What wood rot is and why it happens
Wood rot occurs when timber stays damp for a long period. The moisture allows fungi to grow, breaking down the wood and weakening its structure. Both dry rot and wet rot are caused by this fungal activity, but they behave in different ways and need different treatments.
The difference between dry rot and wet rot
Dry rot and wet rot look similar at first, but they have key differences. Dry rot is more serious because it can spread through walls and floors, even across brickwork. Wet rot stays close to the damp source and spreads more slowly. Dry rot needs less moisture to survive, while wet rot depends on a continuous damp condition.
Common causes of wood rot in homes
Rot often starts where moisture enters timber. This could be due to a leaking roof, blocked guttering, faulty plumbing, or rising damp. Poor ventilation can also trap moisture in enclosed spaces such as under floors or inside wall cavities.
How to spot dry rot
Dry rot causes timber to become brittle and crumbly. The wood may shrink or crack into small cubes. You might notice a musty, damp smell or a white or grey fungal growth that looks like cotton wool. In later stages, the fungus can produce orange or rust-coloured spore dust.
Schedule Your Free Property Survey Now!
How to spot wet rot
Wet rot makes wood feel soft and spongy. The affected area may look darker than the surrounding timber. Paint or varnish may peel away easily, and the wood may feel damp to the touch. Wet rot usually stays in one place and is often found near leaks or condensation.
Where dry rot and wet rot are most often found
Both types of rot thrive in areas with poor airflow and high moisture. Common places include basements, roof spaces, and the corners of rooms where air does not circulate well. Floorboards near bathrooms or kitchens are also at risk, as small leaks can go unnoticed.
Why it’s important to identify the right type of rot
Treating dry rot and wet rot in the same way will not solve the problem. Dry rot can travel through materials and damage structural timber if left untreated. Wet rot usually affects only the damp area but can still weaken floors and beams. A professional survey can confirm which type you have and recommend the correct treatment.
.
Damp Proofing
We specialise in protecting residential and commercial properties from unwanted moisture through effective damp proofing treatments.
Water Damage
Structural waterproofing acts as a preventive measure, ensuring that water is kept out and your property stays strong and secure.
Mould Removal
At Damp HQ, we specialise in providing full mould removal and prevention services that make sure your home remains mould free
Timber Preservation
We provide comprehensive timber treatment services to protect your home or business from issues like wet rot, dry rot, and woodworm.
How professionals treat dry rot
Treatment starts by finding and removing the source of moisture. Affected timber is removed and replaced with sound, treated wood. The area is cleaned, and a specialist fungicidal treatment is applied to stop the rot from spreading. Improving ventilation and keeping the space dry are essential to prevent it returning.
How professionals treat wet rot
With wet rot, the focus is on drying the area and stopping water from getting in. Damaged timber is cut out and replaced. A preservative treatment is applied to protect the new wood. Once the leak or damp issue is fixed, wet rot does not usually return.
When to get expert help
If you notice soft, brittle, or discoloured timber, it is best to arrange a professional inspection. A damp and timber survey will confirm whether the issue is dry rot, wet rot, or another damp-related problem. Early action can prevent more serious damage and reduce repair costs.
To find out more about how we can help with your damp and mould issues complete the form on this page and we will be in touch.
