Extreme Clean Patio Cleaner High Strength Sodium Hypochlorite 5.0 kg

Q: How does Extreme Clean Patio Cleaner work on black spot lichen?

The high-strength 14–15% sodium hypochlorite formula penetrates deep into the porous surface of patios and driveways, breaking down black spot lichen cells within minutes. This chemical reaction lifts stubborn stains without excessive scrubbing, leaving a cleaner, brighter finish after rinsing.

Q: Can this patio cleaner be used on natural stone surfaces?

Yes, it is effective on concrete, sandstone, limestone, slate, and brickwork when properly diluted. However, always test a small, inconspicuous area first to check for any colour change, as bleach-based products may slightly lighten certain delicate stones.

Q: Is it safe for block paving and driveway use?

Check compatibility and test an inconspicuous area first. Extreme Clean Patio Cleaner is intended to remove moss, algae, and grime from block paving and concrete driveways with minimal effort. Pre-wetting nearby plants and grass and rinsing thoroughly after treatment will help prevent accidental bleaching of surrounding landscaping.

Q: Can I use Extreme Clean Patio Cleaner on wooden fences and decking?

The solution can be used on timber fences to remove mould, algae, and mildew, but it should be applied carefully and thoroughly rinsed to avoid long-term bleaching of the wood grain. Decking should be treated with extra caution and tested on a small patch first.

Q: Is it suitable for roof tiles and gutter cleaning?

Yes, this cleaner is widely used on roof tiles, render, and gutters to kill moss and algae. Always ensure safe roof access and avoid application during rain or strong wind to prevent splashing onto plants or windows.

Q: Can this product be used as a swimming pool chlorine treatment?

Extreme Clean Patio Cleaner doubles as a liquid chlorine source for pool water treatment when correctly diluted. Follow pool chemical guidelines carefully to maintain safe chlorine levels and never mix with other pool chemicals directly.

Q: How quickly does the product show visible results?

The linked sheet specifies a 10–15-minute contact time; follow the supplied label and do not allow the cleaner to dry. Results depend on the surface and contamination. Heavy black spot or deeply ingrained organic growth may require a second treatment after 24 hours to achieve a fully restored appearance.

Q: Will it harm surrounding grass, plants, or soil?

The bleach content can burn grass or plants if left in contact. Always pre-wet surrounding areas and follow the product's vegetation-protection and disposal guidance. Rinsing dilutes residues; it does not chemically neutralise runoff. Prevent release to drains and waterways.

Q: How often should I apply this cleaner for best results?

Routine maintenance once or twice per year keeps patios, driveways, and outdoor walls free of algae and moss. Regular cleaning helps prevent black spot from re-establishing and reduces the need for heavy scrubbing in the future.

Q: What is the recommended dilution ratio for different cleaning needs?

The linked product sheet specifies 1 part cleaner to 3–6 parts water. Follow the supplied label for the task and surface; do not assume neat application is appropriate.

Manufactured by Extreme Clean

Why Choose Our Products?

Concentrated sodium hypochlorite cleaner for compatible exterior hard surfaces

Supplied strength 14–15%

as stated in the linked product sheet

10L and 20L pack choices

Follow the label and sheet for dilution and contact time

Test surface compatibility and protect surrounding materials

Wear specified PPE and prevent release to drains and waterways

Extreme Clean Sodium Hypochlorite Patio Cleaner is a concentrated, bleach-based cleaner supplied at 14–15% sodium hypochlorite strength for compatible exterior hard surfaces. It is intended for patio and paving cleaning, including areas affected by algae, moss and lichen.

Check the surface material and label before use, and test an inconspicuous area for colour change. The linked product sheet specifies dilution of 1 part cleaner to 3–6 parts water; follow the supplied label for your job. Concentrated strength is not a reason to use it neat.

Available in 5L, 10L and 20L packs. Read the patio cleaning and sealing guide, or compare the patio-cleaner range.

Handling: the linked sheet identifies severe skin burns/eye damage and toxicity to aquatic life. Wear the specified protective equipment, avoid release to drains and waterways, and never mix with acids or other cleaning products. Keep children and pets away until the area is fully rinsed and dry, following the label and safety sheet.

Choose a Compatible Surface

For compatible patios, block paving, concrete and other exterior hard surfaces identified on the supplied label. Check natural stone, coatings and neighbouring materials before treatment. Do not assume compatibility with every stone, metal, timber or painted surface.

Sizes & Coverage

5 L: Up to 50 m² (Routine), ≈ 25 m² (Heavy), follow the label for dilution
10 L: Up to 100 m² (Routine), ≈ 50 m² (Heavy), follow the label for dilution
20 L: Up to 200 m² (Routine), ≈ 100 m² (Heavy), follow the label for dilution

Coverage varies based on surface porosity and contamination levels.

Storage & Handling

Store securely in a cool, dry, ventilated place, away from heat and flames.
Always keep the container sealed between uses.
Do not mix with acids, other cleaners, or detergents.

Dilution

The linked sheet specifies 1 part cleaner to 3–6 parts water. Follow the supplied product label and confirm surface compatibility.

Safety Disclaimer

Extreme Clean Patio Cleaner is a chlorine-based chemical. Use with caution:

Always wear protective gloves, goggles, and old clothing.
Avoid inhalation of vapours and prevent contact with skin or eyes.
If contact occurs, rinse immediately with clean water and seek medical advice if irritation persists.
Keep away from pets and children until surfaces are rinsed and dry.
Dispose of waste in line with local environmental regulations.
Refer to the Safety Data Sheet (SDS) for complete guidance.

Note:However, please bear in mind on some occasions the packaging may arrive slightly damaged. Please do not order if you won't be satisfied with this.

Extreme Clean Patio Cleaner with High Strength is a versatile outdoor cleaning solution that delivers fast-acting results on various surfaces. It is designed for domestic and commercial use where stubborn contamination must be removed quickly and effectively.

Patios & Driveways: eliminates moss, black spot lichen, algae, and mildew from concrete, paving slabs, and block paving.
Walls & Fences: restores brick, render, and timber fencing by removing mould, mildew, and organic growth.
Roofs & Gutters: suitable for cleaning roof tiles and guttering, reducing moss and algae build-up.
Swimming Pools & Surrounds: doubles as a chlorine treatment for pools and disinfects poolside paving.
Outdoor Hardscapes: cleans steps, walkways, courtyards, and external stonework, improving safety and aesthetics.
Commercial Premises: ideal for sanitising outdoor seating areas, public courtyards, and high-traffic hardscapes.

Application Instructions

1. Safety Precautions

Always wear protective gloves, goggles, and old clothing.
Keep children and pets away until the treated surface is fully rinsed and dry.
Pre-wet surrounding grass, flowerbeds, or shrubs to protect from splash damage.

2. Dilution Guidelines

Routine cleaning: the linked sheet specifies 1 part cleaner to 6 parts water; follow the supplied label.
Heavy cleaning: the linked sheet specifies 1 part cleaner to 3 parts water; follow the supplied label and test compatibility.
For deep staining, follow the supplied label; the linked sheet specifies dilution, so do not assume neat application is appropriate.

3. Application Method

Apply using a watering can, garden sprayer, or stiff brush.
Ensure even coverage across the surface. Do not apply during rainfall or direct hot sun.
For vertical surfaces (walls/fences), start from the bottom and work upward to prevent streaking.

4. Dwell Time

The linked sheet specifies 10–15 minutes; follow the supplied label and do not allow the cleaner to dry.
Do not allow the cleaner to dry on the surface. Mist lightly with water if needed.

5. Agitation & Rinsing

For ingrained dirt or lichen, agitate with a stiff outdoor brush.
Rinse thoroughly with a garden hose or pressure washer until runoff is clear.
Protect vegetation and prevent runoff entering drains and waterways. Follow the label and safety sheet for accidental contact; water rinsing does not chemically neutralise residues.

6. Repeat Treatments

Severe black spot infestations may require a second application after 24 hours.
Inspect and clean as needed; maintenance frequency varies and regrowth prevention is not guaranteed.

7. Clean-Up

Rinse equipment (watering cans, sprayers, or brushes) thoroughly with clean water after use.
Store product in a sealed container, away from direct heat and sunlight.

Property	Value
Chemical name	Sodium Hypochlorite solution
Available chlorine	14–15%
pH (neat)	> 12
CAS number	7681‑52‑9
Appearance / Odour	Pale yellow liquid / strong bleach smell
Shelf life	6 months (store < 24 °C, out of sunlight)

Property	Value
VOC	0 g/L
Containers	UN-approved HDPE (5 L, 10 L, 20 L)

DATA SHEETS AND PRODUCT FILES

Below are all the product files available for this coating. If you require any further information on this product, please email us at support@tradesuppliesuk.co.uk and one of our team will be happy to help.

FILES AND DATA SHEETS

MSDS - Material Safety Data Sheet

COVERAGE CALCULATOR

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Frequently Asked Questions

How does Extreme Clean Patio Cleaner work on black spot lichen?

The high-strength 14–15% sodium hypochlorite formula penetrates deep into the porous surface of patios and driveways, breaking down black spot lichen cells within minutes. This chemical reaction lifts stubborn stains without excessive scrubbing, leaving a cleaner, brighter finish after rinsing.

Can this patio cleaner be used on natural stone surfaces?

Yes, it is effective on concrete, sandstone, limestone, slate, and brickwork when properly diluted. However, always test a small, inconspicuous area first to check for any colour change, as bleach-based products may slightly lighten certain delicate stones.

Is it safe for block paving and driveway use?

Check compatibility and test an inconspicuous area first. Extreme Clean Patio Cleaner is intended to remove moss, algae, and grime from block paving and concrete driveways with minimal effort. Pre-wetting nearby plants and grass and rinsing thoroughly after treatment will help prevent accidental bleaching of surrounding landscaping.

Can I use Extreme Clean Patio Cleaner on wooden fences and decking?

The solution can be used on timber fences to remove mould, algae, and mildew, but it should be applied carefully and thoroughly rinsed to avoid long-term bleaching of the wood grain. Decking should be treated with extra caution and tested on a small patch first.

Is it suitable for roof tiles and gutter cleaning?

Yes, this cleaner is widely used on roof tiles, render, and gutters to kill moss and algae. Always ensure safe roof access and avoid application during rain or strong wind to prevent splashing onto plants or windows.

Can this product be used as a swimming pool chlorine treatment?

Extreme Clean Patio Cleaner doubles as a liquid chlorine source for pool water treatment when correctly diluted. Follow pool chemical guidelines carefully to maintain safe chlorine levels and never mix with other pool chemicals directly.

How quickly does the product show visible results?

The linked sheet specifies a 10–15-minute contact time; follow the supplied label and do not allow the cleaner to dry. Results depend on the surface and contamination. Heavy black spot or deeply ingrained organic growth may require a second treatment after 24 hours to achieve a fully restored appearance.

Will it harm surrounding grass, plants, or soil?

The bleach content can burn grass or plants if left in contact. Always pre-wet surrounding areas and follow the product's vegetation-protection and disposal guidance. Rinsing dilutes residues; it does not chemically neutralise runoff. Prevent release to drains and waterways.

How often should I apply this cleaner for best results?

Routine maintenance once or twice per year keeps patios, driveways, and outdoor walls free of algae and moss. Regular cleaning helps prevent black spot from re-establishing and reduces the need for heavy scrubbing in the future.

What is the recommended dilution ratio for different cleaning needs?

The linked product sheet specifies 1 part cleaner to 3–6 parts water. Follow the supplied label for the task and surface; do not assume neat application is appropriate.

Is Extreme Clean Patio Cleaner safe to use near pets or children?

Keep pets and children away from treated areas until the surface has been thoroughly rinsed and completely dry. Follow the product label and safety sheet; drying alone is not proof that no chemical residue remains.

What safety precautions should I take during application?

Wear protective gloves, goggles, and old clothing to protect against splashes. Avoid breathing vapours and never mix this product with acids or other cleaners, as dangerous chemical reactions may occur.

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Product variants

Extreme Clean Patio Cleaner High Strength Sodium Hypochlorite 5.0 kg