Technical Data Sheet
| Document | RY-TDS-103 |
|---|---|
| Revision | Rev. 1.0 |
| Issue date | July 2026 |
| Status | Issued |
Rayson PrimeBond · Primers & bonding coats
Rayson PrimeBond S30 is a two-part, low-viscosity, solvent-based epoxy primer that penetrates and seals prepared concrete, pavements and mineral substrates before coating.
PrimeBond S30 uses a low-viscosity, solvent-based epoxy formulation to soak into prepared concrete and bind the surface before the floor system goes down. The two parts mix 1:1 and react to form a long-lasting sealing coat with excellent adhesion — pull-off testing on prepared concrete produces failure in the concrete, not the primer.
Primer.
Figure 1 — Typical system build-up (top to bottom). Layer thicknesses are system-dependent; confirm the specification for your project.
| Surface preparation | Substrate must be sound, clean and free of oil, grease, laitance, loose material and bond-inhibiting contaminants. Prepare concrete mechanically (captive shot blasting, milling or diamond grinding); remove weak concrete, open blowholes and voids, and reinstate imperfections with a suitable Rayson repair product. Vacuum all dust. New concrete should be at least 28 days old. |
|---|---|
| Mixing / dilution | Two pre-weighed parts, mix ratio 1:1 by weight; mix mechanically for at least 2–3 minutes; pot life up to 30 minutes at 28 °C |
| Application method | Roller, Brush, Airless spray |
| Coverage | 5–6 m² per litre per coat; minimum 2 coats on normal or dense concrete — varies with substrate porosity |
| Application conditions | Minimum substrate temperature 5 °C; substrate moisture content max 5%; minimum mixing temperature +10 °C; cure between +10 °C and +35 °C; prepared substrate pull-off strength above 1.5 N/mm². |
| Drying & curing | Final cure 7 days; minimise heavy traffic for 8 hours after application on pavements |
| Recoat interval | Confirm the recoat window with the Rayson technical team. |
| Film / thickness | Penetrating primer; consumption governs film. |
| Pack sizes | Part A 10 litres / Part B 10 litres per set |
| Storage | Minimum 12 months at 5–30 °C in unopened original packaging; protect from direct sunlight. |
| Shelf life | Approximately 12 months unopened; sunlight exposure reduces shelf life. |
Figure 2 — Application workflow. Each stage is a hold point: confirm the previous stage is complete and within specification before proceeding.
Exterior PU deck system
Dense concrete sealing
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.