slat specification. Changing the slat profile, thickness, or material can affect how the curtain rolls on the barrel, the weight of the shutter, and how it travels within the guide rails.
How to Measure Roller Shutter Slats
How to Measure Roller Shutter Slats
When ordering replacement slats, two key measurements are required:
1. Cut Length (Slat Width)
The cut length is the width of the slat excluding the end locks.
This measurement represents the actual metal slat length before the end locks are attached.
2. Overall Width
The overall width is the full width of the slat including the end locks fitted on each side.
End locks help keep the curtain aligned within the guide rails and prevent the slats from moving sideways during operation.
Measuring Tips
Measuring Tips
To ensure accurate replacement slats:
- Remove one of the existing slats if possible and measure it directly
- Measure the cut length without the end locks fitted
- Measure the overall width including the end locks
- Identify the slat profile and height
- Check whether the slats are steel or aluminium
Providing clear photos and measurements can help ensure the correct replacement slats are supplied.
When Slats Can Be Replaced
When Slats Can Be Replaced
Replacing slats is usually possible when:
Only a small section of the curtain is damaged
The remaining slats are in good condition
The barrel, guides, and operating system are still functioning correctly
If the curtain has widespread damage or corrosion, replacing the entire curtain may be more practical.
Replacing roller shutter slats is often a cost-effective way to repair a damaged shutter, restoring both the appearance and security of the installation while avoiding the cost of a full shutter replacement.
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Frequently Asked Questions - Replacing Galvanised Steel Shutter Slats
1. What are the benefits of insulated roller shutter slats?
1. What are the benefits of insulated roller shutter slats?
Insulated shutter slats provide improved thermal insulation, reduced noise transfer, smoother operation, and increased durability compared to single skin slats. They are ideal for buildings where energy efficiency, climate control, and quieter operation are important.
2. What is the difference between insulated aluminium and insulated steel slats?
2. What is the difference between insulated aluminium and insulated steel slats?
Insulated aluminium slats are lightweight and commonly used for garage doors, retail shutters, and smaller commercial openings. Insulated steel slats are heavier duty, providing greater strength and security for larger industrial and commercial applications.
3. What size insulated slat do I need?
3. What size insulated slat do I need?
The correct slat size depends on the width and height of the opening, wind loading, usage frequency, and security requirements. Smaller 44mm and 55mm aluminium slats are typically used for domestic and retail shutters, while larger 77mm, 95mm, and 100mm insulated steel slats are designed for wider industrial openings and higher security applications.

