Kenyan Black Granite – Polished Countertop Slab
Kenyan Black Granite Countertops & Slabs in Nairobi
Deep black, mirror-polished natural granite for kitchen worktops, bathroom vanity tops, stair treads, window sills and reception counters. Hard-wearing, heat resistant and timeless, available on Magadi Road at our Ongata Rongai and Tuala branches.
Product Overview
Kenyan Black Granite is a dense, natural igneous stone with a rich black base and fine silver-grey speckles that sparkle under light. Each slab is factory polished to a high-gloss mirror finish that reflects light and gives kitchens and bathrooms an instant premium look.
Because granite is one of the hardest natural building stones, black granite countertops resist scratches, heat and daily wear far better than laminate or wood tops. Its low porosity makes it hygienic for food preparation, and the dark colour hides small marks, making it a popular choice for busy family kitchens, restaurants, hotels and offices across Nairobi, Kajiado and the rest of Kenya.
Shabbiri Hardware has supplied building and finishing materials since 1990. We stock black granite slabs ready for fabrication into kitchen tops, vanity tops, steps and sills.
Technical Specifications
| Property | Specification |
|---|---|
| Product Name | Kenyan Black Granite – Polished Countertop Slab |
| Material | Natural granite (igneous rock) |
| Colour | Deep black with fine silver-grey speckles |
| Surface Finish | High-gloss mirror polish |
| Typical Thickness | 18 mm – 20 mm |
| Supply Format | Slabs and countertop pieces (confirm available sizes at the branch) |
| Density | Approx. 2.8 – 3.0 g/cm³ |
| Slab Sizes | 8ft x 2ft |
| Weight | Approx. 55 kg per m² at 20 mm thickness |
| Water Absorption | Below 0.2% by weight |
| Compressive Strength | Above 150 MPa |
| Flexural Strength | Approx. 10 – 20 MPa |
| Mohs Hardness | 6 – 7 |
| Heat Resistance | High – suitable for kitchen use (trivets recommended for very hot pots) |
| UV & Weather Resistance | Colour stable; suitable for indoor and outdoor use |
| Edge Profiles (by fabricator) | Straight polished, bevel, half bullnose, full bullnose, ogee |
| Cut-outs (by fabricator) | Undermount or top-mount sinks, hobs, basins and taps |
| Recommended Sealer | Penetrating (impregnating) natural stone sealer |
Values are typical for polished black granite. Natural stone varies slightly in pattern and shade from slab to slab, which is part of its character.
Key Features & Benefits
Elegant Deep Black Finish
Rich black surface with subtle speckles that suits modern, classic and minimalist interiors.
Extremely Durable
High hardness and compressive strength give a worktop that lasts for decades with simple care.
Heat Resistant
Natural stone handles kitchen heat well, ideal next to cookers and ovens.
Hygienic Surface
Low porosity and a smooth polished face make it easy to wipe clean and keep germ-free.
Stain & Mark Hiding
The dark colour hides everyday spills and marks better than light stone.
Adds Property Value
Granite kitchens and bathrooms are a sought-after feature for buyers and tenants.
Applications
How to Use – From Slab to Finished Countertop
Measure the Area
Measure the length and depth of every run of cabinet, allowing about 20 mm overhang at the front. Note sink, hob and tap positions and any corners or L-shapes.
Prepare the Base
Make sure kitchen cabinets or the concrete/masonry base are level, strong and firmly fixed. A flat, rigid support prevents cracking. For long spans, add support battens or a plywood/MDF sub-top.
Choose Your Slab
Visit our Ongata Rongai or Tuala branch to view the slabs and pick the pieces that suit your layout.
Cutting & Fabrication
The granite is cut with diamond blades by a stone fabricator, who also makes sink and hob cut-outs and polishes the edges to your chosen profile. Shabbiri Hardware supplies the granite only, and we can share contacts of independent fabricators and installers.
Installation
Lay the top on a bed of stone or silicone adhesive spots on the levelled base. Joints are bonded with colour-matched granite epoxy and polished flush. Seal around sinks and walls with clear or black sanitary silicone.
Seal the Surface
Once fixed and clean, apply a penetrating natural stone sealer with a lint-free cloth, leave it to soak in as directed by the manufacturer, then buff off the excess.
Curing & First Use
Allow adhesives and sealer to cure fully, usually 24 hours, before heavy use or washing.
Care & Maintenance
Do
- Wipe daily with warm water, mild soap and a soft cloth.
- Dry with a microfibre cloth for a streak-free shine.
- Wipe up oil, wine, juice and coffee spills promptly.
- Use chopping boards and trivets.
- Re-seal every one to two years, or when water stops beading.
Don't
- Use bleach, vinegar, lemon or acidic cleaners.
- Use scouring powder or steel wool.
- Stand or sit on unsupported overhangs.
- Drop heavy pots on the edges.
- Leave standing water around the sink for long periods.
Frequently Asked Questions
Is black granite good for kitchen countertops?
Yes. Black granite is very hard, low in water absorption and resistant to heat and scratches, which makes it one of the most durable natural stones for kitchen worktops.
Does black granite stain?
Black granite has very low porosity and the dark colour hides marks well. Applying a penetrating stone sealer after installation and wiping spills promptly keeps it looking new.
Can I place hot pots on black granite?
Granite tolerates kitchen heat well, but we recommend trivets for very hot pots to protect the sealer and avoid sudden heat stress.
Can black granite be used outdoors?
Yes. It is colour stable in sunlight and resists weather, making it suitable for outdoor kitchens, steps and BBQ counters.
Does Shabbiri Hardware cut and install granite?
We supply the granite only. We can share contacts of independent fabricators and installers who cut, polish edges and fit the tops on site.
Where can I buy black granite in Nairobi?
Visit Shabbiri Hardware on Magadi Road at the Ongata Rongai branch opposite Hashi Petrol Station or the Tuala branch past Nazarene University.
Why Buy from Shabbiri Hardware?
- Trusted hardware and building materials supplier since 1990
- View and choose your slabs in person at two branches on Magadi Road
- Complete kitchen and bathroom range in one place – granite, quartz, marble sheets, sinks, taps and sanitary ware
- Contacts of reliable independent fabricators and installers
- Friendly, knowledgeable staff ready to advise on your project
Visit or Contact Us
Ongata Rongai Branch
Magadi Road, opposite Hashi Petrol Station, Ongata Rongai
Tuala Branch
Magadi Road, past Nazarene University, Tuala
Specifications
| Model | Kenyan Black |
| Category | Granite Slabs |
| Availability | In stock |
| Sourced by | Shabbiri Hardware Kenya Limited |
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