Hush Panel 23 Acoustic Floor Board 2400 x 600 x 23mm

Keep footstep noise under control without a deep floor build-up. Hush Panel 23 Acoustic Floor Board is an economical floating overlay for new build concrete floors, combining 18mm high-density P5 moisture-resistant tongue-and-groove chipboard with a bonded 5mm Hushfelt resilient layer.

Each 2400 x 600 x 23mm board covers 1.44m² and weighs 20.88kg. Hush lists a finished floor height of 21mm over concrete, before adding your chosen floor finish.

	Typical impact rating over concrete: 45 dB L’nT,w
	Typical airborne rating over concrete: 62 dB DnT,w / 55 dB DnT,w + Ctr
	Thickness: 23mm
	Board size: 2400 x 600mm
	Area: 1.44m² per board

A thin overlay for quieter concrete floors

The resilient felt cushions impacts such as footsteps, while the concrete structure provides mass for airborne sound insulation against voices and TV noise. The tongue-and-groove edges join into a continuous floating deck, bringing the board and acoustic layer together in one installation.

Acoustic performance

Typical results for Hush Panel 23 in a concrete-floor assembly are 45 dB L’nT,w for impact sound, 62 dB DnT,w for airborne sound and 55 dB DnT,w + Ctr.

Lower impact levels and higher airborne values indicate better insulation when comparing equivalent tests. These figures describe the floor assembly tested by Hush.

Hush Panel 23 supports specifications for Building Regulations Part E in England & Wales, Section 5 in Scotland and Part G in Northern Ireland. It also meets Robust Details criteria when installed to the applicable detail.

Installation essentials

1. Prepare a flat, clean, dry concrete base, then lay the boards felt side down with staggered joints.
2. Glue all tongue-and-groove joints with Hush Bond panel adhesive. Keep the floor floating rather than fixing through it into the base.
3. Leave a 10–15mm gap around walls and fixed objects, then press Hush Seal 20 perimeter seal into the gap. Keep skirtings isolated from the panels.

For Robust Details projects, use Hush RD Flanking Strip at the perimeter instead of Hush Seal 20, as specified in Hush’s installation guide.

Choosing your floor finish

Hush Panel 23 can be used beneath carpet, timber and other floor finishes with the appropriate preparation. For vinyl or LVT, Hush recommends a prepared 6mm or 9mm plywood overlay. Tiled finishes require a compatible anti-fracture membrane and flexible adhesive.

How many do I need?

Divide your floor area in m² by 1.44 and round up to whole boards. Add an allowance for cuts if needed.

For example, a 20m² room with an optional 10% cutting allowance needs 20 × 1.10 ÷ 1.44 = 15.28, rounded up to 16 boards.

For help with the right quantity for your project, call our technical team on 01928 571 856 or email hello@soundinsulationstore.co.uk