Technical Data Sheet
| Document | RY-TDS-702 |
|---|---|
| Revision | Rev. 1.0 |
| Issue date | July 2026 |
| Status | Issued |
Rayson UraForce · Polyurethane finishes
Rayson UraForce SB65 is a two-component, solvent-based aliphatic polyurethane clear topcoat with excellent abrasion resistance, non-yellowing behaviour and outstanding weather durability for concrete, metal and stone.
UraForce SB65 is the clear aliphatic polyurethane in the Rayson range, available in gloss, satin and matt. It seals and dustproofs concrete and hard mineral surfaces with a film that will not yellow, offering outstanding weather resistance and durability alongside excellent abrasion resistance and low dirt pick-up.
Finish.
Figure 1 — Typical system build-up (top to bottom). Layer thicknesses are system-dependent; confirm the specification for your project.
| Surface preparation | New concrete should be at least 28 days old with moisture below 5%. Remove laitance and loose material; mechanically prepare damaged concrete to exposed aggregate. On existing concrete, prefer mechanical preparation followed by industrial vacuuming and degrease with industrial detergent; the substrate is sufficiently dry at surface relative humidity of 75% or lower. |
|---|---|
| Mixing / dilution | Two pre-weighed parts, mix ratio 4:1 by volume; stir parts separately, combine and mix with a slow-speed drill and paddle for 1–2 minutes; pot life approximately 2 hours |
| Application method | Short-bristled brush, Roller |
| Coverage | Available from the Rayson technical team on request. |
| Application conditions | Minimum substrate temperature 5 °C; minimum mixing temperature 10 °C; minimum curing temperature 5 °C; keep floor dew point within 3 °C of atmospheric temperature. |
| Drying & curing | Surface dry 6 hours at 25 °C |
| Recoat interval | Available from the Rayson technical team on request. |
| Film / thickness | Applied at approximately 100 µm wet film per coat. |
| Pack sizes | Part A 4 Lt can + Part B 1 Lt can |
| Storage | Store under cover in dry conditions, protected from temperature extremes. |
| Shelf life | Approximately 12 months for the base; 6–12 months for the hardener, unopened. |
Figure 2 — Application workflow. Each stage is a hold point: confirm the previous stage is complete and within specification before proceeding.
Clear protective finish
Solvent-based product — flammable. Ensure good ventilation, keep away from ignition sources, and wear gloves, eye and respiratory protection. Avoid skin and eye contact. Keep out of reach of children. Consult the Safety Data Sheet (in preparation) before use.