Specifications

Presentation: Bulk (Bag of 12 to 15 kg)

Density poses Recommended
In upper covering: Density of 30 - 35 kg/m3 in blowing
Crawling under-roof insufflation: Density 45 kg/m3
Walls: Density of 35 kg/m3 in wet spraying and 65 kg/m3 in insufflations

Thermal conductivity (λ) = between 0038 and 0041 W / mK

Thermal conductivity is the property of materials transmits heat by conduction. Symbolized by the coefficient λ (lambda), is expressed in watts per meter Kelvin (W / mK). The higher the thermal conductivity of a material, the greater this material will be driver. More thermal conductivity is low, the greater the insulation. The coefficient of thermal conductivity (lambda) class and cellulose wadding among the best insulators.

Fire classification: M1 (France) or B (Europe).

It corresponds to the definition of non-flammable. Cellulose wadding does not contribute to the development of fire with the addition of boron salt. It does not spread flames and does not ignite. When the boron salt comes into contact with a living source of heat it gives off water molecules, instantly incinerating the exposed surface. This prevents the spread of fire.
Permeability to water vapor (μ) = 1 to 2.

Resistance to diffusion of water vapor indicates the ability of a material to allow it to spread the water vapor. It is expressed by the coefficient μ (mu). If μ is close to 1 or 2 the material allows migration of water vapor through the material. This value is interesting to compose a wall the more breathable as possible.

Hydrophilic, capillary and hygroscopic cellulose contains 10 to 15% humidity.

Moisture capacity is the ability of a material to absorb the excess water vapor when the air is too humid and to return it when dry.

Heat capacity (ρC) = 2

It is the ability of a material to store heat over its volume. Unit: kJ / kg / K. It is defined by the amount of heat required to raise 1 ° C temperature of 1 kg of material.

Dephasing time = 8 to 12 hours

The key to a good phase shift depends on its thermal diffusivity (a) that is to say its ability to quickly transmit a temperature change. It is the ratio of the thermal conductivity thermal capacity (a = λ / ρC). More diffusivity, the lower front heat will take time to traverse the material thickness.

Cotton wool is antifungal and rot with the addition of boron salt.
Known since antiquity, the boron salt is a natural product extracted from quarries. It is a repellent against eating insects (termites, beetles ...). It prevents the formation of fungus and makes the cotton to rot.
Health and Ecology
Insulation safe, do not present a health risk. Energy grey low of about 6 kWh/m3.
Soundproofing

The absorption properties of noise cellulose wadding provide an effective solution to noise pollution. Cellulose wadding and is used for soundproofing interior walls and ceiling light. The airborne sound waves are constrained by the elastic texture and fibrous insulation and transformed into friction.