What is dry rot?

Dry rot is a type of wood-destroying fungus that thrives in dry, warm conditions. It is a common problem in older homes and can cause significant damage if left untreated. In this article, we will explore the causes of dry rot, the potential damage it can cause, and the steps that can be taken to treat and prevent it.

What are the causes of dry rot?

The main cause of dry rot is the lack of moisture in wood. This can occur when wood becomes too dry, either due to low humidity levels or because it is exposed to excessive heat. As the wood dries out, it becomes more susceptible to attack by dry rot fungus.

How to identify dry rot

One of the most common signs of dry rot is the appearance of dark, musty-smelling fungus on wood surfaces. This fungus can quickly spread, causing the wood to become weak and brittle. Over time, the wood will become structurally unsound and may even start to crumble or rot away completely.

What damage can be caused by dry rot?

In addition to damaging wood, dry rot can also cause other problems in the home. For example, it can cause walls and ceilings to become discolored and may even lead to the growth of harmful mold. In severe cases, dry rot can even compromise the structural integrity of a home, making it unsafe to live in.

How to prevent dry rot

To prevent dry rot from occurring in your home, it is important to keep moisture levels under control. This can be done through regular maintenance and repairs, such as fixing leaks and ensuring that your home has proper ventilation. It is also important to inspect your home regularly for signs of dry rot and to address any problems as soon as they are discovered.

Who should you speak to for advice?

If you suspect that you have dry rot in your home, it is important to seek professional help as soon as possible. A qualified tradesperson, such as a carpenter or a building surveyor, can help identify the extent of the problem and recommend the best course of action. In most cases, dry rot can be treated by removing the affected wood and replacing it with new, treated wood. This will help prevent the fungus from spreading and will ensure that your home remains structurally sound.


In conclusion, dry rot is a serious problem that can cause significant damage to a home if left untreated. By understanding the causes of dry rot and taking steps to prevent it, homeowners can protect their homes and ensure that they remain safe and structurally sound. If you suspect that you have dry rot in your home, it is important to seek the help of a qualified tradesperson as soon as possible to prevent the problem from worsening

If you would like to speak to an expert about the steps that you can take to treat dry rot, install the free Planna app using the links below to and book a 15 minute video consultation from as little as £5.

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