Sound Floor® STI

Sound Floor® STI


Sound Floor STI is an acoustic overlay flooring board used to help attenuate both airborne sound and any impact noise passing through the floors.

The STI boards are created through an upper face manufactured from V313 moisture-resistant chipboard, with an underside of high density mineral fibre slab.

Sound Floor STI boards are measured at 48mm thick, and are ideal for helping to build up the existing floor levels. They offer the ability to damp the vibration in addition to minimising the noises mentioned above.

Versatility is a key characteristic of the STI: the moisture-resistant upper surface means that the boards can be used all over the house in almost any space, including kitchens and bathrooms. It's often used to upgrade separating floors when existing buildings are being converted into apartments, as well as in all manner of new projects, especially where the developer is looking to either meet or exceed the Building Regulation Requirements.

Flanking Transmission

The design and construction of a building can have an impact on the performance of the SoundFloor STI boards. It's extremely important that the junctions between the separate wall and floor are correctly detailed. If they aren't, then the boards may be prevented from reaching their full performance levels.

Packaging and Handling

All SoundFloor boards should be stored inside, in a dry, well-ventilated space. They should be kept off the ground and always laid flat. It's important that the utmost care is taken when handling the units to avoid damaging them.

Operating Temperature

  • SoundFloor STI is suitable for use at normal building temperatures


  • Thickness: 48mm
  • Size (per board): 2400mm x 600mm
  • Weight: 24kg

For more information about this product, please see the Sound Floor® STI data sheet

Please click here to read our Product Disclaimer

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