Dry laying over an existing concrete slab is an alternative method to installing on fixed height rubber pads, which will ensure a quieter surface when walked on as well as providing enhanced load bearing capacity.
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Step One
A restraining perimeter wall should be installed prior to laying the pavers unless it is in direct contact with a footpath, wall or an existing edge that is sufficiently rigid. The perimeter wall should be fixed to the concrete base with mechanical fixing devices or constructed as a solid barrier using poured concrete.
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Step Two
Drill ½” diam. drainage holes 24” on center through the concrete to provide additional drainage (if required).
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Step Three
Place a sheet of geotextile fabric on top of the concrete to contain the bedding sand. Fill the area with sand to a thickness of approx. 1” and compact with a vibro compactor.
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Step Four
Level the surface by sliding a wood or steel board placed on two parallel runners across the entire area, again ensuring there is a slope of approx. 2%.
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Step Five
Taking care not to disturb the sand bed, lay the pavers using 3/16” min. spacers. Carefully tap the pavers with a rubber mallet to ensure they are not rocking on the sand bed and that they are level with each other.
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