Internal Walls
Partition WallsInternal walls that form rooms within the same dwellings are usually made up of lightweight partitions formed from metal or timber studs.
Lightweight partitions can achieve high levels of sound insulation when the correct balance of plasterboard, frame and Rockwool products are selected. Using Rockwool Flexi or Acoustic partition slab as the infill layer improves the performance of a lightweight partition substantially because it absorbs the reverberated sound within the partition void.
As a result, lighter and thinner plasterboards can be used which will reduce the load thickness of the structure. As an infill layer these Rockwool products are also used to cut down on the hollow sound which is characteristic of partitions where plasterboard alone is used.
To help specifiers meet and exceed stringent building regulations, Rockwool created the new XPR Premium Systems. XPR solutions feature high impact Fermacell gypsum fibreboards supplied by Xella, superior metal studs supplied by Protektor and the optimum acoustic and Firesafe Flexi stone wool insulation core supplied by Rockwool. The components combine to create space-saving partition systems with excellent acoustic insulation and fire protection properties simply helping specifiers meet and exceed stringent building regulations.
Regulations The 2003 edition of Approved Document for England and Wales introduced a new requirement for the sound insulation of internal walls within houses, flats and rooms for residential purposes. The requirement is for all internal walls between a bedroom or room containing a WC and another room to have a minimum sound insulation of 40dB Rw.
Internal partitions do not need to be site tested, laboratory tests are acceptable. ADE Section 5 internal wall type B gives examples of internal timber or metal joist floor constructions which should achieve this value.
ADE Construction guidance specifications for internal timber or metal stud partitions;
Timber stud partition . Min 75mm deep timber studs . Min 25mm mineral wool between studs (25mm Rockwool Acoustic Partition slab) . Single layer plasterboard with min mass per unit area 10kg/m2 (eg 15mm standard wallboard) ADE Section 5 internal wall type B gives examples of internal timber or metal joist floor constructions which should achieve this value.
ADE Construction guidance specifications for internal timber or metal stud partitions;
Metal stud partition . Min 45mm metal studs . Min 25mm mineral wool between studs (25mm Rockwool Acoustic Partition slab or 50mm Rockwool Flexi in min. 60mm metal studs) . Single layer plasterboard with min mass per unit area 10kg/m2 (eg 15mm standard wallboard)
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