Firwin can supply special sound insulation products. These products are made from foam composites, rock-wool panels and fiberglass with sound membranes, designed to limit equipment noise to acceptable levels.

Once we understand your needs, we will recommend the materials best suited to maximize the noise reduction in your work place.

Panels

We supply:
1. Acoustic Rock-wool panel liners for engine compartments & engine rooms.

2. Mass loaded Acoustic vinyl’s combined with foam decouplers/absorbers specially designed for engine enclosure liners and piping. When using these products, care must be taken to maximize the natural temperature limitations of the foam and vinyl materials.

Examples of foam composite panels.

Blankets
Where sound enclosures are not practical, due to space considerations, special sound attenuation blankets can be manufactured. Firwin makes custom removable blankets to solve a wide range of operating situations combining energy saving heat insulation (for both high and low temperature conditions) with sound attenuation. We use a combination of fiberglass mat for the higher frequency bands, and membrane for lower frequency bands.

Our standard blankets use 12lb/cuft fiberglass insulation encased in a silicone impregnated fiberglass outer cover, which has a NRC factor of 0.75. To improve the sound attenuation especially in the higher Hertz range, we combine loaded membranes with the glass matt. Normally we use 2" thick blankets and dependent on the application and specific site restrictions have achieved up to 8-10 dB overall reduction.

A. Engine and exhausts; Exhaust temperature up to 1100F [590C]

B. Industrial
Examples of sound attenuation applications that we manufacture are valve covers, screw pumps, vacuum equipment, sound screens and ducting. Depending on the octave bandwidth requirement, we make basic blankets or special composite blankets to obtain the acceptable level of sound attenuation.

Composite blankets are only used in cases where regular enclosures are not practical (because space is at a premium).

Examples of foam composite panels.