Lay Indian sandstone.

Indian sandstone is by far the most popular natural-stone patio material in UK gardens, and for good reason — warm tones, generous slab sizes, and a price point most homeowners can stretch to. This guide covers what a finished installation actually costs in 2026, what good prep looks like, and the small details that separate a patio that lasts twenty years from one that's loose and stained inside three.

If you're weighing it up against porcelain or limestone, read the comparison sections too. Sandstone has trade-offs — chiefly its porosity — and going in eyes-open is the difference between a patio you love and one you regret.

What Does the Work Involve?

• Site survey, levels, and access check — wheelbarrowing slabs through a narrow side return doubles labour.
• Excavation to about 200 mm and removal of spoil to a skip or grab lorry.
• Compacted MOT Type 1 sub-base (typically 100 mm).
• Full mortar bed — never spot-fix sandstone (the air gaps cause efflorescence and slabs rocking).
• Laying slabs to a 1:80 fall away from the house for drainage.
• Jointing with a brush-in resin compound or traditional mortar pointing.
• Initial clean, optional sealant once fully dry (typically 6 weeks after install).

Typical Costs

Access, edging detail, levels, and slab thickness drive most of the variation. A flat back-garden install with rear-vehicle access can sit at the low end; a sloped front garden with steps and through-house carrying will push you to the top.

How Long Does It Take?

• 10 m² patio: 2–3 days for a two-person crew.
• 20 m² patio: 3–5 days.
• 40 m²+ with steps or curved edges: 6–10 days.
• Allow a further 24–48 hours before walking on the slabs and 7+ days before furniture.

DIY or Professional?

A confident DIYer with strong help can lay a small, flat sandstone patio — the materials and methods are well-documented. But sandstone is unforgiving: slabs are heavy, the full mortar bed is fussy to get level, and the falls are often the part DIYers get wrong (leading to standing water and frost damage). For anything over 12 m², or any patio with steps, a professional usually saves money long-term.

Choosing the Right Tradesperson

• Ask to see two recent sandstone jobs, ideally one over two years old so you can see how the joints have held.
• Confirm they lay on a full mortar bed — not five spots ("dot and dab"), which is the single biggest cause of failed patios.
• Get the fall specified in writing (1:80 minimum, away from the house).
• Ask which jointing product they use — Romex, GftK, EASYJoint are the well-known UK brands.
• Insist on a written guarantee covering settlement and joint failure (5 years is normal).

UK Regulations

• Patios under 5 m² are usually permitted development; larger ones in front gardens may need planning permission, especially if non-permeable.
• If you're paving over 5 m² of front garden and the surface is impermeable, you'll need to provide drainage to a soakaway or permeable border under SuDS rules.
• Properties in conservation areas or listed buildings have stricter rules — check with your council first.

Common Problems

• Efflorescence (white salt staining) — common in the first 6 months, normally clears with rain or a specialist cleaner.
• Slabs rocking — almost always a sign of spot-bedding rather than full mortar.
• Joints cracking — happens when cheap jointing compound is used or sub-base wasn't compacted properly.
• Iron staining (orange spots) — natural mineral content, hard to remove. Buy from a reputable supplier who hand-picks slabs.
• Slippery in winter — sandstone with algae can be lethal. Annual jet-wash and biocide treatment fixes it.

Frequently Asked Questions