How to Clean Your Patio and Get It Ready for Outdoor Living

A clean patio can transform an outdoor space, making it look brighter, safer and more inviting. However, exposure to damp weather, shade and everyday outdoor use can leave patios covered in dirt, algae, mould, lichen and other unwanted growth.

Whether you are searching for the best patio cleaner, wondering how to remove green algae from paving slabs or looking for a simple way to clean a patio without a pressure washer, this guide explains the main methods available.

We will cover how to prepare your patio, compare different patio cleaning methods and help you choose the right Wet & Forget product for your outdoor space.

How to Prepare for Patio Cleaning

1. Clearing the Patio Area

Before you begin patio cleaning, remove any furniture, pots, outdoor rugs, and accessories from the area. This gives you full access to the surface and helps prevent accidental splashes or staining while cleaning.

Taking a few minutes to create a clear patio will make the cleaning process quicker and more effective while giving your chosen patio cleaner better access to the entire surface.

2. Sweep Away Dirt and Debris

Use a stiff outdoor brush to sweep away loose dirt, leaves and debris before cleaning your patio or paving slabs. Remove weeds and built-up dirt from paving joints using a scraper or suitable edging tool where necessary.

Sweeping first prevents loose soil and leaves from mixing with water to create mud. It also allows the patio cleaner or cleaning solution to come into direct contact with the surface.

This preparation is particularly important when cleaning a patio with a pressure washer, as the water can spread loose grit and debris across the surrounding area, potentially causing scratches or damage to paving slabs, natural stone, and other outdoor surfaces.

3. Protect Surrounding Plants and Surfaces

Before applying a patio cleaner, check the surrounding area for plants, lawns, painted surfaces, untreated wood, garden furniture and decorative features that may need protecting.

Cover vulnerable areas where appropriate and try to control overspray during application. Always read the product label before use, as application instructions and precautions can vary between patio cleaning products.

4. Check the Weather Forecast Before Cleaning Your Patio

If you're planning to clean a patio, checking the weather forecast could help you achieve better results. Many homeowners assume a hot, sunny day is the perfect time for patio cleaning, but weather conditions can have a significant impact on effectiveness.

Heavy rain soon after application may dilute or wash away some treatments before they have had sufficient contact with the surface. Very warm conditions may also cause certain solutions to dry more quickly than intended.

For the best results, choose a mild, dry day and avoid treating your patio when heavy rain is forecast. A suitable weather window allows your treatment to remain in contact with the surface for longer, helping to break down green algae and staining more effectively.

What's the Best Way to Clean a Patio?

The best way to clean a patio depends on the condition of the surface, the size of the area and how much scrubbing or equipment you want to use.

Cleaning with a Patio Brush and Soapy Water

Cleaning with a stiff patio brush, warm water and a small amount of mild detergent is a traditional option for removing light dirt and everyday surface build-up.

After preparing the patio, apply the soapy water to a manageable section. Scrub the surface with a stiff brush, paying particular attention to paving joints, corners and heavily used areas. Rinse thoroughly with clean water once you have finished.

This method is inexpensive and requires very little equipment. It can work well for routine cleaning and lightly marked patios.

However, cleaning a patio with soapy water can be physically demanding and time-consuming. Soapy water may remove loose dirt and surface grime, but it is unlikely to provide the same results against established algae, lichen, mould or stubborn staining.

Cleaning with a Pressure Washer

A pressure washer is another popular patio-cleaning method and can act as an effective algae remover. It uses a concentrated jet of water to lift dirt, mud and visible surface build-up. It can cover a large patio more quickly than manual scrubbing and may deliver an immediate visual difference.

Once you have prepared the area, connect the pressure washer and begin cleaning in manageable sections, working steadily across the surface rather than holding the jet in one place for too long. Keep the nozzle moving and avoid using excessive pressure on delicate paving, natural stone, or older patio surfaces.

A pressure washer is a popular choice for patio cleaning because it can quickly remove dirt and green algae from large patios and paving slabs, with less effort than manual scrubbing.

However, while a pressure washer removes surface dirt and growth, it may not tackle the underlying problem. Algae, mould, lichen and black spots can remain in the pores of paving and return over time, especially in damp or shaded areas.

Pressure washing can remove jointing sand between paving slabs, create extra clean-up and damage delicate surfaces if used incorrectly. The equipment can also be expensive to buy or hire, making it less cost-effective for occasional patio cleaning. Extra care is needed on Indian sandstone patios, natural stone paving and older patio surfaces.

For longer-lasting results, consider how quickly the problem returns. Pressure washing removes visible growth, but algae and other organic growth can gradually reappear, leading to repeated patio cleaning.

If you're looking for the best patio cleaner without a pressure washer, or an easier way to remove green algae from a patio, specialist patio cleaning products can treat organic growth more deeply and reduce the need for frequent pressure washing.

Cleaning with a Homemade Solution

Some homeowners use diluted white vinegar or bicarbonate of soda mixed with warm water as a homemade patio cleaning solution.

If you choose this approach, test the mixture on a small, discreet area first to check how the surface reacts. Apply it to a manageable section, allow it to sit briefly and then scrub the area with a stiff patio brush. Rinse the patio thoroughly to remove any remaining solution or residue.

Homemade patio cleaners can be inexpensive and convenient for light cleaning or small touch-ups. However, results can be inconsistent, and not every homemade mixture will be suitable for every outdoor surface.

Homemade methods also tend to require considerable scrubbing and may be less effective against established algae, mould, lichen and deeper outdoor staining than a product specifically developed for exterior cleaning.

A Simple Way to Clean Your Patio

While the methods above are commonly used, they often involve scrubbing, rinsing or specialist equipment. If you're looking for a simpler approach, Wet & Forget offers an easy alternative.

Wet & Forget Mould, Lichen & Algae Remover is a simple outdoor cleaning solution designed to remove mould, lichen and algae from patios and other exterior surfaces. Unlike traditional patio cleaning methods, it does not require pressure washing, rinsing or intensive scrubbing. Instead, the formula is applied to the surface and left to work over time, helping to break down organic growth while weathering gradually lifts it away.

One of the main reasons homeowners choose Wet & Forget is that it offers a low-effort way to treat mould, lichen, and algae. Its key benefits include simple spray-and-leave application, no scrubbing or rinsing required, and long-lasting results that continue to improve as wind and rain help clear the treated surface over time. It is also suitable for a wide range of outdoor surfaces, making it a practical option for patios, paving, driveways, and other exterior areas.

How Long Does It Take to Clean a Patio?

How long it takes to clean a patio depends on the method used. Cleaning with a patio brush and soapy water can take several hours on larger patios, while pressure washing is faster but still involves setup and clearing up. Wet & Forget can be applied in as little as 10 minutes, with no scrubbing, rinsing or pressure washing required. It then works gradually, with results continuing to improve over time.

Which Wet & Forget Patio Cleaner Is Right for Me?

Wet & Forget comes in three application formats, each designed to remove mould, lichen and algae with the same effective results. The best option depends on your patio size, available equipment and whether you prefer greater control or convenience. Unlike many patio cleaning solutions, Wet & Forget is bleach-free and contains no harsh chemicals, making it safe to use on outdoor surfaces without causing damage or discolouration when used as directed.

Wet & Forget Concentrate Mould, Lichen & Algae Remover

For larger patios, paths and driveways where you want maximum coverage and greater control over application, Wet & Forget Concentrate is a strong choice.

The concentrated formula is diluted 1:5 with water and applied using a garden sprayer. Because you mix the solution yourself, you can prepare the amount you need and apply it evenly across larger outdoor surfaces.

It is particularly useful if you regularly clean larger areas and want a cost-effective format with flexible application, while still benefiting from Wet & Forget’s spray-and-leave approach.

Wet & Forget Rapid Application

For larger outdoor areas where speed and convenience are the priority, Rapid Application removes the need for measuring, mixing or preparing a separate garden sprayer.

Simply connect the bottle to a garden hose and spray. The built-in applicator mixes the solution as you work, helping you cover broad areas such as patios, driveways and paths quickly and evenly.

Rapid can cover up to 200m² in around 10 minutes and can spray up to 8 metres, making it especially useful for larger areas and surfaces that are more difficult to reach.

Wet & Forget Ready To Use

For smaller jobs, isolated patches and quick touch-ups, Wet & Forget Ready To Use offers the simplest application.

The formula is already mixed and comes with its own trigger sprayer, so there is no measuring, dilution or additional equipment required. Simply pick up the bottle, spray the affected area and leave the product to work.

It is ideal for areas such as patio edges, steps, paving corners and smaller patches of mould, lichen or algae that do not require a full patio treatment.

For larger areas, the Concentrate or Rapid Application formats will usually provide more suitable coverage.

Which Product is Right for My Patio?