Technical Data Sheet
| Document | RY-TDS-1103 |
|---|---|
| Revision | Rev. 1.0 |
| Issue date | July 2026 |
| Status | Issued |
Rayson SealForce · Polyurea waterproofing membranes
Rayson SealForce SP200 is a hot spray-applied, 100% solids, rapid-curing pure polyurea membrane that forms a seamless, chemically resistant waterproof and protective lining on concrete and steel.
SealForce SP200 is Rayson's spray-grade pure polyurea: a two-component, 100% solids system that gels in seconds and builds a seamless, monolithic membrane over concrete and steel — including across field joints. It is placed by heated plural-component spray equipment and is put into light service within minutes.
Standalone coating.
Figure 1 — Typical system build-up (top to bottom). Layer thicknesses are system-dependent; confirm the specification for your project.
| Surface preparation | Concrete is abrasive- or shot-blasted to a sound, open profile with blowholes filled; steel is grit-blasted to a clean, dry standard and coated before flash-rust reforms. Prime with the specified Rayson primer — a potable-grade primer where drinking-water contact applies — and allow it to become tack-free before spraying. |
|---|---|
| Mixing / dilution | Two components metered and mixed in the heated spray gun at a 1:1 volume ratio; block and hose temperature 60–70 °C, spray pressure 2000–2500 psi; do not dilute |
| Application method | Hot airless spray (plural-component) |
| Coverage | 1.0–3.0 litres/m² depending on specification; normal minimum 1.5 litres/m² (1.5 mm DFT external, 2.5–3.0 mm for water-retaining structures) |
| Application conditions | Applied by heated plural-component spray plant by specialist applicators; substrate above the dew point and free of surface moisture. |
| Drying & curing | Gel time 5–10 seconds; walkable ~2 minutes; light traffic 15–20 minutes; post-cure 24 hours |
| Recoat interval | Seamless single- or multi-pass application; consult the method statement for recoat and overlay windows. |
| Film / thickness | Typically 1.5 mm dry film externally, rising to 2.5–3.0 mm on water-retaining structures. |
| Pack sizes | Part A 22.5 kg or 225 kg; Part B 21 kg or 212 kg |
| Storage | Store in dry conditions in original, unopened drums. Shelf life about 24 months; high heat or humidity shortens it. |
| Shelf life | Approximately 24 months from manufacture in unopened original drums. |
Figure 2 — Application workflow. Each stage is a hold point: confirm the previous stage is complete and within specification before proceeding.
Sprayed tank / containment lining
Two-component product. Wear gloves, eye protection and suitable respiratory protection where ventilation is limited. Avoid skin and eye contact. Keep out of reach of children. Consult the Safety Data Sheet (in preparation) before use.