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Step 1: Locate your wall

Mark out the ground where your wall will be located (either by marking with stakes and a string line or by making a line on the ground with spray paint). Excavate trench then compact roadbase roughly 100mm thick into the trench to form a levelling pad

Step 2: Prepare the site

Place blocks side by side on the levelling pad using a string line along the back of the units for allignment. Level each unit side by side and front to back using your spirit level.. Spend time making sure the first course of units is level, otherwise all ensuring courses and ultimately the entire wall will not be level

Step 3: Backfill and compact

Install an argricultural drain up to 150mm diameter behind your first course and surround with drainage gravel (10mm - 20mm sized gravel, e.g. blue metal). Shovel and compact your backfill (existing site soil) behind the drainage material. (Backfill consisting of heavy clays or organic soils is not recommended due to water holding properties)

Step 4: Additional courses

Sweep he top of the previous course clean. Place the next course of units in a running bond pattern (i.e. with the vertical joints from the first course units halfway across the second course units). Pull each unit foreward until it locks with the nib on the unit below. Place the drainage material behind the second course of units. Stack units, placing drainage material and compact backfill for each block height layer until your wall is complete.

Step 5: Fixing capping units

Place capping units, if required, on the top course. It is recomended that caps be secured using construction adhesive such as liquid nailsĀ®

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