Paving Installation

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See the tools, materials and maintenance products you will need to install your new paving and how to fit them


It is essential that all products should be inspected on receipt of delivery and inform Grey Grey Slate & Stone Ltd of any damaged products within the specified time given so that we can arrange replacement. We will not accept any responsibility for any additional cost for re-laying, delays or removing cost if this has not been done.

Protective Clothing & Essential Tools

For a professional look to your paving we recommend that the following tools are used and for Health & Safety reasons the protective clothing are worn: Goggles, gloves, knee pads, shovel, brick trowel, pointing trowel, rubber mallet, lump hammer, string line, stakes, spirit level, soft brush, tape measure, straightedge timber, wheelbarrow, cement mixer, angle grinder and plate compactor. If you are only planning a single project, you may consider contacting our local Tool Hire firm for advice to which tools you could hire

Water drainage and how to create a fall

Paving should be laid with a slope to create a fall for water to run off the surface in to the gully, linear drain or run off in to the garden. Water should all ways run away from any buildings. Natural Slate paving will have a riven textured surface water can sit on this type of surface more easily due to its natural surface. Natural slate should be laid with a fall of no less than 1:60 this might be no less than 1cm in 60cm or 1 meter in every 60 meters, this will generate a fall of 1:60 (or 17mm in meter) When setting levels away from buildings a string line and stakes are advised, it’s a good way of setting both levels and alignment. The best way to create an accurate 90deg right angle from the building is to use 3-4-5 method.


The strength of the base varies based on each project e.g. driveways, paths or terraces. The depth and strength depends on the project type for example a driveway would require 100mm thick concrete base layer and walk ways or projects that require light traffic can be laid on top of a 60mm screed or mortar both options will also need to be strengthened with a sub layer made from hardcore sub-base compacted prior to both options.

Types of paving

We supply two types of paving, calibrated and variable thickness. Our variable paving is carefully selected with a tolerance that’s between 18-20mm thickness. For best results we recommend our paving to be laid on sharp sand and cement mix pre-levelled (screeded)

Bedding Mix

Sharp sand and cement should be used, the mix consists of 5 shovels of sand and one cement well mixed the mixture should be damp but not wet semi dry or moist mix, the exact amount of water should be judged by how damp your sand is prior to mixing care should be taken not to add to much water, your mix should hold together when clinched with no water running out. Working life will depend on the weather conditions if it’s a hot day your mix will go off quickly on a typical British summer day then the mix should last 1-2 hours.

Working with screed

To prepare the screed, it should be spread evenly covering approx. 1-2m2 area each time, with a bed thickness of approx. 50-60mm and ‘screeded’ off with a long straight edge tool working to your levels each time e.g. kerbs or rail points. Each piece should be laid on top of the screed and taped down using a rubber mallet until the screed has compacted, care must be taken and levels should all ways be checked.

Tip: SBR

We also recommend using a slurry primer to increase its adhesive properties (Optional), this is done by using SBR and neat cement 50% each, mix small amounts at each time as this will go off quickly and paint on to the back of piece, care should be taken with the slurry mix if any of this mix should get in contact with the surface of the product then please dilute with water ASAP note that working gloves should also be used.

Flowpoint Rapid Flex

We recommend Flowpoint rapid flex as a jointing product mixed with water to provide easy working grout which is applied using a rubber squeegee to each joint, all drains must be sealed before this product is used. When a skin has formed water is then used to clean the excess off the surface, it’s important that you watch the video before working with this product its essential that a competent person e.g. experienced professional tradesmen should apply.

Flowpoint Rapid Flex, which is a rapid setting cement based grouting compound which is water repellent, unaffected by weather and which enables foot traffic after just 90 minutes.

Cleaning, sealing and aftercare

We highly recommend sealing our natural stone with Fila products for more information on our Fila range please visit our Fila product page.