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ISO TONE sound-absorbing boards

ISO NOISE

ISO TONE polyester sound-absorbing board

Polyester-fibre board for reducing echo and reflections inside rooms — fabric-wrapped, fixed to walls or placed behind perforated panels.

Thickness
25–50 mm
Noise reduction coefficient (NRC)
0.69 / 0.86 25 / 50 mm (test mounting not stated) · ASTM C423

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See all models and sizesManufacturer documentsTechnical specifications

Product details

Sound absorptionPolyester-fibre insulationISO NOISE

100% polyester fibre · reduces echo in rooms

Thickness
25–50 mm
Noise reduction coefficient (NRC)
0.69 / 0.86 25 / 50 mm (test mounting not stated) · ASTM C423

What is it?

ISO TONE is a 100% polyester-fibre sound-absorbing board, 0.60 × 1.20 m, 25 or 50 mm thick. It reduces echo in meeting rooms, music rooms, recording rooms and machine rooms. It is glued to walls, placed behind perforated wall or ceiling panels, or wrapped in decorative fabric. It treats sound inside the room; it does not block sound through walls.

What is it made of?

Polyester-fibre insulation · Facing: Unfaced, or wrapped in glass cloth · Board

What can it help with?

Echoey room

Which sizes are available?

Thickness 25–50 mm — Choose a size

Limitations to know

Reduces echo inside the room; it does not stop sound passing through walls. NRC depends on thickness and on the mounting used in the test.

Where does the data come from?

ISO TONE data sheet

Technical data from the manufacturer's documents ISO NOISE · Checked 27 Sept 2026

Technical specifications

All values come from the manufacturer's documents, with conditions and test standards. Values the documents do not state are not shown.

PropertyValueConditions / standardSource
Material100% polyester fibre—ISO TONE data sheet, p. 2
Noise reduction coefficient (NRC)0.69 / 0.8625 / 50 mm (test mounting not stated) · ASTM C423ISO TONE data sheet, p. 2
Sound absorption by frequency25 mm: 0.04 / 0.28 / 0.68 / 0.89 / 0.90 / 0.82 · 50 mm: 0.15 / 0.75 / 0.89 / 0.93 / 0.86 / 0.89125 / 250 / 500 / 1000 / 2000 / 4000 Hz · ASTM C423ISO TONE data sheet, p. 2

Models and sizes available

ModelThickness (mm)Width (mm)Length (mm)
25 mm256001200
50 mm506001200

Pack quantities and prices — ask us on LINE

Applications

WallsStop sound through walls, reduce echo, keep heat outCeilingsHeat insulation above the ceiling and less sound through itFactoriesFactory roofs, machine noise and hot pipework

Highlights

  • 100% polyester fibre
  • 25 and 50 mm thick
  • Glue to walls, fabric-wrap or place behind perforated panels

Installation overview

  1. Apply adhesive to the back and fix to the wall
  2. Or place behind perforated wall or ceiling panels
  3. Can be wrapped in decorative fabric

Always follow the manufacturer's installation and safety instructions.

Manufacturer documents

ISO TONE data sheetPDF · ISO NOISE (distributed by Top Insulation and Trading) · TH

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