Properties
Calcium silicate is very permeable to diffusion (μ = 3-6) and is installed without a vapour barrier. It has an acceptable insulating effect (λ = 0.045–0.068 W/mK). The calcium silicate boards ensure a pleasant indoor climate through active regulation of humidity and at the same time warmer walls. They do not rot, are resistant to aging, rot, shape retention and resistant to insects and rodents. The panels are offered in thicknesses of 15 to 65 mm (in some cases up to 200 mm) and some manufacturers also offer them in the form of insulating wedges. 15 mm panels are mainly used for window reveals, thicker panels for wall planking. The installation is carried out with special glue, lightweight mortar or dowels. Larger cavities, e.g. in the case of very uneven walls, are filled with calcium silicate granules beforehand. In the case of wooden constructions, the panels can be screwed to wooden stands with wood screws or clamps. Calcium silicate boards are non-flammable (flammability class A1 according to ÖNorm EN 13501-1), and no toxic gases are produced in the event of a fire.
Image: The Environmental Consultancy
Delivery Forms
Calcium silicate is supplied in the form of plates or insulating wedges.
Calcium
silicate panels are used to insulate walls and ceilings in interior fittings. These are applied to the substrate with a special adhesive. These panels are particularly popular for listed or strongly structured facades that do not allow for sensible external insulation, or for the thermal renovation of individual apartments in multi-storey buildings. Calcium silicate boards not only insulate, but can also absorb and release water well due to the pores. For this reason, they are also used for the renovation of damp masonry, for mould control, as interior insulation in the basement or for salt restoration. They are slightly alkaline (pH value is about 10) and they do not provide a breeding ground for mould.
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rot= Areas of application, grey= not possible
