GK Concentrated Fungicidal Wash 1Ltr
GK Concentrated Fungicidal Wash 1Ltr

GK Concentrated Fungicidal Wash 1Ltr

Professional Grade
£7.20 INC VAT
£6.00 Exc VAT
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  • Estimated Delivery:Dec 31 - Jan 04

  • Free Mainland UK Delivery : On Orders Over £60

Product Description

GK Concentrated Fungicidal Wash is a professional-grade biocide solution specifically engineered for treating mould, fungus, algae, and lichen on interior and exterior surfaces before painting or decorating.

This HSE-licensed (No.10766) fungicidal treatment eliminates 99.9% of biological growth whilst preparing surfaces for immediate decoration—no rinsing or neutralisation required.

Designed as the professional decorator's essential pre-treatment solution, GK Concentrated Fungicidal Wash addresses the root cause of paint failure: biological contamination.

By eradicating fungal and algal growth at the cellular level before paint application, this product ensures long-lasting decoration that won't peel, bubble, or discolour due to underlying biological activity.

Why Use Fungicidal Wash Before Painting?

Painting over mould, algae, or fungus without proper treatment leads to rapid paint failure.

  • Biological organisms continue growing beneath paint films, causing:
  • Premature paint peeling and flaking
  • Discolouration and staining bleeding through new coatings
  • Unpleasant odours in interior spaces
  • Costly redecoration within months rather than years
  • Health concerns from airborne spores

GK Concentrated Fungicidal Wash eliminates these issues by creating a biologically clean surface that allows paint to bond properly and perform as intended.

GK Concentrated Fungicidal Wash is a broad spectrum, surface biocide, for professional use against fungal and algal growths on hard surfaces.

HSE Licence No.10766.

Users must comply in full with all legal responsibilities under The Control of biocides Regulations 1986 including complying with all Conditions of Approval.


Key Features

• Self-Neutralising Formula: The revolutionary self-neutralising formulation eliminates the labour-intense washing-down process required by traditional fungicidal treatments. Simply apply the diluted solution and allow natural evaporation—surfaces become paint-ready once dried. This unique feature saves hours of labour on every project whilst ensuring optimal surface preparation. No waiting periods, no water damage from excessive rinsing, no dried residues requiring removal.

• Broad Spectrum Biocide: HSE-licensed as a broad-spectrum surface biocide for professional use against fungal and algal growth. The concentrated formulation targets mould spores, algae colonies, lichen, and bacterial contamination, eliminating 99.9% of biological growth. Unlike household bleach or generic cleaners that merely bleach out visible staining, GK Concentrated Fungicidal Wash kills organisms at the cellular level, preventing rapid regrowth.

• Internal & External Use: Versatile formulation suitable for both internal mould treatment (bathrooms, kitchens, basements, damp areas) and external fungal growth removal (render, brickwork, walls, fences, outbuildings). One product addresses all pre-decoration biological contamination challenges throughout your property or project.

• Minimises regrowth risk: Beyond immediate cleaning, GK Concentrated Fungicidal Wash creates an environment hostile to biological recolonisation. The biocidal treatment significantly extends the interval before regrowth occurs, protecting your decoration investment and reducing maintenance frequency. Treated surfaces remain biologically clean for extended periods compared to untreated or simply cleaned areas.

• Acid and bleach free: Acid-free and bleach-free formulation won't damage, etch, or discolour underlying materials. Safe for use on render, pebbledash, brick, concrete, stone, masonry, painted surfaces, UPVC, timber, and all common building materials.

Coverage Rates

1L will treat 40 square metres

Application Guidelines

Surface Preparation: Remove dirt, grease, and loose coatings. Scrape off mosses, lichens, mold, 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.

Storage

Store in the original unopened container in a clean, dry
area for up to 24 months from the date of manufacture. Do not store below 5⁰C.

Technical Data Sheets

Product FAQs

Will this kill garden plants close to the wall?

If used as instructed no. However please be careful, accidental overspray onto plants can scorch foliage but should not kill your plants. If plants are in the vicinity, before applying GK CFW, we recommend watering well and covering with a waterproof fleece. If you notice an accidental overspray during treatment rinse of thoroughly with water.

What’s the best way to apply the solution, sponge, roller?

GK CFW is very forgiving, as long as you follow the dilution instructions and saturate the surface you can even apply with a watering can, with a garden pump sprayer, paint brush, sponge, trigger spray or roller whichever suits.

Can this be applied in wet conditions?

Apply the product in dry conditions.

Can this be used on KREND?

Yes. Because it only attacks living bacteria it has no impact on the substrate material to which it’s being applied.

Can I use this on pebble dash?

Yes, CFW is safe to use on all substrates, although we do like the surface to be saturated so coverage may not be as great as that of scratch render.

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