Bulk insulation

Bulk insulation materials are dry, loose and small-grained building materials that are poured into cavities such as ceilings, roofs, floors and walls for thermal and / or sound insulation . Especially when used in old buildings, they also serve to compensate for the height of uneven substructures for floors. Some loose-fill insulation materials can also be used as blow-in insulation materials .

Properties and areas of application

Dry fillings used for heat and sound insulation of building parts are mainly used in wooden beam ceilings, under screed slabs and for filling hard-to-reach cavities. They are poured or compacted loosely; in the case of attics that are not accessible, they are also used as exposed insulating material between the joists and beams. Leveling fill can level and insulate uneven raw floors and old plank floors. Pressure-resistant fillings serve as a base for dry screeds.

Types of insulation

For thermal insulation, natural insulation materials are just as suitable as mineral products. Among the combustible natural insulation materials made from renewable raw materials , expanded or unexpanded cork pellets, flakes made from meadow grass cellulose or from waste paper, hemp fillings , Miscanthus insulation fillings and rye granulate are used. The mineral non-flammable bulk insulation materials available include expanded perlite , expanded clay , pumice (natural pumice), mineral fiber granulate or rock wool flakes . However, due to their higher thermal conductivity, expanded perlite, clay and pumice require three to four times the insulation thickness compared to more efficient insulation materials, such as B. mineral fiber granulate or rock wool flakes.

literature

The information in this article is essentially taken from the following literature:

• Gottfried Haefele, Wolfgang Oed, Ludwig Sabel, 2008: House renovation. Ökobuch-Verlag, Staufen, 10th edition, pp. 60-61 ISBN 978-3-936896-37-4