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How to Choose Insulation Materials

Users are often baffled by the diversity of the range of insulating materials and even more so when it comes to understanding the information about them.

Before choosing an insulation product, it is important to ensure its thermal performance, expressed by its thermal resistance R and the lambda thermal conductivity factor. The application on which the insulation is to be used (roof, floor, walls, patio, etc.) will also condition its fire resistance, water behavior or mechanical stability. Other criteria, such as the environmental impact can also come into play.

Material

Characteristics and properties

Main applications

Glass wool

Lambda (λ )
(thermal conductivity)
Acoustic
Flexible and light
Not very expensive

Roofs (including blowing)
Walls (excluding external thermal
insulation under rendering)
Cladding
Ceilings and partitions

Stone wool

Mechanical
Fire resistant
Acoustic

Sandwich panel
Steel frame roof
Floor (acoustic)

Alternative insulation

Status value, image
Use of biomass
or sub-products

Roofs
Walls

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