Rialto Eco Fondo – Masking primer for lime paints and plasters
£47.75 including VAT
Adhesion promoter with high hiding power for interiors
Rialto Eco Fondo is a white opaque sandy basecoat made from a special vinyl copolymer and selected aggregates including marble dust and titanium dioxide — the ideal primer for gypsum board, drywall and fine plasters before a mineral or organic-binder finish.
Application Method(s)
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- High-hiding, opaque white basecoat
- High water-vapour permeability
- Water-based — thinnable up to 10%
- Brush or roller application
- Non-flammable
- Extremely low VOC (max 18 g/l)
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
Watch the Application Video
Working Instructions
- Apply directly to dry, clean gypsum board/drywall — do not use where there’s damp, staining or mould.
- On new plaster, wait at least 28 days for complete drying before applying.
- On old plaster, remove loose or dusty paint and any grease, and confirm the surface hasn’t previously been treated with a silicone or similar colourless coating. Repair damage with mortar and allow 28 days to cure first.
- Smooth uneven areas with Rialto Wallcem before applying, if needed.
- On dusty or highly absorbent surfaces, apply a coat of Rialto Primer diluted 1:10 with water first to reduce absorption.
- Clean brushes and tools with water immediately after use.
Technical Specifications
| Coverage | Approx. 7 m² per kg, single coat (varies with substrate) |
|---|---|
| Application method | Brush or roller |
| Pack sizes | 5kg and 20kg |
| Dilution | Water-thinnable, max 10% |
| Specific gravity | 1.58 ± 0.05 kg/l |
| pH | 7.2 ± 0.5 |
| VOC | Extremely low (max 18 g/l) |
Full test methods and reference standards are listed in the product’s technical data sheet.
Disclaimers
- Not suitable where there is evident damp, staining (tannins) or mould.
- Suited to gypsum board/drywall, fine plasters, concrete, prefabricated elements, Rialto Wallcem, and sound old paint on organic binders.
8 in stock






