How to Clean Bricks

Bricks are sturdy and timeless, but over time they can get covered in dirt, moss, paint splashes, or leftover mortar. Knowing how to clean brick correctly helps keep them looking fresh and prevents further damage.

This guide will walk you through everyday brick cleaning, as well as tips on how to remove brick paint and how to clean mortar off bricks without causing harm.

Bricked houses in a neighbourhood. Bricks can be easily cleaned, making them low-maintenance.

Why brick cleaning matters

Bricks are porous, which means they absorb moisture and grime easily. Regular cleaning keeps them looking good and helps maintain the structure. Whether your bricks are inside or out, identifying their type and condition before cleaning is essential.

A power washer being used to clean bricks outside of a house.

How to clean bricks: the basics

For general upkeep, a gentle approach is best.

You’ll need:

Soft brush
Bucket of warm water
Mild detergent
Sponge
Cloths

Steps:

1. Brush away loose dirt.

2. Lightly dampen the bricks.

3. Apply a mild soapy solution.

4. Gently scrub in circular motions.

5. Rinse with clean water.

This method works well for minor grime indoors or outdoors.

Power washers are effective at cleaning bricks from grime in outdoor areas.

Deeper cleaning for outdoor walls

Outdoor bricks can get tougher stains from weather, pollution, and algae. Use specific cleaners made for masonry, but always test on a small spot first. Avoid pressure washers on older brickwork, and pick a cool, overcast day for cleaning to prevent streaks.

How to remove brick paint safely

Removing paint from bricks requires care to avoid surface damage.

Methods:

Paint strippers: Choose one suitable for masonry, follow instructions, then scrape gently.
Steam cleaning: Softens paint without chemicals.
Soft wire brushes: Only for stubborn spots, avoid scraping too hard.

After removing paint, rinse thoroughly and let the bricks dry completely.

Bricks being pressed together with mortar by a builder.

How to clean mortar off bricks

Excess mortar can make brickwork look messy. Here’s how to tackle it:

Fresh mortar:

Brush it off gently once it starts to firm.

Dried mortar:

1. Dampen the bricks.

2. Apply a masonry-safe mortar remover or diluted brick acid carefully.

3. Scrub gently and rinse well.

Avoid using acid on dry bricks and always follow safety instructions.

A built wall made by a builder, with bricks and mortar.

Common mistakes to avoid

Using bleach on older or coloured bricks
Aggressive scrubbing with metal tools
Skipping pre-wetting
Leaving cleaning solutions on too long

Cleaning bricks properly keeps them looking their best and extends their lifespan. By taking a careful approach, whether doing routine brick cleaning, learning how to remove brick paint, or figuring out how to clean mortar off bricks, you can restore your brickwork’s natural charm and keep it that way for years!

If you have any more questions about how to clean bricks, or you require any additional information about the products we sell at Howarth, please visit your local Howarth branch, or contact our customer services on 01472 907051.