Sisalation FR405
In stock
R1 856,00 incl. VAT
Sisalation FR405 is a fire-retardant, double-sided reflective foil insulation designed for commercial and light industrial roofs. It reduces radiant heat, helps control condensation, and improves comfort under metal or tiled sheeting.
Est. Delivery: 20 July – 21 July
Sisalation FR405 Reflective Foil Insulation
Sisalation FR405 is a strong, fire-retardant reflective foil insulation manufactured for use under tiled or metal roof sheeting in light industrial and commercial buildings. It works as a radiant barrier, helping reduce heat entering the building from the roof while assisting with moisture and condensation control.
FR405 is commonly used in offices, schools, clinics, warehouses, mini-factories and similar structures where durable roof insulation and fire safety are essential. It meets the strict B–s1, d0 fire rating and the B/B1/2/H&V–SP&USP classification required for safe roof applications.
Key Features
- Double-sided reflective aluminium foil for radiant heat reduction
- Fire-retardant design for safe use in commercial & industrial buildings
- Helps improve indoor comfort by reducing heat transfer through the roof
- Assists with condensation control
- Strong, reinforced construction for long service life
- Lightweight and easy to handle on-site
- Suitable for installation under metal or tiled roofing
- Ideal for offices, mini-factories, clinics, schools and light industrial units
Technical Specifications
- Roll Length: 40 m
- Roll Width: 1250 mm
- Roll Size: 50 m²
- Effective Coverage: 44 m² (with 150 mm overlap)
- Recommended Overlap: 150 mm
Thermal Performance
- Downwards heat flow (no ceiling): R = 1.38 m²·K/W
- Upwards heat flow (no ceiling): R = 0.67 m²·K/W
Fire Performance
- SANS 428 classification: B/B1/2/H&V–SP&USP
- EN 13501-1 / SANS 53501-1: B–s1, d0
Physical Properties
- Mass per Unit Area: 185 g/m²
- Weight per Roll: ± 9.1 kg
- Tensile Strength (Longitudinal): 10 kN/m
- Tensile Strength (Transverse): 6 kN/m
- Burst Strength: 600 kPa
- Surface Emissivity: ≤ 0.05
Where Sisalation FR405 Is Used
- Light industrial buildings
- Offices and commercial units
- Schools and clinics
- Mini-factories and workshops
- Roofs with metal or tiled sheeting
- Projects needing a safe, fire-rated radiant barrier
- Buildings with no ceiling where heat and condensation need to be controlled
Installation Notes
- Install under roof tiles or metal sheeting
- Keep the shiny foil facing into the roof space
- Maintain the recommended 150 mm overlap
- Use galvanised straining wire at regular spacing to keep the membrane tight
- Apply double-sided tape at overlaps to ensure a sealed finish
- Ensure the product stays dry during installation
Why Choose Sisalation FR405
Sisalation FR405 is a reliable, cost-effective reflective foil that offers strong fire performance, high durability and good thermal improvement in commercial and light industrial buildings. Its combination of radiant heat control, long roll length and certified fire ratings makes it a preferred choice for architects, builders and contractors across South Africa.
Where to Go Next
- Return to the Insulation Overview → Insulation Guide
- Browse all applications → Insulation Applications
- Explore insulation by brand → Brands
- View all Sisalation options → Sisalation
- View roof insulation options → Roof Insulation
Delivery Information
At Insulation Warehouse, we provide fast, reliable delivery across our service network so you get the insulation you need without delays. We are an online insulation store and do not operate as a walk-in retail outlet. All orders are placed online, processed immediately, and delivered directly to your home, site, or business.
Delivery Timeframes
- Most standard orders are delivered within 1–3 business days
- Fast dispatch from our storage facilities
- Orders are shipped as soon as payment is received
Specialized Product Lead Times
A few specialized or less common items may require additional preparation before dispatch. These can include:
- Industrial densities
- Custom-sized or made-to-order insulation
- Foil-faced products
- Commercial or non-standard rolls
When these items require extra time, we’ll let you know the expected delivery window.
Delivery Network
We deliver insulation products throughout:
- Johannesburg
- Centurion
- Pretoria
These areas form our primary delivery network, ensuring quick turnaround times for homeowners, installers, and contractors.
We can also deliver to surrounding suburbs — just send us your address if you’re unsure.
Delivery Process
- Orders leave our storage facility once paid for in full
- Delivery updates and timelines are provided
- Large orders may arrive on pallets to ensure product protection
Fast, Reliable Service
Our goal is to provide the quickest, most convenient delivery service possible. Whether you’re insulating a home, office, or development, our streamlined logistics ensure your materials arrive safely and on time.
