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Can You Lay Bricks in the Rain?

Can You Lay Bricks in the Rain?



For many, the idea of laying bricks in the rain might seem like one that is relatively straightforward. After all, in the UK, bricks and mortar are exposed to the elements all year round so why wouldn’t it be possible to lay bricks in the rain?

The reality is that there is a lot more to laying bricks in the rain than putting on waterproof clothing and getting on with the job because this is a recipe for disaster.

Laying Bricks During Winter

Sure, in the UK, we don’t just get rain during the winter but that is when we get most of it but the approach to bricklaying should be the same regardless of the time of year.

Additional or excess moisture can cause severe problems for bricks and mortar and that’s why it’s important to take a considered approach. The most obvious source of moisture comes in the form of rain.

The main message here is to not lay bricks in the rain.

If you lay bricks in the rain then first and foremost, you will be exposing all brickwork to water over a prolonged period of time. This means that there is an increased risk of leaching, while cement residues and efflorescence will rise and that can lead to a poor finish to the front facing bricks.

When laying bricks, the mortar and bricks have to work together to ensure that they bond together but laying brick in the rain reduces the chances of this working correctly. When mortar becomes over-hydrated, a chemical process takes place and it can also lead to the mortar being unable to harden correctly and that could mean that it flushes out of the joints.

As mentioned, the winter months are notoriously bad for long periods of rain and that means that it’s vital to ensure that the brickwork is protected adequately throughout.

How to Approach the Weather When Bricklaying

The most important thing is to ensure that you check the weather. The last thing you want to do is begin laying bricks when there is a 99% chance of rain as that will undo all of the hard work you have done.

However, to ensure you can pick up the job once the rain has passed, it’s vital to ensure that you protect and store materials correctly. This will also include any part-finished work that you have completed because sometimes, the elements can creep up on us when we are not even expecting it.

Therefore, you will need to ensure that any brick structure is protected and insulated where necessary, especially if the weather is cold and frost is likely. A hessian blanket is useful for this but it’s not suitable in the rain on its own, so a polythene sheet will provide waterproof protection. Furthermore, you will also need to make sure that all unused bricks are protected too, especially if rain and freezing temperatures are likely to arrive together.

So, laying bricks in the rain is not something that is recommended and if you want to ensure that you achieve the best finish and minimise problems then you should make sure that the weather is dry before you begin laying.




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