The following information is provided to assist you to achieve the best result for your paving project. It is to be used as a guideline only, as different projects will have varying requirements and site conditions, which may necessitate varying methods of preparation and installation.
We recommend that suitably qualified and experienced contractors be engaged, or at least consulted, for your project. This is especially important during the planning stage as individual sites will have differing design requirements for items such as drainage, sub-grade preparation, structural adequacy etc.
Important issues to be considered during the planning stage include, but are not limited to:
This is probably the most important aspect of ensuring a satisfactory long term result. Any soft areas should be replaced with suitable stable material and compacted with the remainder of the preparation area.
Design of the proposed paved area should take account of surface and subsurface water. Consideration for the control of stormwater runoff will be required, along with services which may be required to run under the paved area, such as drainage pipes, water pipes etc. Poor or inadequate drainage will cause staining and effect paver performance.
It is important to determine the required finished levels for all areas of your project, not only the paving, when planning the project. Correct level design is essential to ensure the drainage issues mentioned above are accommodated.
Ensure that the highest point of the paving is below the damp proof level of any buildings.
To minimise the possibility of marking the pavers when handling them on site, it is recommended that clean gloves are worn.
To minimise the chance of subsidence or deflection, pavers must be laid on concrete, or a sub-base material that is suitable for the site conditions applicable to your project. Use string lines as a guide to maintain the accuracy of the paving lines or patterns.
There are two main methods for laying large format pavers.
Rigid Base (Concrete)
When laying pavers on a structurally sound concrete slab they should be either bedded on a sand and cement mortar bed up to 30mm thick, or glued down using a suitable flexible adhesion agent, taking care to ensure there are no voids which could cause drumminess or structural cracks. (Note:- Bullnose pavers should be glued rather than mortar bedded.)
If there is any chance of deflection or cracking in the slab, such as caused by movement in the sub-grade material, then the flexible adhesive (10 – 12mm base) is recommended.
For wet grout joints we recommend 5-10mm. When filling the joints all excess material must be thoroughly cleaned off immediately and progressively, using clean water and a sponge. Change the washing water regularly. DO NOT USE ACID.
Expansion joints must be incorporated in paving layout. If in doubt, seek advice from a suitably qualified person.
For butt joints, sweep clean, fine, dry, jointing or gap sand between the pavers. Do not leave excess sand on the pavers as this could stain the surface.
If the pavers are being used for a driveway, it is essential that a suitably qualified and experienced contractor carries out this work. The pavers must be laid on a structural concrete slab.
Flexible Base (Compacted Sand)
This method is suitable for use in foot traffic areas only. As above, good sub-grade and level preparation is essential.
Evenly spread a layer (approx. 100mm thick) of roadbase or manufactured sand over the required area. Compact this material using a plate compactor.
It is preferred that the pavers are laid on a mortar bed made of three parts sand and one part cement to a maximum of 30mm thick. If a mortar bed is not being used, the pavers should be laid on a bedding layer of washed sand (20 – 30mm) which has been spread and leveled on top of the compacted base.
Edge restraint should be used around the edge of the paved area to prevent horizontal movement of the pavers and washing out of the bedding material.
Sweep clean, fine, dry, jointing or gap sand between the pavers. Do not leave excess sand on the pavers as this could stain the surface.
Because of their large size, Newtech Pavers should be laid and levelled individually.
If a plate compactor is used for concrete pavers, then the metal base must be covered with a double layer of carpet to minimise damage to the pavers. Plate compactors should not be used with stone pavers.
Newtech Pavers must be cut with a wet-cut diamond saw. All dust and cutting slurry residue must be washed off immediately – before the paver dries – as it will stain. DO NOT USE ACID.
Handling and Site Storage
To provide optimum protection from the elements, concrete pavers are fully wrapped on the pallet. This wrapping should be left in place until the pavers are ready to be used.
Do not cross-stack pavers, or lean them up against each other – even for short periods of time.
If the pavers are to be stored on site for a period of time after they have been unpacked, it is important to protect them from the elements which may cause discolouration or staining. If they are being restacked, do so in the same way they are stacked on the pallet, re-using the foam packaging between layers. Then cover them with plastic or a tarpaulin.
It is Newtech Pavers‘ intention to recycle our pallets wherever possible. Please contact either your supplier, or Newtech Pavers (0249321311) to arrange recovery of the pallets.