Impactafoam - Installation Guide

Installation with Timber Floor Joists
Installation with Floor Battens
Installation with Laminate Floors
Installation with Finishing Screed
Installation with Stud Partitions

Installation with floor joists

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This is a very cost effective way of reducing impact noise in a conventional timber joisted floor. The Impactafoam self adhesive batten strips are supplied in roll form and are simply applied to the top of the joists, providing a resilient seating for the boards. The floor is installed by positioning 50 x 50mm timber battens directly underneath the floor boarding, and centrally between the joists, running parallel to them. The boards or sheets are screwed to these battens and not the joists. The battens hold the boards together and the whole floor floats on the Impactafoam strips. The boards must be left free of the perimeter walls and skirting, to avoid flanking sound. Impactafoam can be used as a gasket between the boards and the perimeter walls and skirting.

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Installation with floor battens

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Impactafoam may also be used as part of a raft floor construction on top of a concrete base. Self adhesive strips are applied to 50x50mm timber battens and laid on top of a 13mm thick 36kg/m³ insulation quilt over the concrete floor. Boards or sheets are then fixed to the battens giving a floating raft layer. The chipboard should be isolated from the perimeter walls using strips of Impactafoam.

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Installation with laminate floors

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This is an ideal and cost effective method of reducing impact noise caused by footfalls or the movement of furniture on a timber laminate surface. Impactafoam is simply rolled out onto the structural floor and should return up all perimeter walls or columns to stop sound bridging. The laminate floor is laid on top, and should butt up to the Impactafoam at the perimeters. Any overlap should be cut away with a trimming knife. This will insulate the laminate floor from the structure.

General Installation Notes

There are a vast number of floor finishes available, and, as such, the installation guidance shown is given in good faith and to the best of our knowledge. The final decision regarding the compatibility of any floor finish installed onto Impactafoam must remain the responsibility of the flooring contractor / installer. If in any doubt, please seek advice from the floor finish manufacturer.

Installation with finishing screed

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The floor surface must be clean and free of any material that could puncture the foam. Impactafoam is supplied in 1m wide rolls and is laid loose onto the concrete. Edges of adjoining sheets should be overlapped by 150mm and Impactafoam should be turned up at perimeters 25mm above the finished screed level to prevent flanking via the walls. Services penetrating the screed should be isolated by wrapping in Impactafoam. The surface of the Impactafoam should be covered with a 20 x 20mm wire mesh layer to protect it from puncture when the screed is being laid.

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Impactafoam is perfect for providing a resilient base to reduce structure borne noise in timber or metal stud partitions, forming a good seal, it will also reduce the leakage of airborne sound. Easily applied in self adhesive strips, they must cover the total width of the partition including the skirting.

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