Sandtex Fungicidal Wash

Sandtex Fungicidal Wash is an exterior surface treatment designed to deal with contamination caused by organic growth on outdoor surfaces before painting or renovation work begins. Suitable for use on masonry, render, brickwork, concrete, stone and patios, it helps improve surface condition prior to decorating and maintenance projects.

The formula is suitable for both professional and home use, making it ideal for exterior walls, paths, driveways and other exposed areas where damp conditions can encourage surface contamination. Easy to apply and simple to work with, Sandtex Fungicidal Wash is a practical solution for exterior surface preparation and ongoing property maintenance.

For porous or chalky exterior surfaces, follow with Sandtex Quick Drying Stabilising Solution before painting to help improve surface stability and coating adhesion.

Surfaces should be clean, stable and free from loose material, dirt and heavy surface contamination before treatment begins.

• Remove loose paint, dirt and surface contamination with a suitable cleaner such as before application
• Scrape or brush away algae, mould, moss and lichen using a stiff bristle brush, such a the Woodleys Exterior Block Brush
• Avoid using wire brushes that may damage masonry or decorative surfaces
• Heavily affected areas may require pressure washing before treatment
• Allow surfaces to dry after cleaning and before applying decorative coatings
• Cover nearby plants and exterior surfaces to protect against accidental splashes

Always test a small area before starting any project to check suitability and compatibility. Do not apply during wet weather, frost or when rain is expected before the surface has fully dried.

• Apply liberally using a synthetic or stiff nylon bristle like the ProDec Masonry Brush
• Work the solution well into affected areas to fully saturate the surface
• Pay particular attention to heavily contaminated areas and deep textured surfaces
• Leave the treatment for 24 hours to allow the fungicidal action to work effectively
• Rinse or scrub away remaining organic residue with clean water and a stiff bristle brush
• Where contamination remains visible, apply a further treatment once the surface is dry

1) What is Sandtex Fungicidal Wash used for?
Sandtex Fungicidal Wash is used to treat and clean exterior surfaces affected by mould, algae, fungal growth and lichen before painting or maintenance work.

2) What surfaces can Sandtex Fungicidal Wash be used on?
Suitable surfaces include masonry, render, brickwork, concrete, stone, exterior walls, patios and paths.

3) How is Sandtex Fungicidal Wash applied?
Apply liberally using a synthetic or stiff nylon bristle brush, ensuring affected areas are fully saturated during treatment.

4) How long should Sandtex Fungicidal Wash be left before rinsing?
Leave the treatment on the surface for approximately 24 hours before rinsing or scrubbing away remaining residue.

5) Can Sandtex Fungicidal Wash be painted over?
Yes. Once the treated surface has been cleaned, rinsed and allowed to fully dry, it can be painted with a suitable exterior coating system.

6) Does Sandtex Fungicidal Wash require more than one coat?
One application is normally sufficient, however heavily contaminated surfaces may require a second treatment.

7) Can Sandtex Fungicidal Wash be used during wet or cold weather?
No. Do not apply during rain, frost or when poor weather conditions are expected, as this may affect performance and drying.