Cork
stores ten times more heat than, for example, mineral fibre insulation materials. The thermal conductivity is 0.041-0.050 W/mK. Cork insulation boards are relatively insensitive to moisture and lose little of their insulating effect when exposed to moisture. Cork retains its shape, retains its elasticity and, due to its mass, can also be rated as good in terms of sound. It is insensitive to insects and fungi and resistant to rodents.
Delivery forms
Available are sheets, rolls (expanded cork) or granules (expanded and non-expanded cork).
Cork boards are available as part of a thermal insulation composite system (cork façade). The adhesive is applied to the cork board in the edge bead-dot method. The panels, which are up to 40 cm thick, are glued to the masonry in an offset manner and, if necessary, doweled. There are also cork insulation boards for impact sound insulation under screed constructions. Inter-rafter insulation with cork boards is less recommended. To avoid joints, the edges would have to be stuffed with another elastic insulating material. Cork shot is given loose as a levelling fill or heat-insulating filling fill, e.g. between upholstery timber in floor constructions. The material can be used for thermal insulation as a filling material in floors, on concrete ceilings and in gaps at any desired height. When used in the open, approx. 2% natural lime must be added to natural cork meal in order to obtain complete protection against rodents. Expanded cork meal is a by-product of expanded baking cork, slightly lighter than natural cork meal and contains more dust content, which eliminates the need for liming. Roller cork can be used well as ecological impact sound insulation.
... read more on umweltberatung.at - The Environmental Consultancy
Source: The Environmental Consultancy
red= Areas of application, grey= not possible
