Thermal Anti Condensation Paint

Q: What is anti-condensation paint and how does it work?
A: Anti-condensation paint is specially formulated to reduce surface condensation on walls and ceilings. It contains high-strength, low-density additives that create a thermal insulating layer, helping to keep surfaces warmer and drier. This discourages dew point formation and reduces moisture buildup in high-humidity rooms like bathrooms, kitchens, and bedrooms.
Q: In which rooms or conditions is anti-condensation paint best used?
A: Anti-condensation paint is ideal for high-humidity or poorly ventilated areas such as bathrooms, kitchens, laundries, basements, and bedrooms. It’s especially useful in rooms where condensation issues have previously occurred, or where external insulation or ventilation upgrades are not feasible. For best results, combine it with good ventilation (extractor fans, open windows) and adequate heating.
Q: Does anti-condensation paint help prevent mould?
A: Yes, anti-condensation paint helps inhibit mould growth by reducing surface moisture and improving thermal performance. However, it’s not a complete mould solution — it works best alongside good ventilation and heating. If mould is already present, treat it with a suitable mould killer and allow it to dry fully before painting. Do not paint over active mould.
Q: Can I use anti-condensation paint on ceilings?
A: Yes. Anti-condensation paint works on both walls and ceilings. Ceilings are often the first place condensation appears, especially in bathrooms and kitchens. Apply using a brush or roller, allow 4–6 hours drying time between coats, and ensure good ventilation during application. Two coats are recommended for best thermal performance.
Q: What surfaces can I paint with anti-condensation paint?
A: Anti-condensation paint can be used on plaster, drywall, cement, and previously painted surfaces. Ensure the area is clean, dry, and free of existing mould before application. If necessary, use a suitable primer or stabilising coat on very porous or flaky surfaces. Lightly abrade shiny or glossy surfaces for better adhesion, and remove all residual dust before painting.
Q: How many coats of anti-condensation paint do I need?
A: One coat may be visible, but two coats are recommended for best results. Two coats provide improved thermal performance, better mould inhibition, and more consistent coverage. Allow 4–6 hours drying time between coats, and ensure good ventilation during and after application.
Q: What size tub do I need (1L, 2.5L, 5L, 10L)?
A: Choose based on the area you’re treating. 1L is ideal for small areas, test patches, or problem corners (approx. 12–14 m² per coat). 2.5L suits a typical wall section or small room (approx. 30–35 m² per coat). 5L covers one room depending on size and coats (approx. 60–70 m² per coat). 10L is best for multiple rooms or larger jobs (approx. 120–140 m² per coat). Coverage varies by surface porosity and texture.
Q: Can anti-condensation paint be tinted or colour-matched, and is it durable and washable?
A: TruTherm Anti-Condensation Paint is available in White and Magnolia. Once fully cured, the surface is durable and can be lightly cleaned (gentle wiping), but avoid harsh scrubbing to preserve its thermal properties. For custom colour options, contact our technical team for advice.
Q: Will anti-condensation paint fix damp patches or penetrating damp?
A: No. Anti-condensation paint is designed to reduce surface condensation risk caused by temperature differences and moisture in the air. It will not fix structural damp issues such as leaks, penetrating damp, or rising damp — these require structural repairs first. If you have damp patches from water ingress, address the source before painting.