Kandla Grey Indian Sandstone Paving 900x600x20 MM (33 Slabs, 17.82 SQM)
Kandla Grey Indian Sandstone Paving 900x600x20 MM (33 Slabs, 17.82 SQM)
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Kandla Grey Indian Sandstone Paving 900x600x20mm | 33 Slabs 17.82 SQM Pack
Bring striking architectural symmetry, dependable durability, and refined styling to your outdoor landscape with premium Kandla Grey Indian Sandstone Paving 900x600x20mm. Supplied by Paving and Slabs Ltd, this high-efficiency commercial trade pack contains 33 individual calibrated flagstones calculated to layout exactly 17.82 square metres (17.82 Sqm) when matching standard joint gaps. Selected directly from premium Indian sandstone formations, these rectangular flags present a beautiful multi-tonal mix of silver, soft grey, and subtle charcoal tones that integrate seamlessly with traditional estates and contemporary UK building designs alike.
The 900x600mm configuration stands as the most popular single-size flagstone profile in British landscaping. Its clean dimensions allow for elegant running stretcher bond or grid layouts that visually lengthen open gardens and courtyard environments. Calibrated mechanically to a uniform 20mm depth, these slabs deliver high-strength load bearing for pedestrian patio setups while eliminating layout adjustments required by uneven, uncalibrated stones. Hand-split across its natural cleavage lines, the resulting riven surface provides an organic texture and heavy-duty slip resistance that ensures safe tracking through rain, frost, and snow.
Kandla Grey 17.82 Sqm Pallet Quick Specs
- 33 Slabs Bulk Pack: Perfectly calculated for 17.82 Sqm layouts.
- Rectangular 900x600 Format: Clean, expansive joint aesthetics.
- Uniform 20mm Calibration: Flat bedding for efficient onsite laying.
- High-Grip Riven Surface: Natural anti-slip wet weather performance.
Versatile Design Contexts for Modern Terraces & Garden Paths
The timeless proportions of 900x600mm slabs are highly regarded because they limit visible joint matrices over expansive layouts, offering clean spatial flow. Lay them in horizontal bonds to draw the eye outward from wide bi-fold doors, or trace landscape lines for wide garden pathways. The neutral tone pairings of authentic Kandla Grey blend easily against common red brick, grey render, and modern timber boundaries without creating visual conflict.
To combine this product with alternative design details, view our wider Paving Slabs library or explore specific Patio Slabs and Garden Slabs sections. Compare finishes by exploring our core Indian Sandstone Paving and Porcelain Paving stocks, or view specialized grids in our Pathway Paving and 900x600 Paving Slabs collections. For complete technical instructions, read our official Paving Installation Guide alongside our matching structural Drainage Guide.
Professional Installation Guide & Ongoing Maintenance
For enduring stability, 20mm calibrated sandstone flagstones must be set on a **full, continuous wet mortar bed** (mixed at a 4:1 sand to cement ratio) layered over a well-compacted sub-base containing 100-150mm of MOT Type 1 aggregate. Never rely on loose sand layouts or spot-bedding points, as unsupported voids collect moisture, which triggers surface shifting during harsh winter frost cycles. Grout boundaries securely with an exterior-grade natural stone jointing mortar to actively prevent weed growth.
Ongoing maintenance is quick and easy due to the robust mineral matrix of real Indian sandstone. Periodically sweep loose leaf clutter and wash down annually with a specialized patio cleaner to eliminate seasonal moss or green algae. Avoid using high-pressure sprayers directly along joint lines to prevent compound erosion. Applying a breathable, impregnating sealer after installation preserves the natural grey coloration against weathering and shields the stone from accidental organic stains. Learn additional care methods from our reference posts on how to clean and maintain paving slabs and how to clean and seal Indian sandstone.
Technical Data Matrix
| Product Style | Premium Natural Indian Sandstone Calibrated Garden Flagstones |
| Pallet Quantity | 33 Individual Slabs (Securely Packaged Component Bundle) |
| Project Coverage | 17.82 Square Metres (Sqm) Including 10mm Grout Jointing Gaps |
| Face Dimensions | 900mm x 600mm Large Format Rectangular Profile |
| Thickness Calibration | 20mm (Machine-Ground Flat Base Profile) |
| UK Logistics | Palletised Delivery Fleet Handling All Mainland United Kingdom Postcodes |
Frequently Asked Questions
What does 20mm calibrated mean for Indian sandstone?
Calibrated means each slab has been machine ground on the back to a consistent and uniform thickness of 20mm. Unlike uncalibrated stone where thickness varies between slabs, calibrated slabs sit flat on a consistent mortar bed, making installation faster and the finished surface more level and professional. It is the correct specification for domestic patio installations.
How many slabs do I need for a 17.82 square metre patio?
This pack contains 33 slabs at 900x600mm each, covering exactly 17.82 square metres at standard 10mm joint spacing. For a finished patio footprint around 15 to 16 square metres, ordering this single pallet correctly factors in the standard 10 percent wastage allowance for cuts and edges.
Is Kandla Grey sandstone frost resistant?
Yes. Kandla Grey Indian sandstone is suitable for UK outdoor use including areas subject to regular winter frost. Its relatively low water absorption rate and dense structure resist the freeze-thaw expansion that causes surface spalling in more porous materials. Sealing after installation further reduces moisture absorption and extends frost resistance over the long term.
What is the best way to lay 900x600mm paving slabs?
The most popular laying pattern for 900x600mm slabs is stretcher bond — similar to a brick bond — where each row is offset by half a slab length. This pattern is simple to set out, minimises cuts and produces a clean, contemporary result. Stack bond with fully aligned joints is also used in formal or minimalist designs. Always use a full mortar bed rather than spot bedding for slabs of this size.
Does Kandla Grey sandstone need sealing?
Sealing is strongly recommended. An impregnating breathable sealer applied after installation significantly reduces staining from organic matter, limits moss and algae growth, preserves the stone's colour and makes routine cleaning much easier. It does not change the appearance of the stone. Reapply every two to three years depending on exposure and foot traffic.
Can these slabs be used for a driveway?
These 20mm calibrated slabs are specified for pedestrian patio and pathway use only. Driveway applications require a minimum 40mm slab thickness with a reinforced sub base designed for vehicle loading. See our driveway paving collection for correctly rated products.
How do I clean Kandla Grey sandstone paving?
Regular sweeping and an occasional wash down with clean water and a stiff brush is sufficient for routine maintenance. For moss, algae or organic staining, a proprietary patio cleaner applied with a brush and rinsed off is effective. Avoid using high-pressure washers directly on joints as this damages jointing compound.
What is the difference between Kandla Grey and other Indian sandstone colours?
Kandla Grey is characterised by its cool silver-grey palette with blue undertones — it is one of the cooler, more neutral Indian sandstone options. Other popular variants include Raj Green, which has a warm green-grey tone, Autumn Brown with warm russet and orange tones, and Fossil Mint with a lighter cream-grey appearance. Kandla Grey suits contemporary and traditional gardens equally and is the most versatile colour for pairing with modern architecture and grey brick or render elevations.
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