Why are my bricks turning white? – Efflorescence and how to remove it

Are you wondering why your brickwork is turning white?

If you have noticed white markings on the surface of your bricks, It’s likely that efflorescence is the cause.

While it’s not harmful to your brickwork, it does look unsightly and can make your property look older than it is.

In this blog, we will look at what efflorescence is, how it forms, and how you can remove it.

What is efflorescence and what causes it?

Efflorescence is a white powder that can form on the surface of bricks. It is caused by water seeping through the brick and carrying minerals with it. As the water evaporates, the minerals are left behind and form a white deposit.

The minerals that make up the efflorescence are usually salts, you might also see other compounds like calcium carbonate.

How to remove efflorescence from bricks

There are a few ways to remove efflorescence from bricks. One is to brush it off with a stiff brush.

Another good method is a mixture of vinegar and water. Just mix equal parts vinegar and water, and apply it to the affected area with a sponge or brush.

Let the solution sit for a few minutes and then rinse it off with water.

If a large area of your brickwork is affected then we would recommend calling in a brick cleaning company to remove the staining for you.

Preventing efflorescence in the future

The best way to prevent efflorescence is to make sure your bricks are properly sealed. This will help to stop water from seeping into the brick and carrying minerals with it.

If you have efflorescence that keeps coming back, it may be a sign that your bricks are not properly sealed, in this case, seek professional help to avoid damage to the property.

Other common stains on brickwork

Noticing other staining and wondering what it might be?

let’s take a look at some common brick stains and how to keep them at bay.

Black spots

Black spots on brickwork are usually caused by mould or mildew. This can be removed with a bleach and water solution.

If spots are not budging, you may need to get specialist help. A great method for removing mould spots is Doff Cleaning. This high-temperature cleaning machine can remove deeply rooted mould from brickwork and other fragile surfaces but you will need an expert to operate this machinery for you.

Green Stains

Staining that is green or yellow in colour is likely caused by Algae or Lichen, these are both types of plants growth that spread in a very similar way to fungus.

Algae can often be found on the north-facing side of buildings where it is damp and shady.

Lichen is similar to algae but is usually found on stone rather than brick. It can be difficult to remove and will normally require a fungicide treatment to prevent regrowth.

Black Carbon Stains

Black carbon stains are usually caused by smoke or soot. They can be difficult to remove but there are a few things you can try.

One is to rub the affected area with a cloth soaked in white spirit. Another is to use a wire brush on the stain. If these methods don’t work, you may need to call in a professional team.

If you need help with any types of stain on your brickwork then give us a call. We are experts in the field and can advise you on the best course of action.