Izocam Type 400 Roof Blanket | High-Density Glass Wool Insulation (100–140 mm Thickness)

26/06/2026

Izocam Type 400 Roof Blanket | High-Density Glass Wool Insulation (100–140 mm Thickness)

Izocam Type 400 Roof Blanket: Superior Thermal Insulation with High-Density Glass Wool

Izocam Type 400 Roof Blanket is a flexible roofing insulation material made from high-density glass wool. It is specifically designed for metal and pitched roof systems to deliver high energy efficiency, fire safety, and long-lasting performance.

Thanks to its A1 non-combustible classification, it does not contribute to flame spread in case of fire. It provides both thermal and acoustic insulation, ensuring indoor comfort and safety at the same time.

Product Description

Type 400 Roof Blanket is a high-density glass wool insulation mat produced by bonding molten glass fibers with special binders.

It is developed for metal and pitched roofs, and its high thermal resistance (RD) helps significantly reduce energy losses. Its flexible structure allows easy placement between rafters, ensuring gap-free insulation performance.

Technical Specifications – Type 400

PropertyValue
MaterialGlass wool
Thermal conductivity (λD)0.040 W/mK (at 10°C)
Reaction to fireA1 (non-combustible)
Thickness options100 mm – 140 mm
Standard width1200 mm
Length100 mm → 8 m, 120 mm → 6 m, 140 mm → 6 m
Thermal resistance (RD)2.50 – 3.50 m²K/W
Water vapor diffusion resistance (μ)1
Densityapprox. 24 kg/m³

These values are based on technical datasheets and confirm that the product belongs to a high-performance insulation class.

Applications

  • Pitched roof and attic insulation
  • Metal roofing systems
  • Sandwich panel underside applications
  • Prefabricated building roofs
  • Industrial facilities, warehouses, and factory roofs
  • Residential and commercial attic insulation

Advantages

  • High thermal insulation: Reduces energy loss thanks to low thermal conductivity
  • Fire safety: A1 non-combustible classification
  • Acoustic performance: Fibrous structure provides effective sound absorption
  • Flexible and lightweight: Easily fits between rafters and simplifies installation
  • Breathable structure: μ=1 allows vapor diffusion, reducing condensation risk
  • Long-lasting performance: Maintains its shape without sagging over time

Installation Information

Surface preparation:
The application area must be clean, dry, and smooth. Sharp edges should be removed.

Placement:
The blanket is cut to size and placed tightly between rafters or beams without leaving gaps.

Fixing:
It is supported with wire, battens, or profiles. It should not carry any load.

Covering:
The upper layer is completed with a vapor control membrane and roof covering material.

Installation Recommendations

  • Use protective equipment such as gloves, goggles, and masks
  • Do not expose the product directly to water
  • Maintain roof ventilation gaps
  • Ensure insulation continuity and avoid thermal bridges
  • Do not walk on or apply load to the product

Frequently Asked Questions

What thickness options are available for Type 400?
100 mm, 120 mm, and 140 mm.

Where is it recommended to use?
It is ideal for metal roofs, pitched roof spaces, sandwich panel undersides, and prefabricated roof systems.

Is it non-combustible?
Yes, it has an A1 non-combustible classification.

Is it vapor permeable?
Yes, with a μ value of 1 it allows vapor diffusion.

What is the difference from Type 350?
Type 400 offers higher density and higher thermal resistance (RD), making it suitable for projects requiring superior performance.