Sika 404 Fungicidal Wash 1L
Sika 404 Fungicidal Wash 1L – Mould, Algae & Fungi Remover for Interior & Exterior Surfaces
Product Name: Sika 404 Fungicidal Wash
Volume: 1 Litre
Boxed Weight: 1.1 kg
Appearance: Clear liquid
Type: Fungicidal and biocidal surface treatment
Manufacturer: Sika
Product Overview
Sika 404 Fungicidal Wash is a powerful surface treatment specially formulated to eliminate mould, algae, fungi, and lichen growth on interior and exterior surfaces. It not only removes biological contamination but also prevents future regrowth, making it an essential first step before painting or decorating.
Suitable for use on a wide range of materials, this easy-to-apply treatment is ideal for walls, patios, roofs, tiles, render, plaster, concrete, and more. It leaves surfaces clean, treated, and ready for finishing.
Key Features and Benefits
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Effective Treatment – Kills mould, algae, fungi, and lichen at the source.
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Prevents Regrowth – Helps prevent future biological contamination.
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Versatile Use – Suitable for both interior and exterior surfaces.
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Surface Safe – Suitable for plaster, render, wood, masonry, concrete, tiles, and painted surfaces.
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Simple Application – Can be brushed or sprayed directly onto affected areas.
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Essential Surface Preparation – Ideal for use prior to decorating or repainting.
Ideal For
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Interior and exterior walls and ceilings
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Render, stucco, and pebble dash
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Concrete and brickwork
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Roofs and patios
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Tiled and painted surfaces
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Garage, conservatory, or basement walls
Technical Specifications
Attribute | Details |
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Product Name | Sika 404 Fungicidal Wash |
Volume | 1 Litre |
Boxed Weight | 1.1 kg |
Form | Liquid |
Colour | Clear |
Coverage | Up to 5 m² per litre (depending on surface porosity) |
Drying Time | 24 hours before repainting or further treatment |
Application Method | Brush, roller, or low-pressure spray |
Dilution | Use neat – no dilution required |
Storage Life | 12 months unopened |
Application Instructions
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Preparation:
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Remove any loose material or heavy surface debris using a stiff brush.
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Ensure the surface is dry for best results.
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Application:
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Apply neat (undiluted) with a brush, roller, or low-pressure sprayer.
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Saturate the surface thoroughly.
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Leave the product to soak in and take effect.
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Treatment Time:
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Leave for 24 hours to ensure full biocidal action.
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Repeat if contamination is severe or persistent.
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Aftercare:
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Rinse the surface with clean water or allow natural weathering.
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Once dry, the area can be painted or treated with other coatings.
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Safety & Environmental Information
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Biocidal product – use only as directed.
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Always wear gloves and eye protection.
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Keep out of reach of children and pets.
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Avoid contact with plants and watercourses – rinse overspray thoroughly.
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Refer to the Safety Data Sheet (SDS) for full handling and environmental guidance.
Frequently Asked Questions (FAQ)
Q1: Can I paint over the surface after using Sika 404?
A: Yes. Wait at least 24 hours after application to ensure the surface is clean and dry before painting.
Q2: Is this suitable for use on painted surfaces?
A: Yes. It can be used on most sound painted surfaces to remove biological growth prior to repainting.
Q3: Will it damage my plants or grass?
A: Avoid overspray on vegetation. Rinse nearby plants or turf immediately if contact occurs.
Q4: How long does it protect against regrowth?
A: Sika 404 helps inhibit regrowth for several months, but protection duration depends on environmental conditions.
Q5: Is this suitable for indoor use?
A: Yes. It is suitable for interior walls and ceilings affected by mould or mildew. Ensure good ventilation during and after use.
Q6: Do I need to scrub after application?
A: In many cases, no scrubbing is needed. However, stubborn or thick contamination may benefit from a light scrub post-treatment and rinse.
Why Choose Sika 404 Fungicidal Wash?
Trusted by professionals and DIY users alike, Sika 404 Fungicidal Wash offers a reliable, fast-acting solution for removing mould, algae, and fungal growth on a wide variety of building surfaces. Whether preparing a wall for repainting or cleaning a patio plagued by algae, this product ensures a clean, sanitised base that is protected against future contamination.