How to impregnate a brick?

Do you have to seal bricks?

Before we learn how to impregnate demolition bricks, we should answer why it’s an issue in the first place. Many homeowners tend to ask whether this task is actually necessary, and the answer is yes! Even though bricks are well known for their strength and durability, they are quite porous, which means they can quickly absorb water. In the short term, it won’t matter much, but over the years, the presence of moisture can even lead to the decay of the bricks. They will become crumbly and uneven, and their integrity will be compromised. Unsealed bricks will also create an optimal environment for fungal growth, which can weaken them even more. We know that impregnating exterior bricks is a must, but what about those inside your home? If they’re located in a room where there’s a lot of moisture and humidity, like a bathroom, you should definitely seal it.

How to prepare the brick walls?

So how to waterproof a brick exterior? You should start by removing from the brick wall any dust, grit or cobwebs. Use a broom or a big brush and pay attention to the mortar joints and corners because this is where dirt usually collects. Next, it’s time for a more thorough cleaning, so prepare warm water, add some soap or other mild detergent and get a clean rag. Scrub the bricks to remove any grime but remember to soak up any excess moisture afterwards. Leave the wall to dry overnight.

How to prepare the brick walls?

So how to waterproof a brick exterior? You should start by removing from the brick wall any dust, grit or cobwebs. Use a broom or a big brush and pay attention to the mortar joints and corners because this is where dirt usually collects. Next, it’s time for a more thorough cleaning, so prepare warm water, add some soap or other mild detergent and get a clean rag. Scrub the bricks to remove any grime but remember to soak up any excess moisture afterwards. Leave the wall to dry overnight.

It is worth mentioning that some versions of sealer will have a much more liquid texture, and this will make them tough to apply with a roller. If that’s the case, you may want to reach for a hand-pump garden sprayer. It will allow you to quickly and efficiently spray the sealer on the brick wall.

Check also how to remove brick cladding from the wall.