PRIME KEY + is a premium bonding primer specifically formulated as a bonding agent for levelling mortars and renders on concrete surfaces (ceilings, columns, beams, formwork). It improves workability and adhesion of subsequent levelling or repair mortars, providing an excellent key for cementitious overlays.
(Original: “PRIME KEY + est un primaire d’accrochage de grade supérieure …”)
Available Pack Sizes
• 20.00 kg
In Stock
| Property | Specification |
|---|---|
| Base | Acrylic polymer dispersion |
| Appearance | Milky white liquid |
| Density | Approx. 1.30–1.40 g/cm³ |
| pH | 8–9 (approx.) |
| Drying Time | 30–60 minutes @ 25°C (depending on porosity and humidity) |
| Coverage | 6–8 m²/kg (depending on substrate porosity) |
| Application Temperature | 5°C – 35°C |
| Shelf Life | 12 months (unopened) |
| Storage | Store in a cool, dry place (5–30°C). Protect from frost. |
It’s a high-performance bonding primer used to improve adhesion of levelling mortars and renders on concrete substrates (ceilings, columns, beams).
No — use as supplied. Stir well and apply directly. (If spraying, follow manufacturer guidance for thinning.)
Typically after 30–60 minutes when the primer is tack-free; timing depends on temperature and porosity.
It can be used on sound painted surfaces after removing loose paint; very smooth or glossy coatings should be roughened first.
Approximately 120–160 m² (one coat), depending on substrate porosity and application method.
Yes — it can be used both internally and externally but avoid application during heavy rain or freezing conditions.
Store sealed in a cool, dry place (5–30°C), protect from frost. Shelf life is typically 12 months.
A second coat may be applied on very porous substrates, but usually one even coat is sufficient.
Yes — PRIME KEY + is formulated to work with gypsum and cementitious levelling mortars to improve bonding.
Wear gloves and eye protection, avoid inhaling spray mist, and ensure good ventilation during application.
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