Dry rot

Dry Rot

Dry Rot can become very costly to treat if not dealt with in a timely manner. Although called ‘dry rot’ it is often caused by dampness and moisture and should be identified and treat quickly.

Dry Rot can easily spread through building materials other than wood, such as masonry. This means that dry rot can spread through a property very quickly causing major widespread structural damage.

We Eliminate Dry Rot

Dry Rot should be treated by trained professionals to ensure the problem is dealt with effectively. If you believe you may have dry rot, then some sure signs to look out for includes:

Wool like growth which resembles cotton wool.
Fruiting body that has a red rust dust around the fungus when in dry rot.
Looking for timber rot. The wood may shrink and darken in colour and cracks.

If you have any of the above then it’s quite likely that you have dry rot and you should act now to treat the issue.

Dry Rot Professionals

Our team of dry rot experts can carry out an extensive survey on your property to identify the source. Some of the most common reasons for dry rot can be from everyday items such as, leaking pipes, washing machines, showers and baths.

Once the dry rot is identified we will carry out whatever treatment necessary to eliminate it. Contact our team today for more information about dry rot and how we can help.

What is Dry Rot?

Dry rot is one of several species of fungi causes wood decay, where the fungi digests parts of the wood which give the wood strength and stiffness. Over time, this can result in the wood taking on a darkly coloured, deteriorated and cracked appearance.

What are the signs of Dry Rot?

Common signs of dry rot can include:
• damaged or decaying timber
• grey strands on timber
• damp or musty smell
• concentrated patches of orange–brown spore dust
• deep cracks in the timber grain
• brittle timber or timber that crumbles in your hand
• fruiting bodies that look like large mushrooms

How can I avoid Dry Rot?

As dry rot requires roughly 20% moisture content in the timber to begin growing, dry rot will not grow in dry conditions. Therefore, this results in homes with high humidity and poor ventilation becoming vulnerable to dry rot. An early warning sign of excessive moisture is condensation forming on the windows, especially in the most wet or humid areas. To address this, it is important to keep your home well-ventilated so that you can prevent moisture from building up. It is very important to identify and remove the moisture source before treating the fungus itself. If dry rot is not identified
at an early stage, then dry rot can cause severe damage to timber and spread throughout the home.

How can Dry Rot be treated?

Our qualified surveyors and technicians specialise in addressing dry rot. Our highly refined treatment process has been rated and approved by industry bodies to ensure that we comprehensively deal with dry rot in any type of property. Where necessary, we will replace defective timbers and
undertake repairs to retained sections, including structural and decorative timber. To prevent further infection, we treat all of our retained timber using the latest fungicidal formulations. Where necessary, we also irrigate and surface spray adjacent masonry with a biocide.

First, we will remove the source of moisture before continuing with any repairs. This is because a combination of moisture, damp timber and a lack of ventilation provides the perfect conditions for dry rot to grow. This makes it essential to remove the source of moisture.

Next, we will repair damaged and defective timbers. Timbers infected with dry rot will need to be removed and replaced by our repair specialists. Where possible, we will carry out repairs to structural and decorative timber.

Finally, any retained timber will be treated using the latest fungicidal chemicals to prevent future growth. As dry rot growth spreads through masonry, we recommend fungicidal treatment of timbers. If left untreated, the growth in the wall will continue to spread and will re-infect any new
timbers in the vicinity that are replaced. An irrigation process is used, holes are drilled into the masonry and fungicidal fluid is pumped into the wall to stop any growth. The good news is that rooms can be reoccupied just one hour after the dry rot treatment has been completed.

For more information about dry rot, our treatment services, or to get a quote, please feel free to get in touch with our friendly team of experts today

Dry Rot: Causes, Signs, and How to Treat It

Dry rot is one of the most serious timber decay problems affecting buildings in the UK. Caused by a specific type of fungus (Serpula lacrymans), dry rot can severely weaken the structural integrity of wood in a short space of time. If left untreated, it spreads rapidly through timber, masonry, and even behind plaster, leading to costly repairs and potential safety hazards.

What Is Dry Rot?

Dry rot is a form of fungal decay that thrives in damp, poorly ventilated conditions. Despite its name, dry rot needs moisture to begin its growth—usually when wood has a moisture content of 20% or more. Once established, the fungus digests the cellulose and hemicellulose in timber, causing it to lose strength, become brittle, and eventually crumble.

Unlike wet rot, which remains localised to damp areas, dry rot can spread extensively through dry timber after establishing itself in one area, making it much more destructive.

Causes of Dry Rot

The key contributing factors to dry rot include:

Excess Moisture: Leaking pipes, rising damp, condensation, or roof leaks can provide the damp conditions dry rot needs to begin growing.

Poor Ventilation: Areas with inadequate airflow, such as basements, crawl spaces, or behind plasterboard, create the perfect environment for fungal growth.

Neglected Maintenance: Unnoticed leaks, blocked gutters, or defective damp-proof courses can lead to prolonged exposure to moisture in timbers.

Signs of Dry Rot

Early detection of dry rot can save significant repair costs. Common signs include:
Timber that appears dry, brittle, and cracked, often with a cuboidal pattern of shrinkage
A distinctive mushroom-like smell, particularly in enclosed spaces
Fruiting bodies (sporophores) – these are rust-red, fleshy fungal growths that release spores
Silky grey or white mycelium spreading across timber, masonry, or plaster
Orange or rust-coloured spore dust in surrounding areas
Warped or sunken timber and loose floorboards
Dry rot often starts in hidden areas, so if you notice any of these signs, it’s vital to investigate further or consult a damp and timber specialist.

Treating Dry Rot

Effective treatment for dry rot involves addressing the root cause and removing all affected materials. Key steps include:
Identify and Eliminate Moisture Source: Fix leaks, improve drainage, and enhance ventilation to reduce moisture levels.
Remove Infected Timber: Any structurally compromised or visibly infected wood must be removed and replaced.
Fungicidal Treatment: Apply specialist dry rot treatments to adjacent timbers and masonry to kill any remaining fungal spores.
Restore and Repair: Replace removed materials with treated timber and ensure that the area is properly sealed and ventilated.

Preventing Dry Rot

Prevention is always better than cure. To reduce the risk of dry rot:

Keep your property well-ventilated, especially in basements and underfloor voids
Regularly inspect roofs, pipes, and gutters for leaks
Maintain an effective damp proof course
Act quickly at the first signs of water ingress or damp

Dry rot is a serious issue that requires immediate attention. Left unchecked, it can cause extensive damage and compromise the safety of your home. By understanding the signs and causes, and by taking swift action, you can protect your property from this destructive fungus. Always consult a qualified damp and timber treatment specialist if you suspect a problem.