Spanish Slate Quarries UK Ltd

Exterior Stone Cladding - Riverstone Phyllite Riverstone is SSQ’s sensational architectural stone product – not slate, but phyllite, made harder, denser and stronger by millions more years spent underground. Riverstone is SSQ’s sensational architectural stone product – not slate, but phyllite, made harder, denser and stronger by millions more years spent underground. Riverstone might make for an outstanding roofing material – but that’s far from the only context it excels. Due to its satin phyllitic sheen appearance, coarse grain and naturally riven surface that makes it more slip-resistant than natural slate, Phyllite is extremely versatile, making it a perfect product for flooring, cladding, stairs, skirting, patios, worktops and even swimming pools.