Honed Black Slate Hearth – Standard Rectangle Cut to Size
Honed Black Slate Hearth – Standard Rectangle Cut to Size - 30mm / Up to - 90cm x 60cm - (XS) is backordered and will ship as soon as it is back in stock.
Express Honed Black Slate Hearths
Our Express Black Honed Slate Hearths are produced for those that need a slate hearth fast, delivered in as little as 3 working days, making them the ideal choice for quick turnarounds, last-minute installations or when another supplier has let you down.
Each hearth is cut to your requested dimensions using our high-precision CAD machinery, ensuring accuracy and a clean, professional finish.
These Honed Black Slate Hearth are produced using premium natural slate with a smooth honed finish. Every piece is supplied unsealed with clean sawn edges, ready for you to seal, finish or trim as required on site.
To fully understand the material and its natural characteristics, please refer to the Specification tab, where all technical details and natural tolerances are listed clearly.
Easy Ordering Process
- ✓ Select the base size closest to your required dimensions from the dropdown
- ✓ Enter your cut-to-size measurements — we’ll handle the rest
Key Features
- ✓ Square or rectangular only for fast processing
- ✓ Precision cut to your requested size
- ✓ Clean sawn edges – supplied unsealed
- ✓ Fast 3-day delivery across the UK
- ✓ No hidden costs or delays
- ✓ Ideal for on-site trimming or DIY fitting
If you require a more complex shape, angled cuts or a detailed edge profile, explore our Bespoke Cut-to-Size Slate Hearth options.
| Product Specifications | |
|---|---|
| General | |
| Product Name | Brazilian Black Slate – Honed Hearth Grade |
| Material Type | Natural slate |
| Category | Fire hearth slab / fireplace stone |
| Country of Origin | Brazil |
| Thickness Options | 30 mm |
| Colour Description | Blue-black base tone, Subtle graphite and charcoal movement deepens further when sealed. |
| Surface Finish | Machine-honed, smooth and flat surface with a soft low-sheen finish. |
| Natural Variation | Low–medium variation in tone and mineral movement; honing reduces surface texture but natural character remains visible. |
| Edge Finishing Notes | All edges are machine-cut and hand-sanded. Small sanding marks or slight tonal variation along the edge may be visible. |
| Weight | Approx. 70–140 kg per m² depending on thickness. |
| Density | Approx. 2,800–2,900 kg per m³. |
| Technical Characteristics | |
| Heat Absorption / Retention | Excellent thermal mass — absorbs heat and releases it slowly. |
| Max Temperature Resistance | Approx. 450–500 °C. Must not contact open flame. |
| Compressive Strength | Approx. 100–150 MPa. |
| Flexural Strength | Approx. 15–25 MPa. |
| Porosity | Low–medium; honed surfaces may mark more easily if unsealed. |
| Water Absorption | Approx. 0.3–1.0%. |
| Thermal Conductivity | Approx. 2.0–2.5 W/mK. |
| Chemical Sensitivity | Resistant to weak acids; strong acids may lighten honed surfaces. |
| Stain Resistance | Moderate, sealing is strongly recommended. |
| Salt Sensitivity | Low. |
| Natural Characteristics | |
| General Nature | Brazilian black slate is a natural metamorphic stone originally formed in layers. For honed hearths, the surface is mechanically ground to create a flatter, smoother finish. Honing reduces relief but does not remove the natural tonal and mineral movement. |
| Colour Profile | Slate labelled “black” is actually a blue-black shade rather than a pure deep black. Graphite, charcoal and soft tonal variations are common. When sealed, the colour deepens to a richer uniform tone. |
| Mineral Movement | Natural mineral distribution may produce cloudy areas, soft streaks, lighter/darker patches or subtle veining. These features are inherent to the stone and ensure every piece is unique. |
| Honed Surface Features | The honing process may result in faint tooling lines, micro-pits, small filled areas or slight sheen differences. These characteristics are normal and typical of honed natural stone. |
| Pyrite / Fools Gold | Occasional tiny metallic gold or bronze pyrite flecks may appear naturally within the stone or on cut edges. These are natural inclusions and not defects. |
| Production Enhancements | Enhancements may include epoxy fillers, localised smoothing, edge refinement or colour-enhancing treatments. These are standard practices for honed natural stone. |
| Application & Packaging | |
| Suitable For | Fire hearths, stove bases, inglenooks, chamber floors. |
| Application | Internal use only. |
| Sealing | Strongly recommended to deepen colour and reduce marking. |
| Installation Notes | Install on a stable, level substrate. Keep away from direct flame. |
| Packaging | Supplied on wooden pallets/crates with protective layers. |
| Availability | Cut-to-size: 30 mm. |
FAST UK DELIVERY — PRICED FAIRLY AND TRANSPARENTLY
We believe delivery should be clear, honest, and consistent. That’s why we don’t advertise “free delivery” while quietly building the cost into product prices or adding unexpected surcharges later in the checkout.
Instead, we charge delivery separately and transparently, so you can see exactly what you’re paying for, and so customers who order smaller quantities aren’t unfairly subsidising larger deliveries.
We deliver across the UK, including the Scottish Highlands & Isles, Northern Ireland, the Channel Islands, the Isle of Wight and the Isle of Man.
WHY WE DON’T OFFER “FREE DELIVERY”
There’s no such thing as truly free delivery — the cost has to be covered somewhere. Some retailers do this by:
- Increasing product prices to absorb delivery costs, or
- Adding extra charges at checkout (often based on delivery size/weight or certain postcodes)
Our approach is simple:
- Product prices stay product prices.
- Delivery is shown clearly and charged based on what it actually costs to send your order safely and on time.
DELIVERY CALCULATIONS
Delivery is calculated based on factors such as:
- Order size and weight
- The type of goods being shipped
- Delivery method (parcel, courier, pallet)
- Delivery location within the UK
You’ll always see the delivery cost clearly before you pay — simply enter your postcode at checkout and your delivery options will appear.
DISPATCH & DELIVERY TIMES
We aim to dispatch orders as quickly as possible, usually within 1–2 working days (subject to stock and order volume).
Delivery times vary depending on your location and the delivery method selected.
If your order is urgent, please contact us and we’ll do our best to help.
COLLECTION FROM OUR PETERBOROUGH DEPOT (PRIMETHORPE PAVING)
Collection is available from our Peterborough depot at Primethorpe Paving, Bungalow Business Park, PE6 7PP.
Please select the collection option at checkout (where available) or contact us to arrange a suitable time.
TRACKING & DELIVERY UPDATES
Where available, we’ll provide tracking details once your order has been dispatched.
ACCESS & DELIVERY RESTRICTIONS
To ensure a smooth delivery, please check:
- Access for large vehicles (if your order ships by pallet)
- That someone is available to receive the delivery
- Any site restrictions (narrow lanes, height limits, timed access, etc.)
If you’re unsure about anything, contact us before ordering, we’re happy to advise.
Express Honed Black Slate Hearths
Our Express Black Honed Slate Hearths are produced for those that need a slate hearth fast, delivered in as little as 3 working days, making them the ideal choice for quick turnarounds, last-minute installations or when another supplier has let you down.
Each hearth is cut to your requested dimensions using our high-precision CAD machinery, ensuring accuracy and a clean, professional finish.
These Honed Black Slate Hearth are produced using premium natural slate with a smooth honed finish. Every piece is supplied unsealed with clean sawn edges, ready for you to seal, finish or trim as required on site.
To fully understand the material and its natural characteristics, please refer to the Specification tab, where all technical details and natural tolerances are listed clearly.
Easy Ordering Process
- ✓ Select the base size closest to your required dimensions from the dropdown
- ✓ Enter your cut-to-size measurements — we’ll handle the rest
Key Features
- ✓ Square or rectangular only for fast processing
- ✓ Precision cut to your requested size
- ✓ Clean sawn edges – supplied unsealed
- ✓ Fast 3-day delivery across the UK
- ✓ No hidden costs or delays
- ✓ Ideal for on-site trimming or DIY fitting
If you require a more complex shape, angled cuts or a detailed edge profile, explore our Bespoke Cut-to-Size Slate Hearth options.
| Product Specifications | |
|---|---|
| General | |
| Product Name | Brazilian Black Slate – Honed Hearth Grade |
| Material Type | Natural slate |
| Category | Fire hearth slab / fireplace stone |
| Country of Origin | Brazil |
| Thickness Options | 30 mm |
| Colour Description | Blue-black base tone, Subtle graphite and charcoal movement deepens further when sealed. |
| Surface Finish | Machine-honed, smooth and flat surface with a soft low-sheen finish. |
| Natural Variation | Low–medium variation in tone and mineral movement; honing reduces surface texture but natural character remains visible. |
| Edge Finishing Notes | All edges are machine-cut and hand-sanded. Small sanding marks or slight tonal variation along the edge may be visible. |
| Weight | Approx. 70–140 kg per m² depending on thickness. |
| Density | Approx. 2,800–2,900 kg per m³. |
| Technical Characteristics | |
| Heat Absorption / Retention | Excellent thermal mass — absorbs heat and releases it slowly. |
| Max Temperature Resistance | Approx. 450–500 °C. Must not contact open flame. |
| Compressive Strength | Approx. 100–150 MPa. |
| Flexural Strength | Approx. 15–25 MPa. |
| Porosity | Low–medium; honed surfaces may mark more easily if unsealed. |
| Water Absorption | Approx. 0.3–1.0%. |
| Thermal Conductivity | Approx. 2.0–2.5 W/mK. |
| Chemical Sensitivity | Resistant to weak acids; strong acids may lighten honed surfaces. |
| Stain Resistance | Moderate, sealing is strongly recommended. |
| Salt Sensitivity | Low. |
| Natural Characteristics | |
| General Nature | Brazilian black slate is a natural metamorphic stone originally formed in layers. For honed hearths, the surface is mechanically ground to create a flatter, smoother finish. Honing reduces relief but does not remove the natural tonal and mineral movement. |
| Colour Profile | Slate labelled “black” is actually a blue-black shade rather than a pure deep black. Graphite, charcoal and soft tonal variations are common. When sealed, the colour deepens to a richer uniform tone. |
| Mineral Movement | Natural mineral distribution may produce cloudy areas, soft streaks, lighter/darker patches or subtle veining. These features are inherent to the stone and ensure every piece is unique. |
| Honed Surface Features | The honing process may result in faint tooling lines, micro-pits, small filled areas or slight sheen differences. These characteristics are normal and typical of honed natural stone. |
| Pyrite / Fools Gold | Occasional tiny metallic gold or bronze pyrite flecks may appear naturally within the stone or on cut edges. These are natural inclusions and not defects. |
| Production Enhancements | Enhancements may include epoxy fillers, localised smoothing, edge refinement or colour-enhancing treatments. These are standard practices for honed natural stone. |
| Application & Packaging | |
| Suitable For | Fire hearths, stove bases, inglenooks, chamber floors. |
| Application | Internal use only. |
| Sealing | Strongly recommended to deepen colour and reduce marking. |
| Installation Notes | Install on a stable, level substrate. Keep away from direct flame. |
| Packaging | Supplied on wooden pallets/crates with protective layers. |
| Availability | Cut-to-size: 30 mm. |
FAST UK DELIVERY — PRICED FAIRLY AND TRANSPARENTLY
We believe delivery should be clear, honest, and consistent. That’s why we don’t advertise “free delivery” while quietly building the cost into product prices or adding unexpected surcharges later in the checkout.
Instead, we charge delivery separately and transparently, so you can see exactly what you’re paying for, and so customers who order smaller quantities aren’t unfairly subsidising larger deliveries.
We deliver across the UK, including the Scottish Highlands & Isles, Northern Ireland, the Channel Islands, the Isle of Wight and the Isle of Man.
WHY WE DON’T OFFER “FREE DELIVERY”
There’s no such thing as truly free delivery — the cost has to be covered somewhere. Some retailers do this by:
- Increasing product prices to absorb delivery costs, or
- Adding extra charges at checkout (often based on delivery size/weight or certain postcodes)
Our approach is simple:
- Product prices stay product prices.
- Delivery is shown clearly and charged based on what it actually costs to send your order safely and on time.
DELIVERY CALCULATIONS
Delivery is calculated based on factors such as:
- Order size and weight
- The type of goods being shipped
- Delivery method (parcel, courier, pallet)
- Delivery location within the UK
You’ll always see the delivery cost clearly before you pay — simply enter your postcode at checkout and your delivery options will appear.
DISPATCH & DELIVERY TIMES
We aim to dispatch orders as quickly as possible, usually within 1–2 working days (subject to stock and order volume).
Delivery times vary depending on your location and the delivery method selected.
If your order is urgent, please contact us and we’ll do our best to help.
COLLECTION FROM OUR PETERBOROUGH DEPOT (PRIMETHORPE PAVING)
Collection is available from our Peterborough depot at Primethorpe Paving, Bungalow Business Park, PE6 7PP.
Please select the collection option at checkout (where available) or contact us to arrange a suitable time.
TRACKING & DELIVERY UPDATES
Where available, we’ll provide tracking details once your order has been dispatched.
ACCESS & DELIVERY RESTRICTIONS
To ensure a smooth delivery, please check:
- Access for large vehicles (if your order ships by pallet)
- That someone is available to receive the delivery
- Any site restrictions (narrow lanes, height limits, timed access, etc.)
If you’re unsure about anything, contact us before ordering, we’re happy to advise.
