The first layer

The sub- base layer consists of crushed limestone. This initial layer helps assist with drainage and also forms a firm, solid base. For best results, we suggest this should be up to 35/40mm thickness. 1 cubic bulk bag will cover 15/18 square metres.

The second layer

The next step is to then apply your sharp sand…

What is sharp sand?  

‘Sharp sand’ is coarser texture than ‘soft’ sand and has larger grains in it. It’s generally used for making concrete. It’s an extremely flexible product; its uses are varied although it is primarily used for concrete production.

How much sharp sand should you use?

We recommend laying sharp sand to the thickness of 10/15mm . The sand is only there to blind the top of your sub-base, so it should be firm. (Granite dust is also an alternative if you can’t get your hands on sharp sand) I cubic bulk bag should cover between 20/25 square metres.

You might want to compact the sand down to provide as smooth a surface as possible. Your sand should come level to the top of the timber edging you have inserted around the perimeter.

Too much sand will cause dips, humps and bumps when you eventually lay your grass over the top. You might want to hire a vibrating plate for this or use a heavy-duty roller.

If you lay fake grass on top of an uneven surface it can become bumpy and shift over time.

Weed membrane layer

Once the layers are completed apply a membrane to the area. This will prevent weed growth (which may damage your new lawn) and assist with water drainage.