What sets Black Basalt apart from Grey Basalt for stair treads?
Black Basalt offers even higher compressive strength (280–380 MPa vs. 250–350 MPa) and lower water absorption than Grey Basalt, alongside a deep, uniform black color instead of charcoal-grey. It's the strongest tread option in our basalt range, suited to the most demanding applications.
What finish is used on Black Basalt stair treads?
Black Basalt treads are commonly finished with flamed, waterjet, and brushed treatments, combining reliable slip resistance with a refined surface texture. Polished, honed, and bush-hammered finishes are also available for interior applications or different aesthetic preferences.
Is Black Basalt suitable for exterior, high-traffic staircases?
Yes. With water absorption of just 0.1–0.2% and outstanding abrasion resistance, Black Basalt is well suited to exterior staircases, entryways, and high-traffic public areas that need to perform under heavy, repeated use across all seasons.
Does Black Basalt require any special maintenance?
Black Basalt is low-maintenance and acid-resistant, needing only routine cleaning to maintain its deep black appearance over time. Its combination of strength and minimal upkeep makes it a practical long-term choice for demanding commercial staircases.
Where is Black Basalt sourced from?
Black Basalt is sourced from Vietnam, China, and Mongolia, regions known for producing dense, high-strength volcanic stone. Sourcing from multiple regions within this network helps maintain consistent supply and quality across large tread orders.