To install cracker dust, you will need a plate compactor, screeding bars, concrete screed with level and/or soil spreader. All of these can be hired or bought from your local hardware store or landscape yard.
Existing sand will need to be excavated to a depth of around 100mm below finished floor level (FFL). FFL refers to the final level your grass will be at, usually determined by existing hard surfaces such as your alfresco area, pathways, driveways or doorways.
Not all areas have one, consistent FFL. If your area is sloped you will need to contour the area to meet all FFLs as gently as possible. For example installing in a front yard, your house may be elevated higher than footpath level. Your driveway might slope and the footpath may also slope up the road. You will not be able to use screed bars over an entire area that isn’t flat. Contouring an area can be difficult and done partly by eye.
Pile the cracker dust into the prepared area and distribute it to an even depth over your area with a concrete screed with level, screeding bars and/or soil spreader where possible.
We recommend using 70-100mm of cracker dust when installing artificial grass to allow for drainage and to secure the grass fully. However, cracker dust can be installed at a depth of 50-100mm depending on the intended use.
Wet the cracker dust thoroughly and compact with a plate compactor, filling any low points after the first compaction and compact again. After the first compaction, use a notched piece of timber to screed around the edges that are at finished floor level to ensure your artificial grass will sit evenly. On dry days we suggest you spray the cracker dust with a hose whilst you compact to reduce dust.
We recommend wearing earmuffs and steel cap boots when compacting.
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