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Insulating materials (wood fiber)

panels of wood fiber is produced through processing of waste and waste wood of coniferous and broadleaf not chemically treated, from sawmills to European countries.

The raw material is renewable and available in virtually unlimited size. The panels have good properties thermal insulation and acoustic structure with open pores, permeable to water, provides excellent breathability, in case of fire will produce specific toxic gases, but the normal gas combustion of wood does not contain substances harmful to health.

The wood fiber is a hygroscopic material, the absorbed moisture gets inside the fiber itself and the space between the fibers, responsible for the porosity of the material, remains full of air, this means that its insulating power not decrease, in contrast to the fibrous materials of mineral origin (fiber glass or rock), where the fibers are not able to absorb the moisture in them. Panels are used for heat and sound insulation in inner and outer coats ventilated cavities of wood structures, wood roofs, floors and subfloors to dry floors of all types.

The panels are cut with sharp knife or circular saw, must be stored in a dry place and supported horizontally.

fibers are obtained by processing waste (cut, ground and damaged through appropriate mechanical treatments) and then mixed with hot water (4-5%) and aluminum sulfate (0.4 to 0.8%) that Besides being repellent and pesticide, the active binding properties of the natural resin of the wood (lignin), without adding additional ligands. The mixture is then spread in appropriate forms, by compressing according to the desired density and dried in special ovens. The energy consumption for the production of the panels is fairly low.

To achieve the multi-layer panels used 1% of a non-toxic glue based on polyvinyl acetate. To achieve water-resistant waterproof panels is added 10% of a waterproofing substance: bitumen (petrochemicals), latex, wax, rosin and other natural resins.

panels free of binders and bitumen are not biodegradable, they can be incinerated and possibly re-used (can be composted), play an ecological insulating function, and achieve a comfortable room climate. Their porous structure of fiber promotes vapor diffusion and absorption of sound waves.

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Insulating materials (cellulose fiber)

The cellulose fiber (paper) is a valuable raw material, and fits well as a thermal insulator to the structure of its pores can lock up large amounts of 'air, reducing heat loss. Originally

wood has a structure with parallel fibers, which is amended during the processing of paper, the fibers are oriented in all directions, creating a greater porosity and achieve a good insulating properties.

The cellulose fiber is breathable and hygroscopic, absorbing moisture from the environment and then transfer it successivamenteha good behavior and sound-absorbing, non-toxic and does not cause reactions in contact with skin.

It 's a very suitable material from the ecological point of view, since the raw material is recycled newsprint and energy expenditure to produce is reduced.

The newspapers are sorted, shredded and mixed with 15% of salts of boron, treatment pesticide and fireproofing, as a result of mixing are obtained flakes, which are trapped within the tiny air cells, responsible for resistance to the passage of heat. These can be prepared in the form of granules (diameter 4 mm) with no added pressure forming binders. Panels are also adding to the cellulose fiber 5-10% synthetic polyester fiber that acts as a support and makes the panel flexible, compact and easy to work.

To obtain an efficient sound absorption are only one or two centimeters.

fiber cellulose flakes is applied by trained personnel using the system directly Blow on site, with no additives and isolation by creating a continuous, seamless and without waste.

Find application in cavity walls of brick and wood structure with a thickness of not less than 10 cm or with poor insulation or deteriorated in cavities of ceilings and roofs with wooden frame, interior walls, ceilings, attics not feasible.

The cellulose fiber in grains is used for thermal and acoustic insulation of floors.

The jet dry slope compensation allows you to incorporate and drainage systems;

The cellulose fiber panels can be applied in cavities of timber structures, internal coats, outer coats ventilated, ventilated roofs, interior walls, ceilings, floors and subfloors.

The cellulose fiber is being considered to be a biocompatible non-toxic and is considered environmentally friendly because it comes from natural materials. The cellulose fiber in flakes and granules is reusable and recyclable and the recycling of the panels is problematic because it must take into account the presence of synthetic fiber polyester. Treatment with boron salts does not make the cellulose fiber suitable for composting as there are leaching into the ground.

Cellulose does not give reactions to skin contact, no concentration of toxic substances, absorption capacity, humidity control, odorless, electrically non-electrostatic and reagent-free fibrous dust toxic.

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Demi-glace Alternative

The construction of houses with solid wood walls, as the "blockbau" or "Fachwerk" takes over a building tradition spread to Europe, especially in Alpine and Nordic countries.

These types, for both narrow grounds maintenance works and for new construction needs, have undergone significant technical improvements, especially in relation to the problem of withdrawal wood work and its undesirable consequences (cracks in the plaster, cracks, etc.)..

The system essentially provides the use of solid wood or laminated logs of various species and sizes, square or rounded, with double or triple production in male and female, which are vertically stacked together to form the partition or carrier.

Such systems have been adopted by the industrial production of prefabricated houses, available in various standardized sizes.

Wood as a natural material, compact and homogeneous, can provide high performance thermal and acoustic insulation, in addition to knowing how to adjust the indoor humidity bringing the comfort of the rooms at high levels.

Wood is an environmentally friendly material not only because it is a renewable raw material, but also because it produces waste processing biodegradable or reusable, but also because its use from forest to factory to the site requires the use of large energy far lower than all other materials used in construction, hence resulting less pollution.

The walls of these houses are made from tree trunks (usually spruce), or left slightly squared round which, properly clamped in the three spatial directions, make the structure statically efficient, especially in comparison horizontal actions such as those carried by wind and earthquake.

These elements, properly channeled, are mounted on each other and the corners, together with joints. The wall thickness varies from 6 to 20 cm. Those with a thickness of less than 14/16 cm are too light to meet the acoustic requirements for a normal house and require an additional coating.

The structural elements in wood or riutilizzabli are completely recyclable into new structures.

solid wood walls with external insulation inside a wall coating of solid wood normally consists of a layer of insulating material and a wooden table. Also agrees the inclusion of a barrier to the wind (kraft paper). The insulation material panels are more suitable for soft wood fiber, coconut fiber mats and panels in wood chips mineralized.

The main drawback of these walls, with or without isolation, is the withdrawal of solid wood. The withdrawal on axis perpendicular to the fiber is much higher than in the trunk axis, in fact, the withdrawal of a horizontal height of 20cm is 2-3 mm, the withdrawal of the pillars is much lower, ie 2 -3mm over a length of 3 m.

of this withdrawal must be considered in the construction of doors, windows, stairs, chimneys and installations. Above the windows and doors must remain a suitable space, filled with coconut fiber or another fibrous material, to allow settling, otherwise the walls are no longer in the tube.

before purchasing a prefabricated house of wood you should check with the manufacturer on any pest control treatment suffered. It is, however, preferred to buy houses with untreated and treated their innocuous products. The air quality problems are attributable, in fact, the need for protection against the aggression of the material and biological protection against fire, so again the question moves mainly towards the nature of the products used in their treatments.

Compared to the laying great care should be paid to construction details of the bathrooms and other wet areas where the blocks will be posted opportunamnte isolated from the soil through a slab opportunamnete sized.

You should avoid mounting adhesives and sealing of the gaps with foam, resins, adhesives and silicones. In the case of coating the interior walls with insulation or protection against moisture (vapor barrier) should be paid attention to the possible effect of "encapsulation" of the confined space. This effect means that the pollutants may be present in indoor air can not breathe out through the walls, while the effect of absorption and purification can be carried out exclusively by the internal surface finishing layer (beads, panels) .

For fire protection the lining chalk it ensures much higher than the treatments with fire retardant chemicals, even if it keeps the wood beams. It is good to minimize maintenance, with polyurethane or epoxy indoors because they produce strong and prolonged emissions.

also be avoided in the treatment of recurrent confined spaces to impregnation with preservatives and dyes: they do not form a protective film surface and can release pollutants into the environment continuously.

The technique of dry assembly can speed up construction and minimize the risk of impact on indoor air quality.

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