Quick Answer
Before buying Indian sandstone, confirm the colour family, surface finish, thickness, calibration, edge type, pack format, waste allowance, installation method, sealing expectations, delivery access, quality standard and supplier background. These details affect the finished patio more than the product name alone.
A good Indian sandstone patio is not created only by choosing a popular colour such as Kandla Grey or Raj Green. It also depends on correct slab selection, realistic natural stone expectations, proper installation and sensible site planning before the first crate arrives.
1. Choose the Right Colour Family
Indian sandstone is naturally varied, so choose the overall colour family rather than expecting every slab to match a small sample. Kandla Grey sandstone gives a neutral contemporary look, Raj Green sandstone feels traditional and settled, Rippon Buff sandstone adds warmth, Autumn Brown sandstone creates a deeper rustic finish, and Indian York sandstone offers a Yorkstone-inspired tone.
The colour should be checked against the house, brickwork, render, fencing, garden size and planting. A sandstone colour that looks attractive in a product photo may feel too dark, too warm or too busy once it is laid across a full patio.
For more detailed colour guidance, read our article on choosing the right Indian sandstone paving colour.
2. Choose Riven or Smooth Finish
Riven sandstone is split along natural bedding planes and has a traditional textured surface. It suits cottages, period properties, relaxed planting and classic patios. This is the familiar Indian sandstone look used in many UK gardens, especially in colours such as Kandla Grey, Raj Green, Rippon Buff, Autumn Brown and Indian York.
Smooth sandstone paving is different. It is sawn and usually honed to create a flatter, cleaner and more refined surface than traditional riven sandstone. It still has the natural mineral character of Indian sandstone, but the finish is more controlled and more contemporary.
Choose riven sandstone if you want traditional garden character, natural surface texture and a more rustic British patio feel. Choose smooth sandstone if you want a cleaner sawn edge, a flatter honed face and a more modern natural stone finish. Smooth sandstone may show marks more readily than a riven surface, so sealing is more often considered, especially on lighter colours or outdoor dining areas.
3. Check Thickness and Calibration
Thickness matters because it affects laying tolerance, mortar bed adjustment, finished patio level and the transition between doors, paths, lawns and existing hard surfaces. Many classic riven Indian sandstone patio slabs are supplied at around a nominal 22 mm calibrated thickness, while some smooth sawn options are around 20 mm. Always check the individual product details before ordering.
Calibrated sandstone means the slab has been processed to create a more consistent thickness. It does not make sandstone identical to porcelain, but it helps installers achieve a more controlled finished level than very irregular hand-split stone.
For the customer, calibration can make laying more predictable, reduce unnecessary adjustment and help produce a cleaner patio surface. For the installer, it helps with mortar bed planning, step-down height, falls away from the house and the final relationship between the paving and surrounding levels.
4. Check Edge Type
Edge type affects both the appearance and the laying style. Traditional riven sandstone often has hand-dressed or fettled edges, giving the paving a more natural and rustic character. Sawn sandstone normally has straighter machine-cut edges, creating a cleaner and more contemporary joint line.
Customers wanting an old garden or cottage-style patio usually prefer the softer character of riven hand-dressed edges. Customers wanting a crisp modern layout may prefer sawn edges, especially with larger slab formats and narrower, more controlled joints.
5. Choose the Right Pack Format
The size and format of the paving changes the finished look. Sandstone paving 900 x 600 is often chosen for cleaner large-format layouts, while sandstone paving 600 x 600 gives a more regular square layout. Indian sandstone patio packs are better suited to a traditional mixed-size flagstone pattern.
For borders, paths, edging details and small feature areas, sandstone cobbles and setts can be used alongside the main paving slabs.
| Format | Best for | Visual effect |
|---|---|---|
| 900 x 600 slabs | Cleaner modern layouts | Strong lines and larger format |
| 600 x 600 slabs | Balanced grid layouts and smaller spaces | Regular and controlled |
| Patio packs | Traditional garden patterns | Mixed-size, informal and classic |
| Smooth sandstone paving | Cleaner patios, dining areas and contemporary gardens | Flatter, sawn and honed natural stone finish |
| Setts and cobbles | Edges, paths, thresholds and detailing | Textured and decorative |
6. Allow for Waste, Cuts and Selection
Most patio projects need extra material for cuts, breakages, colour selection and pattern control. Natural stone also benefits from blending slabs from different parts of the pack during installation. Ordering too tightly can leave the installer with fewer options and a less balanced result.
As a general rule, many projects allow around 10% extra for cuts, trimming and reasonable selection. More may be needed for diagonal layouts, curved edges, complex steps, narrow paths, awkward shapes or projects where the installer needs more choice when blending natural variation.
It is better to calculate the quantity carefully before ordering than to run short near the end of the job. A second order may come from a different batch, and natural sandstone from a later delivery may not match the first order exactly.
7. Ask Installation Questions Before Ordering
Indian sandstone should be bought with the installation method in mind. A good slab can still perform poorly if it is laid on a weak base, spot-bedded, laid without proper fall or jointed incorrectly.
- Will the installer use a full mortar bed?
- Will a suitable slurry primer be used where required?
- Are falls planned away from buildings?
- Will slabs be blended before laying?
- What jointing method will be used?
- Is the project a patio, path or driveway?
- Has the finished level been checked against doors, drains, steps and existing paving?
These questions matter more for natural sandstone than for some manufactured paving because sandstone has natural surface texture, colour movement and thickness tolerance. The installer should understand that Indian sandstone is a natural paving material, not a factory-identical outdoor tile.
8. Decide on Sealing Expectations
Sealing is optional for many riven sandstone patios, but it can help in shaded areas, dining spaces, smooth sandstone installations and lighter-coloured stones. If the customer wants the stone to resist staining more easily, sealing should be discussed before the patio is laid.
A sealer may change the appearance of sandstone, often making the colour appear deeper or slightly richer. It should always be tested first on a spare slab or small hidden area. This is especially important with Kandla Grey, Rippon Buff, Mint Fossil and smooth sandstone finishes.
For more guidance, read our article on whether it is worth sealing Indian sandstone.
9. Confirm Delivery Access and Site Preparation
Indian sandstone is heavy and is normally delivered on pallets or crates. Check access for pallet delivery, kerbs, gravel drives, slopes, narrow roads, overhanging trees, parked cars and storage space before ordering. Delivery planning is part of a successful paving project.
Before delivery, customers should make sure there is a safe place to leave the pallets. The delivery point should be firm, level and accessible for a tail-lift vehicle and pallet truck where applicable. Loose gravel, soft ground, steep slopes and tight turns can all create problems.
Delivery issues are easier to prevent than to solve on the day. If the access is difficult, it should be discussed before ordering rather than after the vehicle arrives.
10. Check Quality Standards and Ethical Sourcing
Customers should buy Indian sandstone from a supplier that understands the material, not only from a seller listing colour names online. Important checks include product thickness, calibration, finish type, pack format, natural variation guidance, delivery method and whether the supplier has a serious supply chain behind the product.
For external paving, British Standards such as BS 7533 are often referred to in relation to pavement construction, laying practice and product performance expectations. Customers should ask whether the supplier can provide appropriate product information, test data or quality guidance for the paving being sold.
Ethical sourcing is also important. Indian sandstone is a natural material produced through quarrying, splitting, cutting, dressing, calibration, sorting and packing. A responsible supplier should understand where the stone comes from and should work with established production partners rather than treating sandstone as an anonymous commodity.
Paving Slabs UK works with long-term supply chain partners and imports Indian sandstone with practical knowledge of quarry selection, production, packing and UK distribution. This helps us give customers more realistic advice on colour variation, quality expectations and suitable use.
What to Tell Your Installer Before Laying Begins
Before laying starts, the customer and installer should agree how the sandstone will be checked, sorted and blended. This is especially important for natural stone because the final patio should be judged as a balanced surface, not as separate individual slabs.
Ask the installer to open more than one pack before laying, mix light and dark slabs across the area, check the laying pattern, inspect pieces before fixing them permanently and set aside any slabs needed for cuts or edge details.
The installer should also confirm the full mortar bed, fall direction, joint width, jointing product, drainage, finished height and whether any sealing will be applied after installation. Once the slabs are fixed, changing the colour layout or pattern becomes difficult and expensive.
Price Expectations Before You Buy
Price should be considered, but it should not be judged only by the lowest square metre figure. Thickness, calibration, colour sorting, crate quality, delivery cost, VAT, pack format and supplier reliability all affect the real value of Indian sandstone.
A very cheap sandstone offer may not be good value if the slabs are poorly sorted, difficult to lay, inconsistent in thickness or expensive to deliver. A fair comparison should include product specification, delivery and the amount of usable material needed for the project.
For more detail, compare realistic pricing in our Indian sandstone paving cost per square metre guide.
Clear Recommendation
Buy Indian sandstone as a complete patio system, not just as a colour. The best results come from matching stone quality, pack format, installation method, delivery planning and maintenance expectations before the first crate arrives.
A customer who confirms the colour, finish, thickness, pack format, waste allowance, installation method, sealing expectation and delivery access before ordering is far more likely to achieve a patio that looks balanced, performs properly and suits the property for many years.
Indian Sandstone Buying Checklist: Frequently Asked Questions
What thickness should Indian sandstone be for a patio?
Many riven Indian sandstone patio slabs are supplied at around a nominal 22 mm calibrated thickness, although the exact thickness depends on the product. Thickness matters because it affects laying tolerance, mortar bed adjustment, finished levels and the transition between the patio and surrounding areas.
How much extra sandstone should I order for cuts and waste?
Many patio projects allow around 10% extra for cuts, trimming, breakages and natural stone selection. More may be needed for complex layouts, curves, diagonal patterns, steps or projects where the installer needs more slabs for blending and selection.
What is the difference between calibrated and uncalibrated Indian sandstone?
Calibrated Indian sandstone has been processed to create a more consistent slab thickness. Uncalibrated sandstone can vary more in thickness and usually requires more adjustment during laying. Calibrated paving is generally easier for patio installation because it helps the installer control the finished level more accurately.
What does riven mean on a sandstone paving slab?
Riven means the sandstone has been split along its natural bedding planes, creating a textured surface. This is the traditional Indian sandstone finish used on many UK patios. The surface may show ridges, dips, mineral lines and natural movement because it is formed by the stone's own layered structure.
Do I need to tell my installer anything special about Indian sandstone before laying starts?
Yes. Ask the installer to open and blend slabs from several packs, check the laying pattern before fixing, use a full mortar bed, plan proper falls and confirm the jointing method. Natural sandstone should not normally be laid one crate at a time without checking the overall colour spread.
Is Indian sandstone ethically sourced?
Indian sandstone can be responsibly sourced when it comes through established suppliers with proper supply chain relationships and quality control. Customers should choose suppliers who understand the quarrying, production, sorting and export process rather than treating sandstone as an anonymous low-cost product.
What British Standard applies to Indian sandstone paving?
British Standards such as BS 7533 are commonly referenced for external paving construction, installation practice and performance expectations. Customers should ask their supplier for relevant product information and should ensure the paving is installed using a suitable method for external patio use.
