Grey Indian Sandstone: Complete UK Colour & Finish Guide

Sitaram Mangal
2026-03-27T13:05:42+00:00

Grey Indian sandstone—particularly Kandla Grey—dominates UK gardens by combining contemporary grey aesthetics with authentic natural stone character. Unlike manufactured grey porcelain's clinical uniformity, Kandla Grey delivers natural colour variation, visible grain structure, and unique tonal shifts on each slab. Available in three finishes: riven (traditional rustic £21/m²), smooth (contemporary refined £26/m²), and textured anti-slip (enhanced grip £27/m²). Competes directly with grey porcelain but offers natural stone authenticity, develops gentle patina over time, and suits both modern new-builds and traditional properties. 25+ year lifespan with quarterly maintenance. The material British landscapers specify for "grey paving without manufactured perfection."

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Grey paving has dominated UK gardens for the past decade, and there's no sign of that changing. Drive through any new-build estate, browse Instagram garden transformations, or flip through landscaping magazines—grey is everywhere. But not all grey paving is created equal.

Grey Indian sandstone—particularly Kandla Grey—offers something manufactured grey porcelain can't match: natural stone character with authentic colour variation, unique texture patterns, and that indefinable quality that makes each installation genuinely one-of-a-kind. It's the material of choice for homeowners who want contemporary grey aesthetics without the clinical uniformity of man-made products.

This guide covers everything about grey Indian sandstone for UK gardens: what makes Kandla Grey the category leader, the three finish options available (riven, smooth, textured), how it compares to grey porcelain, real UK pricing, and which finish suits your specific project.

At Universal Paving, Kandla Grey sandstone is our best-selling natural stone colour. We stock it in multiple finishes and sizes because we know from experience: when specified correctly, grey Indian sandstone delivers 25+ years of beautiful, low-maintenance outdoor living.

What Is Grey Indian Sandstone?

Indian sandstone is sedimentary rock quarried in Rajasthan, India—the same region that's produced building stone for thousands of years (including materials used in the Taj Mahal). The stone forms from compressed sand deposits over millions of years, creating dense, durable paving material.

Grey Indian sandstone refers specifically to stone with predominantly grey colou palettes rather than warm buffs, greens, or browns. The most popular grey is Kandla Grey, named after the Kandla region where it's primarily quarried.

Kandla Grey Characteristics:

Colour: Cool silver-grey to mid-grey with subtle blue undertones. Not uniform—natural variation creates tonal shifts across and within individual slabs. Some pieces lean lighter (almost silver), others show deeper charcoal tones. This variation is the hallmark of authentic natural stone.

Mineral composition: Quartz, feldspar, and mica create the grey palette. Trace minerals sometimes create faint golden or russet veining—these accent lines add character rather than detract from the grey aesthetic.

Texture: Depends on finish (covered below), but all Kandla Grey sandstone has visible grain structure from original sand particles. This gives tactile depth that manufactured products can't replicate.

Density: 2,200-2,400 kg/m³—dense enough for frost resistance and durability, porous enough to allow moisture movement (preventing freeze-thaw damage).

The Three Finishes: Riven, Smooth, Textured

Kandla Grey sandstone is available in three distinct surface finishes. Understanding these differences is crucial to choosing correctly.

1. Riven (Natural Split) - £20.99-21.85/m²

What it is: Natural cleft surface created by splitting stone along its grain. Each slab hand-dressed with chisel and hammer, creating traditional rustic texture.

Appearance:

Uneven surface with peaks and valleys

Natural texture variations

Hand-dressed edges (slightly irregular)

Traditional, organic aesthetic

Every slab genuinely unique

Thickness: 22mm calibrated (consistently 21-23mm across all slabs)

Best for:

Traditional garden styles

Period properties (Victorian, Edwardian)

Cottage gardens

Rustic, natural aesthetics

Gardens with dense planting

Pricing:

900x600mm slabs: £21.85/m²

Patio pack (mixed sizes): £20.99/m²

600x600mm slabs: £21.81/m²

Pros: Authentic natural stone character, hides minor installation imperfections, excellent grip when wet, lower cost than smooth

Cons: Furniture can rock on uneven texture, harder to clean deep valleys, less contemporary aesthetic

2. Smooth (Sawn & Honed) - £25.27-27.48/m²

What it is: Stone precision-cut with diamond saws, then machine-honed to create refined smooth finish. Edges perfectly straight, surface elegantly smooth but retaining subtle texture.

Appearance:

Refined, contemporary finish

Straight sawn edges (perfect 90° angles)

Smooth surface with slight sheen

Geometric precision

Modern, architectural aesthetic

Thickness: 20mm calibrated (consistently 19-21mm)

Best for:

Modern new-build properties

Contemporary garden designs

Minimalist aesthetics

Areas with outdoor furniture

Barefoot comfort priority

Pricing:

900x600mm slabs: £26.79/m²

Patio pack (mixed sizes): £25.27/m²

1200x600mm slabs: £27.48/m²

600x600mm slabs: £26.08/m²

Pros: Contemporary appearance, furniture sits stable, barefoot comfortable, easier cleaning, calibrated thickness simplifies installation

Cons: Higher cost than riven, shows installation imperfections more readily, requires quarterly cleaning to maintain grip

3. Textured Anti-Slip (Shot Blasted) - £26.79/m²

What it is: Stone surface treated with high-pressure abrasive blasting to create uniform enhanced-grip texture. Sits between smooth and riven for safety-focused applications.

Appearance:

Controlled uniform texture

Enhanced slip resistance

Contemporary but textured

Engineered safety surface

Consistent across all slabs

Thickness: 20mm calibrated

Best for:

Pool surrounds

Sloped patios

North-facing damp areas

Elderly or mobility-impaired users

Safety-priority applications

Pricing:

900x600mm slabs: £26.79/m²

Pros: Maximum wet grip, uniform texture, contemporary appearance, permanent safety enhancement, suitable for challenging applications

Cons: Less comfortable barefoot than smooth, premium pricing, more aggressive texture than some prefer aesthetically

Grey Indian Sandstone vs Grey Porcelain: The Honest Comparison

Both deliver grey paving, but they're fundamentally different materials.

Appearance:

Kandla Grey Sandstone:

Natural colour variation (light to dark across slabs)

Visible grain structure and mineral patterns

Unique tonal shifts on each piece

Develops gentle patina over time

Organic, authentic aesthetic

Grey Porcelain (Kandla Grey lookalike):

Manufactured consistency (every slab identical)

Printed pattern mimics stone

Uniform colour throughout

Colour stable indefinitely (no patina)

Contemporary, precise aesthetic

Winner: Subjective. Sandstone for natural character, porcelain for uniformity.

Durability:

Kandla Grey Sandstone:

25+ year lifespan

Frost-resistant (porous allows moisture movement)

Develops patina (enhances character)

Slight colour variation over time

Natural stone performance

Grey Porcelain:

25+ year lifespan

Frost-proof (vitrified surface)

Zero colour change (permanent finish)

Stain-resistant (non-porous)

Engineered performance

Winner: Tie. Both deliver 25+ years with proper installation.

Maintenance:

Kandla Grey Sandstone:

Quarterly cleaning recommended

Pressure wash annually

Accepts algae/moss in damp areas (needs cleaning)

Sealing optional (not required)

Natural material behaviour

Grey Porcelain:

Minimal maintenance (wipe clean)

Algae growth slower (non-porous)

Never needs sealing

Easier long-term upkeep

Manufactured advantage

Winner: Porcelain (easier maintenance)

Pricing (25m² Patio):

Kandla Grey Sandstone:

Riven 900x600: £546

Smooth 900x600: £670

Includes natural stone authenticity

Grey Porcelain:

Kandla Grey lookalike 900x600: £477

More affordable upfront

But zero natural stone character

Winner: Porcelain cheaper, sandstone better value for natural stone buyers

The Verdict:

Choose Kandla Grey sandstone if you want natural stone character, authentic variation, and organic aesthetics. Choose grey porcelain if you want manufactured consistency, minimal maintenance, and lower cost.

They're different products for different buyers. Neither is objectively "better."

Design Applications: Where Grey Indian Sandstone Works Brilliantly

Grey sandstone's neutral palette suits virtually any UK garden style when specified correctly.

Modern New-Build Gardens

Smooth Kandla Grey complements contemporary architecture perfectly. Clean lines, geometric precision, architectural finish—matches modern properties without clashing.

Combination idea: Smooth Kandla Grey 900x600 main patio + Kandla Grey porcelain setts 200x100 for borders. Natural stone authenticity with contemporary precision.

Traditional Period Properties

Riven Kandla Grey softens the contemporary grey colour with rustic texture, making it suitable for Victorian/Edwardian properties where plain grey might feel too modern.

Combination idea: Riven Kandla Grey patio pack (mixed sizes) creates traditional random pattern with modern grey palette.

North-Facing Gardens

Grey paving in north-facing gardens could feel cold. Kandla Grey's subtle warm mineral tones prevent this—the stone reads cool-neutral rather than stark grey.

Recommendation: Lighter Kandla Grey slabs for north-facing (select from batch during installation). Darker pieces better for sun-exposed areas.

Minimalist Contemporary

Smooth Kandla Grey 1200x600 creates bold, clean expanses with minimal joints. Large format suits minimalist aesthetics perfectly.

Combination idea: Single-size smooth 1200x600 installation with 10mm joints, dark grey grouting for crisp modern finish.

Cottage Gardens

Grey in cottage gardens? Works when using riven finish. The rustic texture fits cottage aesthetic, grey colour provides neutral backdrop for colourful planting.

Combination idea: Riven Kandla Grey pathways through dense planting—stone recedes visually, plants dominate.

Choosing the Right Finish for Your Project

Choose Riven Kandla Grey if:

✅ Traditional or period property

✅ Cottage garden or rustic style

✅ Budget-conscious (lowest price)

✅ Dense planting around patio

✅ Natural, organic aesthetic preferred

✅ Furniture wobbling not a concern

Choose Smooth Kandla Grey if:

✅ Modern new-build or contemporary property

✅ Minimalist or architectural garden

✅ Outdoor furniture dining/lounge area

✅ Barefoot use important

✅ Clean, refined aesthetic preferred

✅ Willing to pay premium for contemporary finish

Choose Textured Kandla Grey if:

✅ Pool surround or constant wet area

✅ Sloped patio (gradient over 1:60)

✅ Elderly relatives or mobility concerns

✅ North-facing damp location

✅ Safety absolute priority

✅ Maximum grip required

Installation & Maintenance: What to Expect

Installation:

All Kandla Grey finishes install on 40-50mm mortar bed (4:1 sharp sand to cement) over 100mm compacted MOT Type 1 sub-base. No priming required (unlike porcelain)—sandstone's porous nature bonds naturally to mortar.

Professional installation: £20-28/m² labour
DIY-friendly: Yes, if you have paving experience
Cutting: Wet diamond blade saw required

Maintenance:

Riven finish:

Sweep weekly to remove debris from texture valleys

Pressure wash annually (medium pressure, 45° angle)

Scrub with stiff brush and paving cleaner quarterly

Moss/algae growth likely in damp areas (clean as needed)

Smooth finish:

Sweep weekly (debris sits on surface, easy removal)

Pressure wash annually

Scrub quarterly to prevent biofilm buildup

Maintain slip resistance through regular cleaning

Textured finish:

Similar to smooth (easier than riven)

Texture aids drainage and cleaning

Quarterly maintenance adequate

Sealing: Optional, not required. Some homeowners seal to enhance colour or reduce staining. Not necessary for longevity.

Real UK Pricing: What You'll Actually Pay

For typical 25m² patio (including delivery, excluding installation):

Kandla Grey Riven:

Patio pack: £525 (£20.99/m²)

900x600 single size: £546 (£21.85/m²)

Kandla Grey Smooth:

Patio pack: £632 (£25.27/m²)

900x600 single size: £670 (£26.79/m²)

1200x600 large format: £687 (£27.48/m²)

Kandla Grey Textured:

900x600: £670 (£26.79/m²)

Add professional installation: £500-700 (£20-28/m² labour)

Total project cost range: £1,025-1,387 for complete 25m² patio

The Verdict: Why Kandla Grey Dominates UK Gardens

Grey Indian sandstone—specifically Kandla Grey—succeeds because it delivers contemporary grey aesthetics with authentic natural stone character. It's the sweet spot between warm traditional sandstones (Raj Green, Rippon Buff) and cold manufactured porcelain.

You get:

Modern grey palette that suits 2020s UK garden trends

Natural stone variation (no two installations identical)

Three finish options for different styles and budgets

25+ year lifespan with minimal maintenance

Authentic material that develops character over time

You avoid:

Clinical uniformity of manufactured products

Dated warm-toned sandstones

Premium pricing of imported European stone

High-maintenance natural materials

Kandla Grey sandstone is the material British landscapers specify when clients say "we want grey paving" but don't want porcelain's manufactured perfection.

Browse Universal Paving's Kandla Grey sandstone range:

Riven finish: Traditional texture, £20.99-21.85/m²

Smooth finish: Contemporary refined, £25.27-27.48/m²

Textured finish: Enhanced grip, £26.79/m²

All sizes: 600x600, 900x600, 1200x600, patio packs

Complementary grey products:

Kandla Grey setts 200x100mm: £40-40.55/m² (borders, edging)

Kandla Grey porcelain 900x600mm: £19.09/m² (mixed material option)

Samples available: £5, delivered 5-7 days

Need advice on finish selection?

Phone: 07480 959706

Free UK delivery on all paving orders

Monday-Friday 8am-5:30pm, Saturday 9am-3pm

Grey Indian sandstone delivers what UK homeowners want: contemporary colour, natural authenticity, proven durability. Choose your finish, order with confidence, enjoy for decades.