Mix the HSBC to a moist consistency using 2.2-2.5 litres of water, enough to form a “snowball.”
Only mix what’s needed to lay pavers while the product remains moist.
Lay the HSBC with a sufficient surcharge to achieve the specified compacted bedding depth.
For 40mm depth, the initial depth may need to be 10-20mm deeper before compacting with a maul.
Pre-soak paving units if necessary.
Prime the base of each paving unit with a 1-2mm layer of fresh slurry, either by brushing or dipping.
Lay the unit by ramming it into place with a maul, ensuring the correct level and laying depth.
For depths over 75mm, apply a layer-by-layer method with priming slurry between layers.
3. Jointing with Rapid Set Jointing Mortar
Ensure the paving and joints are clean before applying the jointing mortar.
Wet the paving surface immediately before jointing to prevent staining.
Mix 4.25 litres of clean water per 25kg bag of mortar, creating a lump-free slurry. Do not remix or add water later.
Pour the mortar onto the pre-wetted surface and brush into joints with a soft brush or squeegee.
Fill joints to the surface, allowing for settlement, and remove excess mortar with the squeegee.
Lightly spray water as the mortar hardens to assist with cleaning.
Once the joints harden (around 15 minutes, depending on temperature), clean the surface with a steady water flow and diagonal sweeping to prevent staining.
Use a belt cleaner if needed, and inspect the surface to ensure all excess mortar is removed.
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