Soundsure 400

Soundsure 400 is an acoustic resilient layer that has been designed predominantly for laminates, wood flooring and carpet tiles, delivering superior impact sound performance.

Why Soundsure 400?

As it is manufactured from recycled rubber crumb, Soundsure is not only extremely environmentally friendly, but also provides long-lasting durability and high levels of acoustic performance.

Product Leaflet Download

Soundsure 400 Components

Features & Benefits

  • Exceeds the performance standards required in the UK Building Regulations for sound insulation.
  • Suitable for use with underfloor heating systems.
  • Manufactured using recycled materials and fully recyclable.
  • Recycled rubber crumb ensures long-lasting acoustic performance.
  • Cushioned underlay to provide underfoot comfort.
  • Rubber crumb provides superb stability, performance and durability.
  • Will not deteriorate or collapse over time.
  • Reduces subfloor preparation times as screed or smoothing compounds are not required.
  • Green Label Plus accredited for indoor air quality and low VOC emissions.

Achieves Approved Document E performance standards for Floor Type 1.

Green Label Plus accredited for indoor air quality and low VOC emissions.

Acoustic Performance*

(no floor coverings and no ceiling below)

Measured improvement of impact sound (ΔLw) BS EN ISO 10140-3:2010
24 dB
Impact Insulation Class ASTM E989-21
IIC 57 / ΔIIC 27

Acoustic Performance*

(with floor covering and no ceiling below)

Laminate (8mm) 19 52 23
Engineered Wood (14mm) 19 53 23
Carpet Tile (Bitumen Backed) 38 68 36

* Tested on a 140mm / 5½” thick concrete floor.

Acoustic Performance†

(with floor covering and suspended ceiling)

Engineered Wood (3/8") 79 67 60

†Tested with a floor-ceiling assembly - 152mm / 6” thick concrete slab

Soundsure 400 Applications

Soundsure 400 is widely used in developments where high levels of acoustic performance are required. Ideal for use with laminates, wood flooring and carpet tiles.

Apartments and Hotels
Multi-Family Housing
Private Homes
Commercial Developments

Soundsure 400 Usage

Soundsure 400 can be used below the following types of floor coverings:

  • Laminate
  • Engineered Wood
  • Bamboo
  • Parquet Flooring

Product & Technical Information

Full technical specifications can be downloaded below.

Technical Specification Download
Installation Instructions Download
Product Construction
Rubber Crumb
Bonding Agent
Synthetic Latex
Product Thickness
1.60kg/m2 / 0.33 lb/ft2
400kg/m3 / 25.0 lb/ft3
Roll Size
1.37m x 11.00m / 54" x 36.09’
15.07 m2 / 162.2 ft2
Roll Weight
24.9 kg / 54.9 lb
Thermal Resistance (R)
0.95 Togs
Temperature Resistance
-40°C to +110°C

Installation Points to Note

The area of installation must be dry, smooth, dirt and dust free and weather tight.
The subfloor must be sound and sufficiently level, with no imperfections protruding through Soundsure 400. If not, then a self-levelling screed may be required.
When bonding to bare concrete, a suitable concrete sealer is recommended to ensure maximum adhesive coverage and bond strength.
If moisture levels exceed 75% RH, seal the area with a suitable primer.
Where possible, skirting board should be installed above Soundsure 400 in order to reduce flanking sound transmission.

Enquire about Sonixx®

For further information fill out our enquiry form or email

*required fields