Technical Data Sheet
| Document | RY-TDS-1102 |
|---|---|
| Revision | Rev. 1.0 |
| Issue date | July 2026 |
| Status | Issued |
Rayson SealForce · Polyurea waterproofing membranes
Rayson SealForce RC30 is a two-component, roller-applied polyurea-based liquid waterproofing membrane — highly elastic and hydrophobic, bonding strongly to concrete, tile, metal and asphalt for wet areas, roofs and car parks.
SealForce RC30 is Rayson's general-purpose liquid waterproofing membrane: a two-component polyurea-based system, roller-applied, that cures to a tough, highly elastic and hydrophobic film keyed hard to almost any prepared surface. It is designed to be tiled over, built into deck systems or left as the working membrane.
Standalone coating.
Figure 1 — Typical system build-up (top to bottom). Layer thicknesses are system-dependent; confirm the specification for your project.
| Surface preparation | Surface must be clean and sound, free of dust, oil, paint residue and old coatings. Repair cracks and joint edges with a suitable sealant or mortar, and fill surface irregularities. The concrete must reach at least 25 N/mm² compressive and 1.5 N/mm² pull-off strength, then be primed for its absorbency and surface type. |
|---|---|
| Mixing / dilution | Two components; add Part B to Part A and mix with a low-speed mixer (~300 rpm) for 2–3 minutes to a uniform colour; prepare only what can be used within the pot life |
| Application method | Roller, Brush |
| Coverage | 1.5–1.8 kg/m² total (typically two coats at 0.75–0.9 kg/m² each) |
| Application conditions | Do not apply below +5 °C. Keep away from ignition sources and ventilate — the wet product is flammable. |
| Drying & curing | Pot life ~30 minutes; 4–6 hours to cure; 6–12 hours between coats; final cure 7 days |
| Recoat interval | Apply the next coat 6–12 hours after the previous one; the film cures in 4–6 hours. |
| Film / thickness | Two coats at 0.75–0.9 kg/m² per coat; minimum total consumption 1.5–1.8 kg/m². |
| Pack sizes | Part A 25 kg + Part B 1.5 kg |
| Storage | Store in unopened original packaging in a cool, dry, covered area out of direct sunlight. |
| Shelf life | Approximately 12 months unopened, subject to storage conditions. |
Figure 2 — Application workflow. Each stage is a hold point: confirm the previous stage is complete and within specification before proceeding.
Wet-area / under-tile waterproofing
Car-park deck waterproofing
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.