Karma Acoustic Joist Hood Insulation

Karma Acoustic Joist Hood Insulation: is suitable for use in the refurbishment of timber joist floors within masonry constructions and also useful in "Room in a Roof" applications. Consists of a 12mm profiled low-density polyethylene foam with gas impregnated acoustic additives. Specifically designed to friction fit onto the joists.

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Karma Acoustic Joist Hood Insulation - Acoustic Joist Cap

Karma Acoustic Joist Hood Insulation: is suitable for use in the refurbishment of timber joist floors within masonry constructions and also useful in "Room in a Roof" applications. Consists of a 12mm profiled low-density polyethylene foam with gas impregnated acoustic additives. Specifically designed to friction fit onto the joists. Karma Acoustic Joist Hood Insulation does not represent an "all in one solution" but just a part of it, being used in combination with other soundproofing products.

Dimensions: 12mm x 50mm x 2000mm

Karma Acoustic Joist Hood Insulation represents a very cost effective method of reducing impact sound while improving airborne soundproofing as well.
If your looking to reduce impact sound while maximising airborne sound reduction with minimal floor build up we would recommend acoustic caps over the tops of each joist. This option will keep to a minimum floor height increase.
With this solution we are attempting to maximise the mass of the floor to reduce airborne sound transmission while dramatically improving the foot fall sound being generated from the floor. Coupling the resilience layer provided by the acoustic joist strips and other recommended soundproofing solutions can lead to a powerful combination in reducing airborne and impact sound transmission.
Acoustic joist caps are unsuitable to use under floorboards, which need mechanical fixing. This solution is creating a floating floor. In terms of impact attenuation achieved and cost and ease of fitting this solution it offers a cheaper and more effective alternative to other solutions which incorporates the use of expensive metal hangers.

Schematic diagrams covering some situations:

Example 1:

Example of using Karma Acoustic joist hood insulation - solution 1

Example 2:

Example of using Karma Acoustic joist hood insulation - solution 2

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