What defines an ecological insulation is not only where it comes from and how much energy it costs to manufacture but also how it will be recycled. Recycling is indeed a key element in a citizen's approach to sustainable development. Different eco-insulation materials deserve special attention because they come directly from the recycling of paper, textiles or wool.
Insulate with recycled eco-materials
Cellulose based on recycled paper
The cellulose comes from recycled newspapers and papers. They are cleared, ground with boron salt to make the cellulose flame retardant and to protect against rodents and insects.
The issue of the safety of the boron salt was raised in 2012. And for a few months, the CSTB (Scientific and Technical Building Center) withdrew its technical approval to finally reconsider its decision. In high doses, the boron salt is actually toxic. As such, cellulose wadding insulation containing more than 5.5% boron salt must be mentioned on the packaging. potential risk. Some manufacturers have returned to the ammonium phosphate previously used or have developed formulas based on of plant extracts.
Thanks to its densityCellulose wadding is an excellent insulator to keep the heat in the winter but especially to protect it during the summer. It is also a good sound insulator.
It is used for thermal insulation of walls, floors and roofs. In bulk, it is used to insulate lost roofs and box walls of timber frame houses. The ideal is to set up the cellulose wadding with a carding machine blower that will decompact the wadding or a blowing machine to inject it into the walls in boxes. If it is not irritating, you must wear a mask to protect yourself from dust. She does not cup with time.
In the form of panels, it is a high performance acoustic insulation between partitions, floors and ceilings.
It is the least expensive ecological insulation on the market.
Recycled textiles, excellent insulation
Insulators based recycled textiles either from the valuation of unsaleable garments recovered by Relais Emmaus, or from the recycling of cotton fabrics from the industry. Emmaus relays have 85% of their clothing sold and the rest was cremated. Hence the idea of transforming used cotton clothing into eco-insulating materials.
According to the manufacturers, the insulation is either pure cotton (used clothing and / or cotton fabric industry), or mixed with other fibers (recycled wool or acrylic fibers).
The fabrics are defibrated, treated with ammonium phosphate to be flame retarded and resist mold and fungus. They are in the form of flakes or bonded with polyester in the form of rolls or panels.
It is air trapped in cotton fibers that gives them their insulating power. The insulation thus manufactured protects from the cold but also preserves heat and regulates the hygrometry. In acoustic insulation, they are very efficient.
The lightness and flexibility panels and rollers, make it an easy and quick to install insulation. They are simply cut with a knife or an insulating saw.
Panels and rollers are used to insulate roofs, walls and soundproofing, intermediate floors.
Did you know?
A good insulation must to protect from the cold in winter but also to preserve heat in summer. We are talking about thermal phase shift. It is the ability for a material to slow down the heat penetration in the home. It is expressed in hours. It depends on the thermal inertia of the material, that is to say how long it takes to reach the temperature of its environment.