Insulation for Internal Timber Stud Wall
For illustrative purposes only
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Start your U-value calculation >The primary purpose of an internal timber 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 timber studs placed at nominal 600mm centres finished with a sheet of plasterboard to each side. The insulation of choice for internal timber 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 timber 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.
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 |