Rayston Floor D50 FR: Fire-Rated Polyurea Floor Coating, Hot-Sprayed
Rayston Floor D50 FR is a two-component, hot-sprayed polyurea membrane that cures into a hard layer: a fire-rated polyurea floor coating for fast-track projects.
- Product: Rayston Floor D50 FR
- Application: hot-spray flooring
- Mix: A=1 : B=1.1 by weight / 1:1 by volume
- Gel time: 8–10 s at 25 °C
Reaction to fire Bfl-s1 to EN 13501-1:2018, OS 10 approval and CE marking to EN 13813.
01 · Uses
Uses of a fire-rated polyurea floor coating
- Fast-track flooring systems.
- Decorative and industrial floors where speed of execution is essential.
See the OS 10 car-park flooring build-up, our resin floor classes by traffic and the industrial flooring application page.
02 · Application
Application of Rayston Floor D50 FR
Mix ratio is A=1 : B=1.1 by weight (1:1 by volume). It is usually sprayed at 2–3 kg/m² and 130–150 bar, with component A at 65–70 °C, component B at 70–75 °C and the hose at 70 °C.
Vehicles can drive on it after 4–5 hours, and a topcoat can be applied after 60 minutes.
Technical datasheet: Rayston Floor D50 FR TDS (PDF) · Polyurea waterproofing systems
03 · Technical data
Rayston Floor D50 FR technical data (TDS values)
Shore hardness
50D
Elongation at break
300%
Tensile strength
21 MPa
Tear strength
98 N/mm
Technical data
- Hardness (Shore): 50D
- Elongation at break: 300%
- Tensile strength: 21 MPa (EN-ISO 527-3)
- Tear strength: 98 N/mm (ISO 34-1, method B)
- BCA wear resistance: 10 µm (UNE-EN 13892-4)
- Impact resistance: >24.5 N·m (UNE-EN ISO 6272)
- Adhesion: 3.8 N/mm² (UNE-EN 13892-8)
- Radon diffusion coefficient: 2.6 × 10⁻¹¹ m²/s (ISO 11665-13)
Approvals
- Reaction to fire: Bfl-s1 (EN 13501-1:2018)
- OS 10 approval
- Crack-bridging class IVT+V at -20 °C after 7 days of artificial ageing (part of OS 10 testing)
- CE marking under Regulation (EU) No 305/2011 and EN 13813
- Radon diffusion coefficient certificate, ISO 11665-13
04 · Performance
Rayston Floor D50 FR performance
Hardness is 50D, elongation at break 300%, tensile strength 21 MPa (EN-ISO 527-3) and tear strength 98 N/mm (ISO 34-1).
BCA wear is just 10 µm, impact resistance above 24.5 N·m, adhesion 3.8 N/mm², and the radon diffusion coefficient 2.6 × 10⁻¹¹ m²/s – a rare combination for a floor that is back in service the same day.
Application data
- Mix ratio: A=1, B=1.1 by weight; A=1, B=1 by volume
- Gel time (A+B, 20 g): 8–10 s at 25 °C
- Recommended temperatures: component A 65–70 °C, component B 70–75 °C, hose 70 °C
- Pressure: 130–150 bar
- Reference spray rate: 2–3 kg/m²
- Vehicle traffic after 4–5 h; topcoat after 60 min
05 · FAQ
Rayston Floor D50 FR: frequently asked questions
What fire rating does Rayston Floor D50 FR have?
Bfl-s1 reaction to fire according to EN 13501-1:2018.
Is it approved for car parks?
It holds OS 10 approval, including crack-bridging class IVT+V at -20 °C after artificial ageing, and CE marking to EN 13813.
When can vehicles use the floor?
After 4–5 hours; a topcoat can be applied after 60 minutes.
More Impermax and Rayston polyurea products
Every product page in this series is based on its official Krypton Chemical technical datasheet.
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