Insulation for Internal Metal Stud Wall

The primary purpose of an internal metal stud wall is to provide acoustic separation for airborne sound between two adjacent rooms within a dwelling, thereby improving the acoustic comfort of those within the dwelling.

The minimum permitted acoustic specifications are defined by Approved Document E (England & Wales) and Section 5 (Scotland), although it is often recommended to improve on this where possible.

These walls are typically constructed using metal studs placed at nominal 600mm centres finished with a sheet of plasterboard to each side.

The insulation of choice for internal metal stud walls is typically a glass mineral wool (GMW) roll or slab. Isover Acoustic Roll (APR 1200) can be installed as part of the internal metal stud wall construction between the studs to provide the level of sound reduction required according to Approved Document E (England & Wales) and Section 5 (Scotland).

Key Considerations

When using Isover products, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions. In addition to the product datasheet, please refer to the following product documents:

• BBA certificates - where applicable to the application
• Declarations of Performance
• Health & safety datasheets

The building detail is for illustrative purposes only. It does not constitute advice and should not be relied upon.

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Insulation products

Product Name	Thickness Range	Sizes	Lambda
Isover Acoustic Partition Roll (APR 1200)	25-100mm	Width 2 x 0.6m, Length 9.17 - 20m	See datasheet
Isover Acoustic Slab	50-100mm	Width 600mm, Length 1200mm	See datasheet
Isover Modular Roll	60-100mm	Width 1.2m, Length 9.17 - 15.5m	0.043