Acoustic insulation for timber floors: HD1049 Hush Mat 15 RB System

The HD1049 Hush Mat 15 RB System from Hush Acoustics provides an ideal way to provide sound insulation in separating floors of conversion projects that feature timber joists.

It has the dual benefit of being a thin floor and ceiling construction system that complies to all UK Building Regulations to address impact and airborne sound transmission.

The system can be laid on timber floors and is principally utilising the high performing Hush Slab 100, a sound absorber, and Hush Mat 15, a rubber impact sound reducing material. It is a system that offers high sound reduction potential when installed correctly.

The HD1049 system is created using the following materials and steps:

• Hush Mat 15 is be bonded to the timber structure using the Hush Contact Adhesive.
• Suitable floor finishes can then be installed over the Hush Mat 15 with the correct installation guidance. The timber deck over the joists can be the original floorboards or a 18mm/22mm T&G chipboard/plywood deck.
• Hush Slab 100 is fitted tightly between the joists with no air gaps.
• Hush Bar Deep Resilient Bars are fixed horizontally to the underside of joists at 600mm centres.
• Two layers of 15mm Soundbloc plasterboard are then installed to the underside of the Hush Bar Deep Resilient Bars.
• All perimeters are sealed with Hush Acoustic Sealant prior to skimming.

For help and assistance installing the Hush Mat 15 system, please contact the technical team.

Acoustic Performance*

Impact (L’nT,w) - 47 dB

Airborne (DnT,w) - 61 dB

Airborne (DnT,w + Ctr) - 49 dB

* Results based on all Hush Components being used and installed correctly as per the HD1049 details above. All flanking transmission paths to be correctly isolated.