Installation Guide

INSTALLATION GUIDE

Natural Stone Paving Installation Guide

A step-by-step guide to laying natural stone paving flags & setts — preparation, sub-base, bedding, jointing, sealing and long-term care.

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Before You Begin

This guide walks you through the correct process for installing natural stone paving, so your patio, pathway or driveway lays flat, drains properly and lasts for years. Natural stone is a premium, long-lasting material, but its finish and appearance depend on the quality of the groundwork beneath it — take your time with the early stages.

If you are unsure about any stage, especially excavation depth, drainage falls or working near underground services, we recommend using a qualified landscaper or paving contractor.

Tools & Materials You'll Need

Natural stone paving (flags/setts)
Spirit level & string lines
Sub-base (MOT Type 1 or equivalent)
Rubber mallet
Sharp sand & cement (bedding mix)
Angle grinder (for cutting stone)
Slurry primer (SBR slurry)
Pointing trowel & jointing brush
Jointing compound or mortar
Wheelbarrow, spade & rake
Wacker plate / plate compactor

Looking for the right stone for your project? See the full range, finishes and specifications for each of our natural stone and porcelain collections at eastyorkshirestone.com — our team is also on hand to advise on the right product for your space.

Installation Steps

Plan Your Layout

Mark out the area with string lines and pegs. Decide on your laying pattern and calculate quantities with an allowance of 5–10% for cutting and wastage. Check the direction of falls needed for drainage — a minimum fall of 1:80 (roughly 12.5mm per metre) away from buildings is standard practice.

Excavate the Area

Excavate to a depth that allows for the sub-base, bedding layer and the thickness of the stone itself — typically 150–200mm for pedestrian areas and more for driveways. Remove all roots, debris and soft or organic material, and compact the sub-grade before building up layers.

Lay & Compact the Sub-base

Spread MOT Type 1 (or an approved equivalent) in layers of no more than 100mm, compacting each layer thoroughly with a plate compactor. This forms a stable, load-bearing foundation and is the single most important stage for preventing future movement or sinking.

Prepare the Bedding Layer

Mix a semi-dry bedding mortar (typically a 4:1 sharp sand to cement mix) and lay it in a bed roughly 40–50mm thick. Work in small sections at a time so the mix doesn't dry out before the stone is laid.

Lay the Stone

Apply a slurry primer (SBR slurry) to the back of each stone immediately before bedding — this improves adhesion to the bedding mortar and reduces the risk of debonding later on. Bed each piece into the mortar and tap down gently with a rubber mallet, checking level and fall constantly with a spirit level and string lines. Leave a consistent joint gap (usually 8–15mm depending on the finish) between each stone.

Cut Stones Where Needed

Use an angle grinder fitted with a diamond blade to cut edge pieces and infills to size. Always wear appropriate eye, ear and dust protection, and dry-lay cut pieces first to confirm the fit before bedding them.

Point the Joints

Once the bedding has firmed up (usually after 24–48 hours), fill the joints with a jointing compound or a stiff mortar mix, pressing it fully into each gap and striking it off level with the surface. Brush away excess before it cures and clean the surface of the stone as you go.

Allow to Cure

Keep the newly paved area free of foot and vehicle traffic for at least 24–48 hours, and avoid heavy loads for 5–7 days, to allow the bedding and jointing to reach full strength.

Maintenance & Aftercare

Natural stone needs very little upkeep, but a few simple habits will keep it looking its best for years.

General cleaningSweep regularly and wash with warm water and a mild detergent using a stiff outdoor brush. Rinse thoroughly — avoid harsh acidic or bleach-based cleaners on limestone or sandstone, as these can damage the surface.

Algae & mossTreat with a proprietary patio cleaner or a diluted solution formulated for natural stone, and rinse well. In shaded, damp areas a periodic re-treatment may be needed.

StainsBlot spills as soon as possible rather than rubbing them in. For oil or organic stains, a poultice or stone-safe degreaser works best — always test on an offcut or hidden area first.

Rust marksRust marks (often from garden furniture) can usually be lifted with a specialist rust-stain remover made for natural stone; avoid generic wire wool or metal scrapers.

Re-sanding jointsCheck jointing periodically, especially after frost, and top up any joints that have washed out or eroded to keep the surface stable and weed-free.

Sealing Your Paving (Optional)

Sealing is optional but recommended for porous stones such as sandstone and limestone. A good quality impregnating sealer helps resist staining, reduces water absorption and can enhance the natural colour of the stone. Apply only once the paving is fully cured and completely dry, following the manufacturer's instructions, and reapply every 2–3 years or as recommended.

Standards & Good Practice

For larger or trafficked areas, installation should follow the guidance set out in BS 7533 (the British Standard for the construction of pavements using clay, natural stone or concrete pavers). If in doubt on drainage falls, sub-base depths for vehicular loading, or installation near boundaries and services, consult a qualified contractor.

Need help choosing a laying pattern or stone? Get in touch with the East Yorkshire Stone team — we're happy to advise on the right product and pattern for your project.

IMPORTANT GUIDANCE

This guide is general information, not a site-specific specification or a substitute for professional advice. The installer must assess ground conditions, drainage and product suitability, and follow current manufacturer instructions and applicable requirements. Driveways and other heavily loaded areas need a suitable design.

The laying patterns and sequences shown in this guide are general reference only — the exact coursing, cutting layout and pattern should be set out and confirmed on site before any stone is cut.
Unless specifically ordered as calibrated, our natural stone (including driveway stone) is supplied non-calibrated, with natural variation in thickness between pieces — this must be allowed for in the bedding depth during installation.

We cannot accept responsibility for damage caused by incorrect installation, unsuitable site preparation or failure to follow product instructions. Nothing in this notice excludes liability that cannot lawfully be excluded or affects your statutory rights.

Ready to start your project? Browse our full collection or download the guide to keep with you on site.

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