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Brickwork cleaning

Different types of brick stains require specific cleaning methods to avoid damaging the brickwork. It is crucial to identify the source of the discolouration before starting, and to test any cleaning solution on a small, inconspicuous area first

. A mild detergent with a stiff nylon brush is the safest starting point for general dirt and grime. 

General cleaning

For standard dirt, grime, and atmospheric pollution, start with the gentlest approach. 

• Method: Mix a mild detergent with warm water. Using a stiff-bristled brush (never wire), scrub the brickwork in sections. Rinse thoroughly with a hose, using a gentle spray setting to avoid pushing water deeper into the porous brick.
• For tougher grime: You can use a power washer on a low-pressure setting and at a distance, as long as the bricks are new and in good condition. High pressure can damage older or softer bricks and their mortar joints. 

Removing efflorescence (white, powdery residue)

This common issue is caused by salts that dissolve in water and are left behind as the moisture evaporates. It is generally harmless and often weathers away over time. 

• Method: For removal, start by dry-brushing the salt deposits with a stiff nylon brush. For persistent marks, a damp sponge can be used sparingly, but avoid over-saturating the area, which can cause more salts to surface.
• Chemical option: A brick acid cleaner can be used for tough efflorescence, but always pre-wet the brick, follow the instructions carefully, and wear appropriate protective gear. 

Cleaning organic growth (moss, algae, lichen)

These growths thrive in damp, shaded areas. Address the source of the dampness if possible. 

• Method: Scrape or brush off loose growth first. Apply a surface biocide or fungicidal cleaner to kill the remaining organic matter at the root. Apply during dry weather for best results.
• Alternative: A solution of vinegar and water or a diluted bleach solution can also be effective. 

Removing mortar and cement stains

Fresh mortar is best removed after it has hardened slightly, using a wooden tool to avoid scratching the brick face. 

• Method: For smears and deposits, use a specialist cement cleaning product, which is often hydrochloric-acid-based. Follow the directions carefully, pre-wet the brickwork, and rinse thoroughly. 

Removing paint

Paint removal is a complex process and is often best handled by a professional, as the method depends on the paint type and the age of the brick. 

• Method: For fresh paint, blot up as much as possible before using a solvent and washing with detergent. For dry paint, carefully scrape it off before applying a paint remover suitable for masonry. 

Important precautions

• Avoid wire brushes: Metal tools can damage the brick face and leave behind metallic particles that can cause rust stains.
• Test first: Always test a cleaning method on a small, inconspicuous area to ensure it will not damage or stain the brick.
• Protect yourself: When using chemical cleaners, always wear personal protective equipment (PPE) such as gloves and goggles.
• Watch the weather: Avoid cleaning in freezing conditions. The water in the bricks can freeze, expand, and cause damage.
• Rinse thoroughly: Always rinse the cleaned area completely to prevent chemical residue from causing further damage or staining. 

Covering all BH, DT & SO postcodes including Wimborne, Broadstone, Corfe Mullen, Sandford, Wareham, Swanage, Weymouth, Bridport, Dorchester, Blandford, Spetisbury, Sturminster Marshall, Lytchett Matravers,  Poole, Bournemouth, Christchurch, Ringwood, Verwood, Ferndown, West Moors, New Forest, Highcliffe, New Milton, Lymington, Burley, Brockenhurst, Lyndhurst, Fordingbridge, Downton, Salisbury, Totten, Romsey, Southampton.