Black Slate Paving 900 X 600
Black slate paving 900 x 600
Size: 900x600 / 600x600 / 600x300mm, custom sizes available
Thickness: 23-26mm / 18-21mm / 28-31mm
Finished: Polished, honed, natural split
Application: Indoor and outdoor floor, garden paving, landscaping
MOQ: Full container about 27 tons, smaller quantity accepted
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Product Introduction
Irish green marble is a trade name rather than a place: in stone trade usage it covers dark green, pale-veined marbles, and the genuine article is Connemara marble from County Galway in western Ireland, a serpentine-bearing calcsilicate of the Dalradian sequence that was metamorphosed during the Ordovician, roughly 466 to 478 million years ago. The Irish green marble slab sold here is quarried in Fujian Province, China and shipped from our Xiamen works, which is what a buyer comparing it against Galway stock needs to know before ordering a container. Colour is a deep green ground carrying paler green and white veining, and the vein pattern runs in bands through the block, so slabs are cut and dry-laid in sequence to keep a wall or a counter run continuous.
Products Description
| Parameter | Specification |
|---|---|
| Product Name | Black Slate Paving 900 x 600; also quoted as black slate paving slabs, black slate patio slabs or black slate garden tiles; brand YoYo Stone |
| Material and Origin | Black slate, a foliated metamorphic rock split along its bedding planes; blocks taken first-hand from controlled slate quarries and processed at our two plants in Fujian and Hubei |
| Colour and Weathering | Carbonaceous black to charcoal; the exposed face lightens towards grey as it oxidises, and a 900x600 slab lightens more visibly than a small tile |
| Standard Sizes | 900x600, 600x600 and 600x300mm, or any size to your drawing; a 900x600 slab covers 0.54 m2 |
| Thickness Bands | 23 to 26mm, 18 to 21mm and 28 to 31mm, with 15mm on request |
| Calibration and Tolerance | Face size within 2.0mm on calibrated stock; thickness inside 1.5mm of the stated band; uncalibrated split stock is quoted separately |
| Available Finishes | Natural split, honed and polished; a polished face is not specified for external paving because it loses grip when wet |
| Edge and Arris | Natural split edge, hand-dressed, sawn or tumbled on request; the arris is dressed because that is where flaking starts |
| Petrography | A foliated metamorphic rock with a marked bedding cleavage, so the stone is split into flat plates rather than cut from a block |
| Density | 2.70 to 2.85 g/cm3 |
| Water Absorption | 0.10 to 0.40% by mass |
| Compressive Strength | 60 to 150 MPa, tested perpendicular to the cleavage |
| Flexural Strength | 9 to 16 MPa, the governing value for a 900x600 slab on a bed |
| Hardness | Mohs 3.0 to 4.0, so it wears and chips more readily than granite |
| Weight and Handling | About 30 kg per 900x600x20mm slab and 45 kg at 30mm, so two people minimum on a frame |
| Bed and Joint | A full mortar or sand-cement bed with no voids; 8 to 12mm joints on a pedestrian patio, with a wider joint or rigid edge restraint where vehicles cross |
| Fall and Drainage | A minimum fall of 1:80 to a drain or edge; at 900x600 roughly two joints per m2 carry nothing, so the fall does the draining |
| Application | Indoor and outdoor floors, garden paving, patios, paths, pool surrounds and landscaping |
| Packing | Packed in banded, fumigated wooden crates or in carton boxes, with the faces protected |
| MOQ, Payment and Port | Full containers filled to about 27 t for the European market, with smaller quantities accepted on enquiry; 30% by T/T with 70% against the B/L copy, or L/C; Xiamen, China |
Quality Control & Inspection Standards
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Colour band
Black slate is sorted to a tone band before splitting, because a container that mixes a jet piece with a charcoal one will show the difference across a patio once the surface begins to oxidise.
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Calibration
On a 295mm tile a 3mm thickness variation is absorbed by the bedding sand; on a 900x600 slab it becomes a rocker, so the thickness band is gauged piece by piece and wedge-shaped splits are diverted to walling rather than to paving.
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Cleavage integrity
The rock parts along planes that run the full length of the piece, so a slab with a visible open parting plane is pulled before it is packed, and any piece that has already lifted a flake at the edge is diverted.
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Crate, jaw marks
Slabs are stacked face to face in fumigated crates or carton boxes and banded against movement, with the face protected from the crate jaw because a jaw mark on a split black face is not a mark that can be dressed out.
Products Application
Typical Project & Application Scenarios
Garden patios and terraces
Black slate paving 900 x 600 laid on a full bed at a 1:80 fall, with the joint set at 10mm and the slabs taken from one tone band so the patio reads as a single surface.
Garden paths and walkways
Black slate garden tiles at 600x300 or 600x600 for a narrower path, laid with the cleaved face up for grip and the arris dressed where the path meets a lawn edge.
Driveways and vehicle crossings
A thicker 28 to 31mm band on a rigid bed with a wider joint and an edge restraint, specified where a car crosses rather than a foot.
Pool surrounds and wet deck
Natural split black slate paving at 900x600, chosen for the cleaved face because a polished slate surround is a slip risk, with the fall running away from the pool edge.
FAQ
Everything You Want To Know
01. Does black slate paving stay black after it is laid?
02. What thickness and bed does a 900x600 slate paving slab need?
03. Will black slate paving flake or spall in frost?
04. Is natural split black slate paving slippery when wet?
05. How is black slate paving packed, and what fits in a container?
Packed face to face into banded fumigated crates or carton boxes, labelled to the laying schedule. We fill to about 27 tons for European buyers, we mix thickness bands and sizes in one load, and we supply free samples on request.
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