
MouldSeal
Premium water-based acrylic sealer for high-humidity walls.
A premium water-based acrylic sealer providing superior mould resistance, creating a durable barrier that protects walls from moisture infiltration. Formulated to resist alkali attack, so the topcoat finish above it lasts. Used with a compatible interior paint it forms a complete mould-prevention system for high-humidity environments, while maintaining indoor air quality.
For heavily mould-affected conditions, we recommend repainting with MouldSeal + Care Interior after carrying out any necessary make-good works.
Product features
- Formaldehyde-free
- Ultra-low VOC
- Superior mould resistance
- High water ponding resistance
- High-performance coverage of hairline cracks
- Good adhesion and alkali resistance
Design use
- Interior walls in high-humidity environments
- Substrates prone to recurring mould growth
- As the sealer coat beneath a compatible interior topcoat
Technical data
| Type | Acrylic emulsion |
|---|---|
| Finish | Matte |
| Application method | Roller, brush or spray |
| Theoretical coverage | 10–12 m²/L (35–40 microns DFT) |
| Dilution | Max 10% with clean water |
| Surface drying time | 30 mins at 25°C |
| Cleaning solvent | Clean water |
| Solid content | 52 ± 2% by weight (white) |
| Specific gravity | 1.30 ± 2% kg/L (white) |
| Packing | 20 litres |
| Shelf life | Up to 24 months in a tightly sealed container |
| Storage | Tightly sealed, in a cool dry place |







