For PermeaPave see section....

Edge Restraint

  • Paviors must be surrounded by a firm edge restraint to stop the blocks and sand layer from creeping.
  • Kerbs are usually best, but walls, decorative edgings or the paviors themselves can also be used as restraints.
  • Lay the restraint on a concrete bed, haunching kerbs or edgings in concrete and allow to cure and strengthen before any vibration.

Screeding

  • Screed out a layer of coarse concreting sand to a depth of 65mm on the excavated area and within the edging.
  • Compact the sand with a plate vibrator.
  • Add more sand and screed off to give a firmly compacted thickness of 50mm. (One tonne of sand covers about 8m2.)

Laying

  • Start from a corner or long edge and proceed along one laying face. Place individual blocks vertically onto the sand bed according to the pattern.
  • It is important to mix blocks from several packs to achieve a good blend of shades.
  • Use stringlines and adjust the width of the joints to within 2-5mm to ensure the lines in the pattern remain straight.

Cutting

  • To fill gaps along edges, cut the blocks using a hammer and bolster chisel.
  • For a lot of cutting, use a mechanical block splitter or power cutter with an appropriate blade.
  • Avoid cutting and laying blocks less than a quarter of their original size.

Vibrating

  • Using a stiff broom, brush bedding course sand over the paviors to partially fill the joints and ensure stability during initial vibration.
  • After ensuring the surface is clean, vibrate the paving to settle the sand in the joints.
  • Top up the joints with our Pavior Jointing Sand. Sweep the surface and then pass the vibrator over the whole area several times to level the paviors.
  • Brush more Pavior Jointing Sand over the area to ensure all joints are topped up and make one more pass with the vibrator. The paving is then ready for immediate use.
  • RENAISSANCE, DRIVESTONE and PENNON We recommend using a rubber mat when vibrating to protect undulating surfaces.

Specific Advice

(A) RIO, RYTON AND STRETTON PAVING
* Not suitable for vehicles.
* Do not use a vibrator on top of the paving. Level off with a paver's maul.

(B) RENAISSANCE PAVIORS
* Wider top joints need special consideration for permanent filling. Refer to www.stonemarket.co.uk

Stonemarket PermeaPave - Permeable Block Paving

Stonemarket PermeaPave - Permeable Block Paving For a comprehensive guide to installing PermeaPave we would strongly advise refering to the Stonemarket PermeaPave Technical Installation Guide, available by calling 024 7651 8700 or at www.stonemarket.co.uk
Conditions required for PermeaPave
PermeaPave featured in this brochure is intended for pedestrian traffic, domestic vehicles and commercial vehicular overrun occasionally expected on a domestic property. In limited parts of the country there are ground conditions where infiltration could adversely affect foundations to houses. If in doubt seek advice from the Local Authority Building Control Department or specialist.
For properties constructed prior to 1920 foundations should be checked, on excavation to ensure they are built on traditional concrete foundations. If not, then the PermeaPave paving should not be installed.
Check for services, if gas or electric services run through the intended area then advice from the service provider must be sought before Permeapave is installed.
Guidelines for installing PermeaPave
Surface Gradient
The intended PermeaPave area must fall away from the property and buildings in the immediate vicinity.
If the driveway exceeds 20m in length or has a gradient greater than 1 in 100, please refer to information in the PermeaPave Technical Installation Guide. The top surface of the driveway should finish at least 150mm below the DPC level of an adjacent building.
Existing foundations
If a property is less than 600mm from the proposed PermeaPave area the depth of the house foundation must be established prior to any soil test or installation. The house foundation top surface must be 600mm (minimum) below the finished level of the top of the proposed PermeaPave driveway.
A test to assess soil strength and permeability should be undertaken to ensure suitability of
this system. Please refer to the Technical Installation Guide for full details.
Health and Safety
It is possible that more excavation for a PermeaPave driveway may be required than that of a driveway constructed of traditional block paving, therefore, care must be taken when excavating ground to a deeper level. Particular care must be taken to protect the sides from children and partially sighted persons and for collapse of adjoining features such as boundary walls/fences.