These circular shims are styled and shaped in the same design as the standard plastic levelling shim, but are made from rubber instead of plastic to reduce sound and vibration from traffic passing to the roof deck below.
The shims are 2mm or 3mm thick and are suitable for both paving and timber decking support pads and pedestals. They act as an effective vibration or sound control layer. They deaden the sound of pedestrian traffic over slabs, tiles or timber decking.
Levelling shims have been designed to fit on top of all fixed height support pads and will make up those small differences in the level. To avoid one of the slabs rocking, applicators can simply hang a levelling shim onto the support pad to make up the difference.