Grey Slate: Complete Guide
Grey Slate is a split stone with a neutral grey tone, easy to match. It is chosen for modern floors and claddings and for traditional roofs.
History and origin
It is a metamorphic rock derived from ancient clayey shales, which separates into thin, regular slabs. Grey slate has been a common building material for centuries for roofs, floors and windowsills. The lot origin is not documented in the catalogue; Marmi di Carrara provides it on request.
Look and veining
The colour is grey, ranging from medium grey to anthracite, fairly uniform. In split finish the surface shows the typical layered texture; polished or brushed it appears smoother. Slight tone variations and small veins may be visible.
Technical properties (indicative)
| Classification | slate, metamorphic split stone |
|---|---|
| Weight per unit volume | approximately 2,700-2,800 kg/m³ (indicative) |
| Mohs hardness | around 3-4 |
| Water absorption | low |
| Primary use | interior and exterior |
| Acid resistance | moderate, varies with composition |
Recommended uses
Recommended for floors, claddings, stairs, windowsills, roofs and showers. Avoid as a heavily stressed work surface, because it scratches more easily than granite.
Care and maintenance
Hydro‑oil‑repellent impregnation and cleaning with neutral products. A revitalising treatment can darken the colour and give a wet effect, if desired.
Pairings
- walnut wood
- black iron
- light linen textiles
FAQ
Is grey slate slippery?
Split or brushed it offers good grip; polished it is smoother and mainly suited for interiors.
Can I use it for a shower tray?
Yes, it is a frequent choice, with protective treatment and proper slopes.
What is the difference with Black Slate?
The main difference is the tone: grey is lighter and neutral, black is darker and more graphic.
How do I order it?
We supply it on request in tiles, slabs and custom pieces: send us your project for a quote.
Ardesia Grigia: available on request
We supply this stone as blocks, slabs, tiles and custom-made pieces. Tell us size, thickness and quantity: we will send photos of the available slabs and a quote within 24 hours.
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