Soundown Vibration Damping Tiles



DC 3 Damping Compound    Product Information

Visceolastic Glue DG-A 2

General Information for Damping of Structure Borne Noise

Soundown Vibration Damping Tiles

Soundown Vibration Damping Tiles are an easily applied damping layer for stopping reverberant "ringing" vibration in heavy plate constructions. Substrates upon which the tile is commonly installed include; steel, aluminum and fiberglass laminate.

The standard material comes in a 3/8" thick 12"x 12" tile which is bonded to the treated structure using epoxy or other high strength adhesive.

Vibration damping loss factor (_) at 1,000 Hz exceeds 0.10 on steel plate up to 0.20" thick, and on aluminum plate and fiberglass composite up to .40". Even greater damping values are obtained when the material is installed as a "constrained" layer treatment, by sandwiching the tiles between the structure and a constraining top plate.

The tile is a Polymeric product, resistant to fuel and water. The product is optimized for use in the temperature range 55m to 80m F. It weighs 2.8 lb/sf.

The tiles meet the requirements of MIL-P-26353C (ships) TYPE II Class 2.

Typical applications include:

- bottom plate over propellers

- engine foundations

- tank-tops

- machinery space bulkheads.

Normal packaging is twenty-five tiles to a box.



SOUNDOWN Vibration Damping Interlayer for Wood (WDI) is used to create acoustically dead wood. By deadening a piece of wood, an improvement of its sound and vibration isolating qualities is achieved. Contrary to a common misconception, untreated wood is not a highly effective sound isolator - witness the violin as a fine sample of vibrating wood radiating noise (music if well played).


Soundown WDI:

Sheet size: 31" x 48.5"

Thickness: 0.07"

Weight: 0.4 lb/ft2

Color: black




SOUNDOWN Vibration Damping Interlayer for Metal (MDI) is used to damp (deaden) vibration in aluminum and steel plates. Damping of plates can reduce vibration and the resulting noise radiated from vibrating plates and panels. Noise sources which have been effectively treated with MDI include:

- structureborne noise in machinery foundations, tank tops, and bulkheads,

- propeller cavitation noise in hull bottom plates,

- water slap and water spray noise generated at the chine and spray rails.

Normal application requires installation of the Soundown MDI interlayer to the panel being treated and covered by a metallic panel having a thickness of 25% that of the base structure. This treatment is usually applied over 70% of the base structure.

For base structures of 1/8" to 1/2", a vibration damping loss factor of about 0.10 is achieved over the frequency range 125 to 1,500 Hz. (This loss factor corresponds to a material that will "thump" and not "ring".)

Soundown application engineering assistance can help determine the appropriate MDI treatment for your project.

Soundown MDI:

Roll size: 20" x 79'

Thickness: 0.04"

Weight: 0.26 lb/ft2

Color: black

-Click here for installation instructions of MDI

DC 3 Damping Compound Product Information

Vibration noise is an unwanted sound, DC 3 is a mastic viscoelastic sprayable dampening coating that increases the sound transmission loss of materials to which it is applied and reduces vibration sound.

DC 3 is suitable for airport facilities, air conditioners, automobile components, buses, cabooses, construction components, electrical fabrication, metal furniture, metal cabinets, plastics, rapid transit cars, refrigerators, metal sinks, and truck cabs.

Physical Properties (typical batch)

Color                                 Light Tan

Viscosity                          Sprayable mastic consistency

Solids by Weight                 55%

Weight/Gallon                10.95 lbs

Flash Point                         None

Non-Bleeding                         Non-Asphaltic

Odor after Drying                 None

Chemical Resistance        Resistant to dilute acids, alkail, grease, gasoline, aliphatic oils, and vermin.


Surface must be clean and free of foreign matter. Adhesion is very good on stainless steel, bonderized steel, primed steel, wash-primed galvanized sheet metal, and wash-primed aluminum.

Conventional Spray: Use a round " spray tip, " i.d. material hose, a Graco mastic type pump 8:1 or 10:1 ratio or equivalent.

Airless Spray: .043: - .051: spray tip, " i.d. material hose, a Graco Hydra-Mastic pump 20:1 or 30:1 ratio or equivalent. For best results use 30:1 pump with follower plate.

DC 3 is ready for use as received. If conditions should require thinning, use water sparingly.

The coated surface may be painted when thoroughly dry.


1/32" wet film at room temperature dries hard in 3-4 hours.

9/64" wet film at room temperature dries hard in 24 hours.

Where faster drying time is required, use forced ventilation, heat or infra-red light. Keep artificial heat below 200 F.


After use of equipment, it may be flushed with water.


CAUTION : Latex Emulsion. Protect from freezing!



Visceolastic Glue DG-A 2

Designed for use as a damping layer between two porous surfaces such as plywood or chipboard

This is a water-solvent glue in its liquid form which will provide exceptionally high vibration damping properties

Typical applications are in increasing overall insertion loss Of panels in vehicle flooring, improved transmission loss in doors, walls and partitions, reduction of impact sound in floors and to improve the quality of sound from a loud-speaker.



Density:                                                    1000kg/m3

Solvent:                                                     water            

Solids content (by weight):                      69%

Drying time:                                              4-6 hrs

Performance Temperature Range:        0-+40 C

Fire classification:                                    No Risk

Shelf Life:                                                  At least six months in an unopened drum.

Drum size:                                                12 and 125 kg



Application by roller, trowel or reverse roller coater. The glue should be applied directly to a clean, dust-free surface to a depth of approximately, 0.7 - 1 kg/m2. A pressure to ensure good contact over the whole surface shall be applied whilst drying. Tools may be cleaned with water.