Sandstone australia

SAI SANDSTONE
Paving Installation – Concrete Base

 Prepare the concrete base.  The concrete area should be firm, solid, reliable and have no cracks, it should also be a flat surface. If not flat, by screening on top of concrete you will produce a flat surface.

Foundation requirement
a) compacted crush rock 50mm
b) minimum 75mm of 25mpa or higher concrete
c) minimum of F52 or above steel mash
 
 Paving: avoid join line of the concrete slab, use the concrete line as sandstone paving joint line or expansion joint line. This is to avoid the concrete slab from moving so you do not crack the pavers.

 Gap: you can leave between 3mm to 10mm joint depending on the design you want to achieve

 Glue: Tile adhesive and Cement base can be used. Check the glue manufacture for the suitability for sandstone. 

 Grout: Tile grout can be used, it is recommend that use of light colour’s of grout be applied to get less change, otherwise it can make sandstone look dirty or stained.

To use between joints instead of grout

 1 part cement
 1 part Limil (Limil is for elasticity)
 4 parts sand

 Expansion Joint:
a) Pool surrounding: always put an expansion joint after the coping stone. This is because the coping stone may change in wet and dry conditions which could cause either expansion or shrinkage of the coping and the expansion joint will help with any movement.

b) Put an expansion joint where a paving area length or width is more than 6 meters long this will also assist with any movement that may occur.

 Sealing: Depending on the area you are sealing they sometimes require different sealers for their protection, please check the sealing information sheet for relevant details.

For more information, please call SAI SANDSTONE service line 1300 855 851