Technical details of our stone carpet

Our RISTO® stone carpet stands for exceptional quality and long-lasting performance. It is CE-certified and meets the highest standards for durability, safety, and environmental friendliness.

Stone carpet structure

Seamless, homogeneous surface: Solvent-free, open-pored, and slip-resistant.
Abrasion-resistant, slip-proof, and comfortable underfoot: Designed for high-traffic areas.
Substrate & installation: Suitable for solid, load-bearing surfaces such as concrete, screed, asphalt, tiles, marble, wood, and chipboard (indoors). On softer or flexible substrates (e.g. insulation or cork), installation with a self-supporting layer (approx. 15–18 mm) is possible.
Single-layer system: Available as open-pored or with sealed surface (pore closure).
Laying thickness: 4-6 mm (for grain size 1-2 mm or 2-3 mm) or 6-8 mm (for grain size 2-4 mm or 4-6 mm)
Weight: Approx. 12–16 kg/m² (2.0 kg per mm of thickness).
Curing times: Walkable after 24 hours, fully chemically cured after 7 days.

RISTO® stone carpets: certifications and key features

CE certified: Complies with European safety and quality standards
 Extremely durable: Suitable for heavy use in both residential and commercial settings
Slip resistance: R9/R10 (depending on grain size), plus A+B+C rating for wet barefoot areas
Sound-absorbing: According to DIN EN ISO 354 and DIN EN ISO 11654
Non-combustible with low flammable content: Classified A2 FL-s1 under DIN EN 13501-1
 Compatible with underfloor heating: For even and comfortable warmth
 Frost-resistant: Perfect for outdoor use
 Chair castor resistant & wheelchair friendly: Highly abrasion-resistant and durable
 Odorless: Completely odor-free when cured; nearly odorless during installation
Low maintenance: Easy to clean, hygienic, and stain-resistant

The quality of our stone carpets is regularly tested by independent, state-approved institutes — and continuously monitored through our own in-house quality controls.

Technical data & test results

Compressive strength: 30.5 N/mm³
 Flexural strength: 10.0 N/mm³
 Tensile strength: 3.0 N/mm³
 Abrasion resistance: Vm = 171 mm³
 Adhesion to concrete: 1.88 N/mm²
 Modulus of elasticity (E-modulus): 5,700 N/mm²
Temperature resistance: –40°C to +80°C
Electrical conductivity: Surface resistance 1.08 × 10¹² ohms (no static charge while walking)