Megasorber LD5 is a high-performance liquid deadener for panel vibration damping and noise control.

The exceptional vibration damping properties are complemented by fast drying, ease of use, environmental friendliness and low flammability.

Megasorber LD5 is a thixotropic paste specially designed for trowel, pour, brush, roll-on and spray-on applications. Once dry, the cured film is UV resistant and water resistant.

Megasorber LD5 effectively reduces resonant vibration. Vibration energy is absorbed within the material and converted to heat. In addition to vibration damping, it also increases substrate transmission loss due to the reduction of panel coincidence and panel resonance effects.


Self-adhesive vibration damping paint

Key features

  • High damping efficiency
  • Water-based, non-toxic formulation
  • Fast drying
  • Non-sag formulation (thixotropic)
  • Excellent adhesion—the product will not delaminate from the substrates
  • Water and UV resistant once dry
  • Ignition retardant
  • Ease of application—can be trowelled on or sprayed on.

Key benefits

  • Reduces resonant vibration and structure-borne noise very effectively
  • Increases panel transmission loss, i.e., blocking the external noise
  • Suitable for applications with outdoor exposure
  • Easy to install—the product can be painted on, trowelled on or sprayed on
  • East to clean up—just with water.

LD5 used on metal roof panels to reduce raindrop impact noise

Examples of previously completed projects:

  • Trinidad Tobago Shaw Park Stadium.
  • The University of Queensland – colourbond cladding

LD5 used on portable container housing impact noise reduction

  • Container metal skin shell
  • 3mm Megasorber LD5
  • Spray-on application
  • Reduced structure-borne noise

Technical specifications

Megasorber LD5 is vibration damping paint, which can be sprayed on, trowelled on or rolled on.

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Product Codes

Standard thickness 25mm, 50mm, 100mm

Product Code Thickness Panel Size
Megasorber FM25 25mm 1.2m x 2.4m
Megasorber FM50 50mm 1.2m x 2.4m
Megasorber FM100 100mm 1.15m x 2.35m

Other thicknesses available: (minimum order quantity applies) 12mm, 38mm & 75mm


  1. Base foam is either white or light-grey;
  2. Standard facing colours are: white, grey and black; Aquatic, Dark Grey and Sandstone are made to We offer custom cutting to size; please note that cutting charges will apply. Prices will be quoted on the application.
  3. Product code with optional extra:
  4. G8 facing may have a stripy appearance and creases. Hairline creases may appear on the facing when The creases do not affect the acoustic performance.
  5. There are colour variations between batches; whilst we take every care to minimise batch-to-batch variation, in some instances, variation may be unavoidable and will occur.
  6. Dimensional change will occur in the FM foam substrate with a change in relative humidity and temperature, this may cause creasing on the Soundmesh® G8 facing. The creases do not affect acoustic performance.
  7. Thickness tolerance is ± 5%, and sheet dimension tolerance is ± 1%.
  8. The standard sheet size is 2m x 2.4m. Other sheet sizes available: 1200mm x 1200mm and 1200mm x 600mm (1195mm x 595mm if packed in boxes). We can cut panels to size; however, extra cutting charges apply.
  9. Water repellent facing is recommended for easy surface
  10. Recommended adhesive is Megasorber A200 or Megasorber


Thickness (mm)







Base Foam

W = White

G = Grey

Soundmesh® G8

RW = Water repellent white

B = Black

RB = Water repellent black

G = Grey

RG = Water repellent grey

DG = Dark Grey

RDG = Water repellent dark grey

RS = Water repellent sandstone

RQ = Water repellent aquatic

Optional extra

DS = G8 on both sides

Blank = G8 on one side only

Physical Properties

  1. Base foam colour: White or light grey;
  2. Density, weight and thermal insulation (R-value) properties
Product Code FM12 FM25 FM38 FM50 FM75 FM100
Nominal density (kg/m³) 25 16 13 12 11 10
Nominal weight (kg/m2) 0.30 0.40 0.50 0.60 0.80 1.0
R-value* 0.35 0.74 1.12 1.47 2.21 2.94

* Calculated value based on thermal conductivity @ 15


  1. AS 1 – 2015 Determination of fire hazard properties:

Product Group Number Classification                                                                                    Average Specific Extinction Area

Group 1                                                                                    98.3 m²/kg

  • 1-2015: Reaction to Fire Tests – Heat Release Smoke Production and Mass Loss Rates. Group 1 Classification.
  • 3.1989: Early Fire Hazard Properties: Simultaneous Determination of Ignitability, Flame Propagation, Heat Release:
Ignitability Spread of Flame Heat Evolved Smoke Developed
0 0 0 4
  • BS 476-6:1989+A1:2009 Fire tests on building materials and structures – Fire propagation of products:
Fire propagation index, I Sub-index, i1 Sub-index, i2 Sub-index, i3
7.4 5.3 2.1 0.1

AS ISO 354-2006 Measurement Results

Hz FM12 FM25 FM38 FM50 FM75 FM100
100 0.00 0.07 0.11 0.15 0.27 0.40
125 0.00 0.1 0.16 0.22 0.32 0.60
160 0.05 0.14 0.23 0.33 0.61 0.89
200 0.05 0.17 0.40 0.63 0.77 0.96
250 0.10 0.31 0.52 0.84 0.95 1.05
315 0.15 0.48 0.75 1.14 1.12 1.07
400 0.20 0.72 0.95 1.25 1.16 1.02
500 0.30 0.88 1.05 1.15 1.08 1.00
630 0.40 1.04 1.07 1.17 1.01 1.01
800 0.50 1.04 1.10 1.13 1.01 1.01
1000 0.65 1.03 1.09 1.08 0.96 0.96
1250 0.75 1.09 1.10 1.08 0.94 0.94
1600 0.90 1.05 1.04 1.02 0.96 0.96
2000 1.00 1.04 0.98 0.94 1.00 0.92
2500 1.05 0.99 0.91 0.9 0.96 0.96
3150 1.05 0.98 0.90 0.87 0.94 0.94
4000 1.00 0.9 0.89 0.9 0.95 0.95
5000 0.85 0.82 0.89 0.87 0.92 0.92
NRC 0.5 0.8 0.90 1.00 1.00 1.00
a 0.40(H) 0.60(MH) 0.90 1.00 1.00 1.00

Frequency                                             Random Incidence Absorption Coefficient

  • BS 476-7:1997 Fire tests on building materials and structures – Surface spread of flame of products Classification: Class
  • EN45545-2:2013+A1:2015 Railway Applications – Fire protection on railway vehicles Part 2: Requirements for fire behaviour of materials and components. Meets the requirements of R1 for HL1, HL2, HL3 Hazard Level Classification.

Volatile Organic Compounds (VOC)

ASTM D5116 “Standard Guide for Small-Scale Environmental Chamber Determinations of Organic Emissions from Indoor Material/ Products”: 0.016 mg/m2/hr (well below the GreenTag requirement limit of 0.5mg/m2/hr).

Download the technical specifications

Installation instructions

These recommendations are for general guidance only. Installation methods must be tested under actual service conditions to determine their suitability for a particular purpose.

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Keep acoustic panels flat. Panels must be kept flat during the handling and installation process. Bending or folding sheets may create creases on the Soundmesh® G8 facing. Once formed, these creases are difficult to remove.

Cutting (if required). The panel can be hand-cut by a knife (sharp utility knife or similar) or machine-cut by a bench saw or rotating blade cutter with a toothless blade.

Note: It is recommended to wear gloves during cutting. The Soundmesh® G8 facing edges may irritate or cut the skin.

Clean substrate surface with Megasorber AC5, acetone or similar. The surface must be dry, free of oil, dust, grease, rust and other contaminants.

Install the panels direct-fix using Megasorber A200 or A100 adhesives, with express finish edges or between panels using powder-coated aluminium trim.

Clean dirt and marks on the Soundmesh® G8 facing with Megasorber

M8 Clean block and water. Dry with a microfiber cloth. Remove excessive adhesive on hands, cloth or equipment with Megasorber AC5.

Direct-fix acoustic panels using Megasorber A200 adhesive.

Available in 600ml sausage for caulking gun and 290ml cartridges for cartridge gun.

  1. Apply adhesive on the back of the acoustic panel (NOT on the Soundmesh® G8 facing).
  2. Install the panel immediately after application of the

Application Pattern

Full-size panel (1.2m x 2.4m) adhesive application 

Minimum bead size (glue width) = 10mm to 15mm diameter. Recommended usage: approx. 1.5 to 2 sausages per full-size panel (1.2m x 2.4m), or approx. 2-3 cartridges per full-size panel.

Direct-fix with Megasorber A100

Spray Adhesive

  1. Connect a hose and spray gun to the new canister. Roll the canister backwards and forwards vigorously for 1-2 minutes to ensure the adhesive has not settled or separated during transit.
  2. Spray adhesive onto the back of the acoustic panel (not on the Soundmesh® G8 facing). Spray one coat to seal the porous surface vertically and then a second coat horizontally to achieve maximum adhesive contact.
  3. Spray adhesive on the substrate
  4. Allow adhesive to dry thoroughly. The adhesive should be touch-dry in 3-5 minutes (depending on conditions).
  5. Bond both surfaces together within 10 minutes of the adhesive being touch-dry.
  6. Apply uniform pressure over the surface.

Spray patterns-


Note: we recommend A100 on a smooth surface, such as refrigeration panels, plasterboards and metal panels. A100 is not suitable for uneven or textured surfaces. For uneven or textured surfaces, such as concrete soffit and brickwork, we recommend A200 adhesive.


Express Finish.

Leave a gap of 20mm to 30mm between panels

Powder-coated aluminium or metal trims

FM50 Acoustic Panel

Download the installation guide

Soundproofing case studies