Although paving can be directly laid onto a 50mm layer of sharp sand on top of well tamped soil cleared of vegetation, for greater stability it is highly recommended that paving is laid on a bed of firm foundations. Always dry lay first to make sure you are happy with the pattern and as a check on the size of the finished area. Allow approximately 10 to 15 mm joints for pointing; more for paving with fettled edges.

 

If your patio is an unusual shape, choose a paving range which offers a variety of different sized stones to minimise cutting, for example, Old Town, Wethered Riven or Natural Sandstone paving. If using more than one pack of paving, mix packs as you lay to ensure random distribution of any possible shade variations.

Trowel

spade

rubber mallet

spirit level

pointing tool

tape measure

brush

 

 

1. Allow at least 150mm below the damp proof course and dig down another 150mm for the paving/foundations. This applies to the whole area to be paved. Ensure that water cannot collect beside buildings by allowing a slight fall away to a convenient place.

 

2. Cover the entire area with a semi-dry foundation mix of 6 parts all-in ballast to 1 part cement to a minimum depth of 75mm. This should be firmed with a piece of timber. Remember to allow for the thickness of the paving stones on the mortar bed.

 

3. Lay the first paving stone in the corner of the area to be paved on a bed of mortar (3 or 4 parts building sand to 1 part cement). Tap down the centre of the stone with a wooden or rubber mallet to the required height. Repeat, ensuring that the paving is level using a spirit level and the joints are evenly spaced.

 

4. On completion, point the joints using a semi-dry mortar mix of 3 parts building sand to 1 part cement. The mix should not be too wet or too dry.

When laying Natural Sandstone paving, it is recommended to choose the larger side as your patio surface with the edges tapering inwards slightly to the underside. Always lay on a full bed of mortar to allow for varying thickness of the stones (typically 25 to 40mm).

When laying Natural Internal Travertine make sure the floor is flat, level and dry and use a proprietory tiling adhesive, following the manufacturer’s instructions. Use a suitably coloured grout to finish and enhance the flooring. It should also be sealed, using a proprietary natural stone sealer.