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Sodium Hypochlorite Patio Cleaner 14-15% Grade

Sodium Hypochlorite Patio Cleaner 14-15% Grade

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Next Day Free Shipping is available to UK Customers Only
20.00 KGS
Free Shipping
Patio Cleaner / Pool Chlorine
Chemical Name:
Sodium Hypochlorite 14-15%
CAS Number:
UN Approved Sealed
£20.89 (Inc. VAT)
£17.41 (Ex. VAT)

Sodium Hypochlorite Patio Cleaner 14-15% | Block Paving Cleaner

Sodium Hypochlorite patio cleaner is the quick and easy long term solution to cleaning your drive, patio, walls, fences and brickwork. Sodium Hypochlorite patio cleaner is the worldwide number one product to use, and is commonly found in dilution in various other versions of patio cleaners. The Sodium Hypochlorite Solution we have available is highly concentrated and will remove the need for numerous applications, one treatment will provide a clean surface immediately.

Sodium hypochlorite patio cleaner is a chemical compound with the formula NaClO. It is composed of a sodium cation (Na+) and a hypochlorite anion (ClO−); it may also be viewed as the sodium salt of hypochlorous acid. When dissolved in water it is commonly known as bleach or liquid bleach. Sodium hypochlorite is practically and chemically distinct from chlorine. Sodium hypochlorite is frequently used as a disinfectant or a bleaching agent.

Sodium Hypochlorite Uses

  • Swimming Pools
  • Patio Cleaner
  • Bleaching Agent
  • Water Purification
  • Odour Removal
  • Lab Use
  • Specification and Material Safety Data Sheet are available upon request.
  • Packaging may be 4 x 5 Litre depending on stocking level.

How to Use Sodium Hypochlorite Patio Cleaner

Sodium Hypochlorite Patio Cleaners are used for more stubborn stains as you need the EXTRA strength solution, which is 50% stronger than the heavy duty solution and may be diluted with up to 6 parts water and 1 part Sodium Hypochlorite 15%.

To use Sodium Hypochlorite Patio Cleaner you can apply the solution and leave and within minutes you will begin to see results. Take the hard work out of cleaning your drive, block paving, fences, walls, brick work, stonework, paths, patios decking, gravelled areas and even roofs.

Use neat to shift old and stubborn deposits or dilute for routine maintenance. Even when diluted Sodium Hypochlorite still outperforms the rest* and can treat up to 10m² per litre. Spruce up the grounds around your home this Spring and make your home the envy of your neighbours.

Important Notes:
- This product is not for use on lawns, flowerbeds, vegetable plots or around trees and shrubs.
- Keep people and pets away from the treated area for 2 days.

Cleaning a patio with sodium hypochlorite (also known as bleach) can be an effective way to remove dirt, grime, and stains. However, it's important to use the proper safety precautions and techniques to avoid damage to the patio or harm to yourself or others.

Here are the steps to clean a patio using sodium hypochlorite:

  • Wear protective clothing and gear: Before handling sodium hypochlorite, put on long sleeves, pants, gloves, and goggles to protect your skin and eyes.
  • Wet the patio: Use a garden hose or pressure washer to wet the patio thoroughly.
  • Apply the bleach solution: Pour the bleach solution onto the patio, starting at one end and working your way across. Use a brush or broom to spread the solution evenly and scrub any stubborn stains.
  • Let the solution sit: Allow the bleach solution to sit on the patio for 10-15 minutes. This will give it time to break down any dirt and grime.
  • Rinse the patio: Use the garden hose or pressure washer to rinse off the bleach solution, starting at the opposite end from where you applied it. Be sure to rinse thoroughly to remove all traces of bleach.
  • Let the patio dry: Allow the patio to air dry completely before using it.
  • Note: Always follow the manufacturer's instructions when handling sodium hypochlorite, and never mix it with other chemicals or cleaners. Also, be sure to protect any nearby plants or vegetation from the bleach solution, as it can be harmful to them.

In general the following precautions should be taken:

  • When using chemicals, protective clothing such as gloves, goggles, boots and overalls should be worn.
  • How long to leave sodium hypochlorite on patio?  Within minutes you will begin to see the results.  We recommend leaving no longer than 3 hours.
  • Sodium hypochlorite dilution for cleaning patios?  We recommend to start a 50/50 solution with water, increasing if required.
  • Adequate ventilation is required when using chemicals in confined spaces.
  • When using flammable materials; cigarettes, naked flames and other sources of ignition should be carefully controlled.
  • When diluting acids, always add acid to water and not water to acid.
  • Any clothing that is contaminated with chemicals should be disposed of safely.
  • When using any chemicals, care must be taken not to damage, contaminate or stain any adjoining materials, landscaping or finishes.
  • Care must be taken to protect personnel operating in the area of the cleaning from any injury or hazard created by the cleaning. The appropriate First Aid must be available.
  • Before undertaking any cleaning operation, a trial should be carried out on a small, preferably inconspicuous area, to determine the effect of the chemicals before treating a large area.

Sodium Hypochlorite Storage Requirements - Always store this product in a cool dry (below 24 deg C) location that is away from children and animals.  Warm and exposed to sunlight conditions will have an adverse reaction to the product as the chlorine will vent naturally.

Material Safety Data Sheet - Download

Guidance for using Sodium Hypochlorite - Pool Chlorine

Sodium Hypochlorite 15% is used for the routine control of bacteria in swimming pools.  For effective treatment ensure that the chlorine levels of the water are a level of 2-3mg/l (ppm).  The levels must be maintained above 1.5mg/l (ppm) as a minimum.  Once the chlorine has been applied the pH of the water must be adjusted to between 7.2 and 7.6 before use.  We recommend these levels are routinely checked by using a pool water testing kit.  When applying the Chlorine add at the point of best mixing, i.e. the water inlets and leave the filter running to ensure even distribution.  All personal protective equipment must be used when handling this product.

Sodium Hypochlorite 15% Liquid Chlorine Routine Dosage rates
Water Capacity in Gallons
Water Capacity in Cubic Metres
Routine Dose
Shock Dose
1.63 ltr
2.44 ltr
3.25 ltr
6.50 ltr

Private Labels

Chemiphase Ltd offer 'private' label services which incorporates having your requested products manufactured and branded as your own under strict ISO 9001 procedures, ensuring the highest quality products.  All products manufactured at the plant can be labelled with your choice of company name, logo, contact details and delivered direct to site with product data sheets displaying your details and company logo.

All chemical products manufactured at Chemiphase Ltd are delivered with the  appropriate safety labels required by UK, EU and international transport and hazard regulations. 

Free Shipping Information for UK Customers

Carriage to a UK Mainland address and VAT is already included in the price.  Some types of chemicals are classified as hazardous and as such will be sent on a overnight carrier.  A signature will be required on delivery.  Once your order has been placed and the product has been shipped, you will be sent an email and text message with the tracking information included which will allow you to track the item and adjust if required.

122 Reviews
  • 5
    Sodium hypochlorite

    Posted by Steve on 14th May 2024

    Fantastic stuff, makes cleaning your patio and walls easy.

  • 5

    Posted by HARRISON on 8th May 2024


  • 4
    Sodium Hypochlorite

    Posted by on 7th May 2024

    Have used this product many times to clean my sandstone patio and block paving driveway. Works very well and also used to keep the weeds down on the driveway. Excellent service from Chemiphase. Ordered and delivered within 36hrs.

  • 5
    Sodium Hypochlorite 14-15%

    Posted by Hugh Wilson on 3rd May 2024

    Excellent delivery service, securely packaged. Product works very well on a stained patio and effectively removes black spot.

  • 5
    Patio cleaner - Sodium Hypochlorite

    Posted by Sam W on 18th Apr 2024

    Excellent results. I followed the instructions on the website and it did live up to all the claims leaving a very stained and grubby stone patio like it looked on day 1. .

  • 5

    Posted by Rita Millhouse on 8th Apr 2024

    Takes the hard work out of patio cleaning

  • 5
    patio cleaner

    Posted by on 4th Apr 2024

    excellent product ,first class delivery service, would recommend.

  • 5
    Patio Cleaner

    Posted by ALH on 1st Mar 2024

    First checked chosen areas for colour fastness to ensure that the product was not going to damage the natural stone patio.

    Diluted this 2 litres of sodium hypochlorite with 8 litres of water and used a back pack sprayer to treat a heavily greened patio. Thoroughly wetted all affected areas. The impact is nothing short of miraculous. The stone slabs have come up as new with all of the original subtle colours and tones now being visible again. Massively impressed. Could probably have diluted the product even more (the impact was almost instant) but wanted to make sure on this first use that the desired result was achieved rather than to stretch the product to the max (the product is keenly priced as well so less important to me). Was careful near the grassed edges but to date, no die back has been observed. Not power washed the area as I don’t think it needs it though I might visit areas where “carpet textured green” was previously present to remove the dead residue.

    Try it as you will be amazed.

  • 5
    Sodium Hypochlorite

    Posted by Peer on 12th Nov 2023

    I have used this product a number of times to clean my concrete block paving and sandstone patios - it is brilliant on both bringing back the colour and so easy to use

All products manufactured by Chemiphase are developed under strict ISO 9001 conditions. Chemiphase work with industry worldwide delivering practical, cost effective solutions to resolve complex problems. If you require technical assistance, or information about our products, please contact our dedicated technical support team on: +44 (0) 1704 894808 or complete our Technical Support form.