Partitions are inner walls that divide bigger spaces into smaller rooms. They stop sound and the spread of fire spread between different spaces.
Lightweight partitions are usually the most cost efficient way to build up an inner wall. The mass of the wall produces good sound insulation, so create it with air-tight plaster board surface layers combined with a soft and porous absorbant core of stone wool.
Paroc has been granted European technical approval (ETA) for partitions. To get ETA, test every related building part needs testing. For this reason, it was necessary to limit the amount of solutions tested. The approval is based on the fire tests made by ITB in Warsaw, Poland and on the sound tests by VTT in Espoo, Finland. The certificate is based on the common European regulations described in ETAG 003.
To cover the sound insulation properties of additional building parts, we have a statement by VTT Technical Research Centre of Finland. The figures for each building part are based on calculations that take into account the ability to produce partitions on site. There are safety margins added to the values, but it is possible to use the figures for designing.
In designing renovations, follow the same principles as for new buildings. The usage of space will change. New rooms might require better sound and fire classification than partitions have had in the past. Regardless of the old partition structure, fire and sound classification can be upgraded to a certain extent with non-combustible and sound absorbing stone wool insulation and plaster boards.