Acoustic Insulation System for Walls: HD1040 Hush Wall System

The HD1040 Hush Wall System is a highly versatile solution for providing acoustic treatment for timber stud, metal stud, brick and block walls, delivering high standards of airborne sound reduction. Tested as a complete system and fully compliant with all UK Building Regulations - Approved Document E (England & Wales), Part G (Northern Ireland) and Section 5 (Scotland) - HD1040 is ideal for transforming sound insulation levels in different separating wall constructions.

Its innovative design and application will reduce both flanking and direct sound transmission with only a minimal loss of space in the room. This is achieved by using a composite three layered board (1800mm x 900mm x 27mm) and a resilient bar system.

The HD1040 Hush Wall System utilises a number of Hush Acoustics' advanced sound insulation materials to combine in a powerful solution. It is created as follows:

• Hush Wall Boards are fitted with all gaps filled using acoustic mastic and sealed at all perimeters with Hush Isolation Tape, fixed horizontally to Hush-Bar Resilient Bars with 32mm dry wall screws.
• Hush Slab 25, or thickness to suit, is fitted into cavity between studs or tightly between Hush Bars when applying to brick or block
• Hush Bar Resilient Bars are then fixed horizontally at 450mm centres to stud or wall, to allow for scrim joints and all perimeters to be sealed prior to skimming.

Acoustic Performance*

Impact (L’nT,w) - 58 dB

Airborne (DnT,w) - 48 dB

Airborne (DnT,w + Ctr) - 58 dB

* Results based on 100mm timber stud wall.