Laying Generally
Ensure that the sub-base is reasonably accurate and to specified gradients before laying paving. Cut blocks neatly and accurately without spalling. This must be done to give neat junctions at edge restraints and changes in bond.
Select blocks from three separate packs in rotation to minimise colour variations. Lay blocks on a well graded sand bed and vibrate.
Laying Pavers
From an edge restraint lay blocks hand tight. Do not use mechanical force to obtain tight joints. Place blocks squarely with minimum disturbance to bedding sand.
Supply blocks to laying face over newly laid paving but stack at least 1 metre back from laying face. Do not allow plant to traverse areas of uncompacted paving.
Continually check alignment of blocks by the use of string lines. Do this to ensure the maintenance of accurate bond. Infill with cut blocks as appropriate at edge restraints as work proceeds.
Avoid very small infill pieces at edges by breaking bond on the next course in from the edge. Avoid using cut blocks smaller than one third full size.
Laying Bedding
- Pre-compaction method lay
Level and compact a layer of bedding material to a thickness of approximately 35mm. Lay and screed to level a further uniformly loose layer. This should have sufficient surcharge to give the required finished levels. Overall bedding thickness of not less than 50mm after compaction of the paving.
The bedding may be laid in a single layer thickness after compaction to be not less than 25mm at any point. Do not leave areas of bedding exposed; proceed with laying immediately after screeding. Maintain a prepared area of bedding not less than 1 metre and not more than 3 metres in advance of the laying face.
Do not deliver bedding sand to working area over uncompacted paving. Prevent disturbance to the bedding course by pedestrian or wheeled traffic. Fill, re-screed and re-compact any parts of the bedding layer which has been disturbed.
Joint filling sand
Hanson FORMPAVE specially kiln dried sand is recommended for use with all types of concrete block paving. Available in 25kg bags, one bag covers approximately 8 - 10 sq meters.