Fungicidal Wash for Exterior Walls
To protect external surfaces such as rendered walls, pebble dash, and outdoor wooden structures, a fungicidal wash for exterior walls and surfaces is required to kill biological contaminants including algae, fungi, mould and lichen.
Once these contaminants have been removed, the exterior surfaces will be protected against future growth, and can be painted or treated for further protection.
GK Concentrated Fungicidal Wash: The Powerful Surface Biocide
GK Concentrated Fungicidal Wash is a broad spectrum, surface biocide, for use against fungal and algal growths on hard surfaces. This professional grade, unique fungicidal wash has been designed for cleaning and sanitising external walls prior to decoration.
It can be used as a ‘decorator’s mate’, making external walls and surfaces ready for paint application once dried.
The formulation is self-neutralising, so it doesn’t require any washing down. Simply allow the dilution to evaporate naturally and surfaces will be ready for treatment application once it has dried. No waiting, and no rinsing.
How to Apply GK Concentrated Fungicidal Wash
Surface Preparation: Remove all dirt, grease, and loose coatings. Scrape off mosses, lichens, mould, or algae growth using a stiff brush.
Fungicidal Wash Application: Dilute 1 litre of GK Concentrated Fungicidal Wash with 4 litres of water to create 5 litres of usable solution. Apply using a brush, roller, or spray in dry conditions.
Evaporation: Allow the solution to evaporate naturally for optimal effectiveness. No rinsing required.
Repeat Application: For heavily infected surfaces, a further application may be necessary.
Caution: Wear appropriate PPE, including protective gloves and eye/face protection, during application.
Why Treat Exterior Walls with Fungicidal Wash Prior to Decorating?
You should treat outdoor walls with a fungicidal wash before painting to kill and neutralise biological growth like mould, algae, lichen, and mildew. Failing to do this is one of the most common reasons exterior paint fails prematurely.
Prevents Premature Paint Failure: Mould and algae are living organisms that require moisture to survive. If you simply paint over them, they remain alive underneath the new paint film. These organisms will continue to grow and reproduce, quickly causing the fresh paint to crack, bubble, peel, or flake off as the paint loses adhesion.
Ensures Proper Adhesion: The surface must be perfectly clean and stable for any new paint to adhere correctly. Biological contaminants leave behind a microscopic layer of organic residue that acts as a release agent, preventing a strong bond between the wall and the paint. Fungicidal wash eliminates this residue, guaranteeing a clean substrate for optimal paint adhesion and a smooth finish.
Stops Recurrence: Unlike water or detergent alone, a fungicidal wash contains active ingredients that penetrate the surface slightly to kill the mould spores and fungal roots. This residual effect provides a clean, sanitised base that inhibits immediate regrowth, significantly extending the life and integrity of the paint job.
In short, treating the wall ensures the paint is protecting the house, not just covering up a living colony of destructive organisms.
Key Features of GK Concentrated Fungicidal Wash
Self-Neutralising Formula: No washing down required - our unique formulation allows the dilution to naturally evaporate. Surfaces are paint-ready once dried, eliminating waiting time and rinsing hassles.
Broad Spectrum Biocide: Specifically designed for professional use, GK Concentrated Fungicidal Wash acts as a powerful surface biocide, targeting and eliminating 99.9% of fungal and algal growth on hard surfaces.
Internal and External Use: Appropriate for use on surfaces both inside and outside your home or premises.
Minimises Regrowth Risk: Our solution actively reduces the likelihood of fungal regrowth in treated areas.
Acid and Bleach Free: Free of harmful chemicals that can damage underlying materials.
Summary
If you’re looking for an effective fungicidal wash for exterior walls, then GK Concentrated Fungicidal Wash is the perfect decorator’s mate.
Our unique formulation allows the dilution to naturally evaporate so surfaces are paint-ready once dried, eliminating waiting time and rinsing hassles. GK Concentrated Fungicidal Wash acts as a powerful surface biocide, targeting and eliminating 99.9% of fungal and algal growth on hard surfaces.
