| The Need for Insulation | |||||||||
 When looking at he source of unwanted noise you will frequently find the "environment" has a large part to play in the problem i.e. engines encased in housing which cause noise to echo from bare surfaces. This is illustrated by considering how noise is transmitted in an empty room, compared with the same room furnished with carpets and curtains etc. which absorb sound considerably. Bonding We recommend affixing our engine insulating sheeting using Bostik Fast-Tak Multipurpose Spray-On Adhesive Alternatively any strong adhesive designed not to damage foam may be used. Mechanical fastenings can also be used either in addition to or as an alternative to adhesives.
All the above types of sheeting are available in larger sheet sizes (120x100cm & 120x200cm) which are less expensive on a square metre basis. However they are also more expensive to transport and are suggested therefore where the quantity and order value is large enough to overcome the extra transport costs. |
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| All of the above types of sheeting include a single layer of polymeric barrier of mass 5kg/m.sq, except the 45mm thick types which include double polymeric barrier, and three layers of class 'O' foam. | |||||||||
| Class 'O' Foam for Flame Resistance |
| There are many different types of foam in common use, and all are available to special order. Class 'O' foams are recommended for marine applications because of their superior flame resistance characteristics. Our Acoustic/Insulation Foams do not support combustion , melt or drip. When tested to B.S.476 Parts 6 & 7, Our Foams achieve class 'O' to the British Building Regulations. The addition of a heavy layer of filled Polymer Barrier enhances the mass of the product giving improved sound insulation properties. The thickness of the inner and outer layers is adjustable and modifies both the overall mass and the absorption & insulation performance. |
| Construction / How it Works Four layers are laminated together, this type of construction reduces noise greatly. |
| Top Layer A choice of facings is available to protect the foam. Tough and flexible, and being 'transparent' allow noise to be absorbed. Unfaced foam sheets become dirty quickly and are difficult to clean. Barrier Layer Our standard stock lines include a mineral loaded Polymeric Barrier, with a mass of 5kg.m.sq, and fire rating BS4735:1971 self extinguishing. Mean sound reduction index 22 dB to 150 R140 (Lead barriers are available to special order). Isolation Layer A this layer of foam stops noisetransmitting from the barrier layerto the bulkhead. Absorption Layer Class 'O' fire resistance foam varying in thickness for different applications. |
| The Need for Insulation | |||||||||
| When looking at he source of unwanted noise you will frequently find the "environment" has a large part to play in the problem i.e. engines encased in housing which cause noise to echo from bare surfaces. This is illustrated by considering how noise is transmitted in an empty room, compared with the same room furnished with carpets and curtains etc. which absorb sound considerably. Bonding We recommend affixing our engine insulating sheeting using Bostik Fast-Tak Multipurpose Spray-On Adhesive Alternatively any strong adhesive designed not to damage foam may be used. Mechanical fastenings can also be used either in addition to or as an alternative to adhesives.
All the above types of sheeting are available in larger sheet sizes (120x100cm & 120x200cm) which are less expensive on a square metre basis. However they are also more expensive to transport and are suggested therefore where the quantity and order value is large enough to overcome the extra transport costs. |
|||||||||
| All of the above types of sheeting include a single layer of polymeric barrier of mass 5kg/m.sq, except the 45mm thick types which include double polymeric barrier, and three layers of class 'O' foam. | |||||||||
| Class 'O' Foam for Flame Resistance |
| There are many different types of foam in common use, and all are available to special order. Class 'O' foams are recommended for marine applications because of their superior flame resistance characteristics. Our Acoustic/Insulation Foams do not support combustion , melt or drip. When tested to B.S.476 Parts 6 & 7, Our Foams achieve class 'O' to the British Building Regulations. The addition of a heavy layer of filled Polymer Barrier enhances the mass of the product giving improved sound insulation properties. The thickness of the inner and outer layers is adjustable and modifies both the overall mass and the absorption & insulation performance. |
| Construction / How it Works Four layers are laminated together, this type of construction reduces noise greatly. |
| Top Layer A choice of facings is available to protect the foam. Tough and flexible, and being 'transparent' allow noise to be absorbed. Unfaced foam sheets become dirty quickly and are difficult to clean. Barrier Layer Our standard stock lines include a mineral loaded Polymeric Barrier, with a mass of 5kg.m.sq, and fire rating BS4735:1971 self extinguishing. Mean sound reduction index 22 dB to 150 R140 (Lead barriers are available to special order). Isolation Layer A this layer of foam stops noisetransmitting from the barrier layerto the bulkhead. Absorption Layer Class 'O' fire resistance foam varying in thickness for different applications. |
