Sisalation Reflective Foil Insulation — Fire-Rated Radiant Barrier Solutions
When it comes to reliable roof insulation membranes in South Africa, Sisalation has built a reputation over decades for delivering durable, compliant and high-performance reflective foil insulation. Designed to reduce radiant heat transfer, improve indoor comfort, and provide effective moisture control, Sisalation products are widely used in residential, commercial, and industrial construction.
Sisalation FR405, FR430 and Sisalation Fireshield NC 502 represent the fire-rated range, engineered for environments where thermal performance and fire compliance are essential. These double-sided reflective foil laminates incorporate Aluminium foil, reinforcing scrim and specialised binders to create tough membranes that act as radiant barriers, vapour barriers and dustproof layers.
Installed beneath roof sheeting or tiles, Sisalation helps reduce summer heat gain while limiting condensation build-up, making buildings more comfortable and energy efficient throughout the year.
How Sisalation Foil Insulation Works
Reflective foil insulation works differently from bulk insulation. Instead of slowing heat flow through thickness, the Aluminium surface reflects radiant heat away from the roof space. When installed with the correct air gap, this reflective surface significantly reduces heat entering the building while also limiting heat loss during colder months.
At the same time, Sisalation membranes act as vapour barriers, helping to prevent condensation forming under metal roofs — a common issue in warehouses, factories and homes.
Sisalation FR405 — Light Industrial Fire Retardant Foil
Sisalation FR405 is an economical yet durable reflective foil laminate incorporating advanced fire-retardant properties. It is ideally suited for light industrial and commercial environments such as offices, clinics, schools and smaller factories.
This product provides reliable radiant heat reflection and excellent vapour barrier performance, helping maintain stable indoor temperatures while protecting building structures from moisture damage.
Key Benefits
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Fire-retardant reflective membrane
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Reduces heat gain and improves comfort
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Acts as a dustproofing layer
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Vapour barrier to reduce condensation
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Durable reinforced construction
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Suitable for roofs and side cladding
Typical Applications
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Offices
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Schools
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Clinics
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Warehouses
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Light industrial buildings
Sisalation FR430 — Heavy Industrial Fire Retardant Foil
Sisalation FR430 is a heavy-duty reflective foil insulation designed for demanding environments where durability and performance are critical. It incorporates advanced fire-retardant properties and reinforced construction to withstand industrial conditions.
This product is ideal for large commercial and industrial buildings that require a long service life and high strength, while still providing excellent radiant heat reflection and vapour control.
Key Benefits
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Heavy-duty reinforced membrane
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Superior tear strength
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Excellent dustproofing properties
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Fire retardant performance
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Long service life
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Ideal for large roof spans
Typical Applications
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Factories
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Warehouses
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Distribution centers
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Workshops
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Large commercial buildings
Sisalation Fireshield NC 502 — Non-Combustible Reflective Foil
Sisalation Fireshield NC 502 is the premium non-combustible option designed for buildings requiring the highest level of fire safety. This heavy-duty double-sided Aluminium foil radiant barrier is suitable for fire-sensitive environments such as hospitals, public buildings and high-risk industrial facilities.
Its reinforced construction provides excellent durability while delivering high reflectivity and moisture control performance.
Key Benefits
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Non-combustible fire classification
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High-strength reinforced membrane
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Excellent vapour barrier performance
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Suitable for fire-sensitive environments
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Long-lasting durability
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High thermal reflectivity
Typical Applications
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Hospitals
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Shopping centers
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Industrial plants
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Public buildings
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High-risk storage facilities
Fire Performance and Compliance
Fire performance is one of the most important considerations when selecting reflective foil insulation. Sisalation products are tested according to South African standards and carry recognised fire classifications.
FR405 and FR430 are fire-retardant membranes with classifications suitable for a wide range of commercial and industrial occupancies, while NC 502 offers non-combustible performance for higher-risk environments.
These products comply with national energy efficiency standards and building regulations, ensuring peace of mind for builders, contractors and property owners.
Energy Efficiency and Thermal Performance
Sisalation reflective foil insulation contributes to improved building energy efficiency by reducing heat transfer through the roof structure. With proper installation and air gaps, these membranes can achieve thermal resistance values around 1.38 m²·K/W depending on application.
By lowering heat gain in summer and reducing temperature fluctuations, Sisalation helps reduce reliance on heating and cooling systems, leading to lower energy costs over time.
Moisture Control and Condensation Protection
Metal roofs are particularly prone to condensation, which can lead to corrosion, mould growth and structural damage. Sisalation acts as a vapour barrier, helping prevent moisture build-up and protecting roof structures from long-term damage.
Durability and Long Service Life
Thanks to reinforced scrim layers and laminated construction, Sisalation membranes are designed for durability and tear resistance. This makes them suitable for roof insulation in demanding construction environments while ensuring long service life with minimal maintenance.
Why Choose Sisalation Foil Insulation
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Proven performance in South African conditions
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Wide range of fire-rated options
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Excellent heat reflection
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Moisture and condensation control
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Durable reinforced construction
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Compliant with building standards
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Suitable for residential, commercial and industrial use
Choosing the Right Sisalation Product
Choosing between FR405, FR430 and NC 502 depends on the building type and fire requirements.
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FR405 — Best for light commercial and general applications
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FR430 — Best for heavy industrial and large buildings
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NC 502 — Best for non-combustible requirements
Installation Considerations
For best performance, reflective foil insulation should be installed with the correct air gap and overlap as per manufacturer guidelines. Proper installation ensures optimal thermal performance and compliance with building regulations.
FAQS (High Ranking)
What is Sisalation foil insulation used for?
It is used under roof sheeting to reduce radiant heat transfer and control condensation.
What is the difference between FR405 and FR430?
FR405 is a light industrial grade, while FR430 is heavy-duty for large industrial buildings.
Is Sisalation 502 non-combustible?
Yes, NC 502 is designed for non-combustible fire performance.
Does this foil insulation reduce heat?
Yes, the reflective Aluminium surface reduces radiant heat gain.
Can these foils be used in homes?
Yes, FR405 can be used in residential and light commercial applications.
Does it act as a vapour barrier?
Yes, it helps prevent condensation under roofs.
Are these products compliant with building regulations?
Yes, it complies with South African standards.
What roll size does Sisalation come in?
Typically 1.25m x 40m rolls with about 50m² coverage.
Is The Product durable?
Yes, reinforced scrim layers provide strength and tear resistance.
Can it be used with bulk insulation?
Yes, it works well with glasswool or mineral wool.
Does it improve energy efficiency?
Yes, by reducing heat transfer through the roof.
Is it suitable for factories?
Yes, FR430 and NC502 are ideal for industrial buildings.
Does Sisalation help with condensation?
Yes, it acts as a vapour barrier.
Can it be installed under metal roofs?
Yes, it is commonly used under metal sheeting.
Which Sisalation is best for fire safety?
NC 502 offers the highest fire performance.
