Rialto Primer – Acrylic Based, Penetrating Primer
Price range: £20.45 through £102.93 including VAT
Penetrating and fixing colourless priming coat for interiors and exteriors
Based on an acrylic resin binder treated with selected additives for deep penetration and improved adhesion. Doubles as a binder for dusty gypsum plasterboard and gypsum walls, and for anchoring surfaces like polystyrene or polyester panels that have become dusty from UV exposure.
Application Method(s)
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- Penetrating, colourless priming coat
- For interior and exterior use
- Excellent adhesion, remarkably flexible
- Permeable to water vapour
- Non-toxic and non-flammable
- Apply by brush, roller or spray
Application Difficulty
1 = easiest to apply, 5 = hardest. A guide to the skill and care this finish takes to apply well, not a stock or delivery rating.
1
Working Instructions
- Remove any loose material, loose paint film or traces of mould with a hard bristle brush or scraper.
- Dilute with water according to the surface — exterior plaster 1:10, interior plaster/gypsum 1:8, old washable paint/tuff/brick/artificial stone 1:6.
- Apply with brush, roller or spray.
- On highly absorbent surfaces, apply two coats 3–4 hours apart. Do not create a surface film.
- Allow at least 6 hours to dry before applying finishing products.
- Do not apply in rainy weather, on frozen surfaces, or below 5°C (41°F) / above 35°C (95°F).
- Clean tools with water immediately after use.
- Store between 5°C (41°F) and 40°C (104°F).
Technical Specifications
| Coverage | 10–50 m² per litre, depending on dilution and surface |
|---|---|
| Application method | Brush, roller or spray |
| Pack sizes | 1L and 5L |
| Specific gravity | 1.03 kg/l |
| pH | 5.5 ± 0.5 |
| Viscosity | 600 ± 100 mPas |
| Dry residue | 45 ± 1% by weight |
| Dry time before finishing | 6 hours minimum |
Full test methods and reference standards are listed in the product’s technical data sheet.
Disclaimers
- Dilution ratio depends on the surface — see Working Instructions above.
- Do not apply in rain, on frozen surfaces, or outside the 5–35°C application window.





