HD1042 Hush Underscreed 6 System

The HD1042 is an acoustic flooring system for separating floors which is designed to provide sound insulation under screed floors in all kinds of refurbishment, conversion and new build projects.

It has been fully tested as a complete system to demonstrate compliance with all the Building Regulations covering the UK - Approved Document E (England & Wales), Part G (Northern Ireland) and Section 5 (Scotland).

The system also provides 1 hour fire resistance.

It is formed using Hush Acoustics' high quality acoustic materials including the Hush Under Screed 6 Membrane, RD flanking strip, Hush-Slab sound absorber and the Hush MF ceiling system. This is combined with GYPROC Soundbloc plasterboard to complete the system.

How the HD1042 Hush Underscreed 6 System is formed:

• Hush Under Screed 6 Acoustic Membrane is laid over the masonry structure, ensuring it is installed as per the installation guide.
• The screed is then laid over the Hush Under Screed Membrane (with no screed bridging the masonry construction).
• The perimeters of the screed are then isolated using the Hush RD Flanking Strip.
• The Hush MF Ceiling is installed to the underside of the masonry construction, ensuing a 150mm void is created from the underside of the masonry to the back of the plasterboard lining.
• Hush-Slab 100 Sound Absorber is installed within the Hush MF Ceiling System.
• The system is completed by fitting a double layer of 12.5mm Soundbloc Plasterboard to the underside of the Hush MF Ceiling System.

Acoustic Performance*

Impact (L’nT,w) - 48 dB

Airborne (DnT,w) - 51 dB

Airborne (DnT,w + Ctr) - 49 dB

* Results based on the full Hush System HD1042 being using and installed as listed above. All flanking paths must be treated correctly.

Features and benefits:

• For use in refurbishment, conversion and new build developments where a masonry structure is in place.
• Building Regulations Approved Document E (E&W), Technical Handbook Section 5 (Scotland) and Technical Handbook G (Northern Ireland) compliant.
• Achieves a one-hour fire resistance.

Components:

• 65 mm thick sand/ cement screed – supplied by others.
• Under Screed Acoustic Membrane.
• Hush RD – to isolate the perimeters of the screed.
• Concrete slab – supplied by others.
• Hush MF Ceiling System – installed to the underside of the structure.
• Hush Slab 100 – fitted tightly together within the ceiling void.
• Two layers of 12.5 mm thick Gyproc Soundbloc plasterboard – supplied by others.