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Laying

Laying Generally

Ensure that the sub-base is reasonably accurate and to specified gradients before laying paving. Cut blocks neatly and accurately without spalling 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 to produce a thoroughly interlocked paving of even overall appearance with regular sand filled joints and accurate to line, level and profile.

Laying Pavers

Commencing 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 to ensure the maintenance of accurate bond. Infill with cut blocks as appropriate at edge restraints as work proceeds.

Wherever the type of bond and angle of edging permit, 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, then lay and screed to level a further uniformly loose layer.

This should have sufficient surcharge to give the required finished levels and an overall bedding thickness of not less than 50mm after compaction of the paving.

Post-compaction method Subject to approval of accuracy and regularity of the finished 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 layingimmediately 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 at all times and not more than 1 metre at the conclusion of any working period.

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.

High skid resistance paving BS Technical specification

All cement and bituminous bound surfaces eventually show a degree of polishing during use. This produces lower slip skid resistance and can be more dangerous in wet weather.

Hanson Formpave have developed High skid resistant blocks and paving manufactured from gritstone with a polished stone value of 70.

Hanson Formpave standard products possess excellent wet skid resistance.

There are, however, occasions when enhanced skid resistance surfacing is desirable, for example:

• on steps
• on access ramps
• on areas to be used by elderly or infirm people
• on roads with heavy traffic loading
• or in shopping precincts

The polished skid resistance of Hanson Formpave products can be increased by bush hammering the surface, by manufacturing in high PSV gritstone, or by a combination of both.

Adverse Weather

Do not use frozen materials or lay sand bedding on frozen or frost covered sub-bases. Protect stockpiled bedding sand to ensure it does not become saturated. Protect uncompacted areas of paving from heavy rainfall.

Product development

The designs shown in this brochure are illustrative only. Every effort is made to ensure the accuracy of all textural and pictorial content in this brochure. Hanson Formpave reserves the right to change specifications without prior notice. All Hanson Formpave paving products are backed by BS EN ISO 9001 certification for product quality and service.

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.

Colour and finish variation

Hanson Formpave products are manufactured from naturally occurring materials and consequently may show slight variations in finish and colour.

It is strongly recommended that products are taken from two or more packs and mixed during laying to minimise any colour variation.

All concrete products may suffer from efflorescence. This occurs naturally and will disappear with use. It is in no way detrimental to the performance of the product. No responsibility can be accepted for this natural reaction.

Colour reproduction

Every care has been taken to reproduce the colour of the blocks in this brochure as accurately as possible. However, we cannot guarantee the exact colour reproduction.

Maintenance and Care

All paved surfaces will require occasional cleaning. In normal circumstances, regular sweeping will be sufficient. A range of specialist cleaning products are available; contact your local merchant for details. It should be noted that lighter coloured blocks may exhibit tyre marks and will therefore require more cleaning and maintenance when used in certain situations.

Advisory service

Hanson Formpave are pleased to offer detailed technical advice on all products

Samples

Sample blocks are available from your nearest Hanson Formpave Stockist upon request.