How to Identify and Treat Wet Rot in Floor Joists

🪵 Soft, Bouncy Floors? It Could Be Wet Rot in Your Joists.

Wet rot is a common cause of timber decay in suspended floors, especially in older properties where moisture builds up in poorly ventilated subfloor spaces. If left untreated, it can seriously weaken floor joists and timber supports, putting the safety and stability of your home at risk.

At Weather Wise Solutions, we provide expert diagnosis and treatment using proven fungicidal systems from PAM Ties. As members of the Damp Proofing Association, we ensure all work meets industry best practice.

🔍 Signs of Wet Rot in Floor Joists

Look for these symptoms of early timber decay:
✅ Floor feels bouncy, uneven or soft underfoot
✅ Timber looks darker, split or crumbling
✅ A damp, musty smell under the floor
✅ Signs of fungal growth or localised mould
✅ Visible leaks or persistent moisture in the subfloor area

Wet rot is usually caused by long-term moisture exposure, such as leaks, rising damp, or poor ventilation.

⚠️ Why Treating Wet Rot Matters

Prevents worsening structural damage
Avoids costly timber replacements
Reduces the risk of secondary fungal decay
Helps maintain property value and safety

🛠️ Our Wet Rot Treatment Process

✔️ Full subfloor and timber survey
✔️ Moisture level testing and root cause diagnosis
✔️ Targeted fungicidal treatments for affected timbers
✔️ Joist replacement or repair where necessary
✔️ Subfloor ventilation improvements to prevent recurrence

We also inspect and recommend improvements to damp proofing and airflow to keep your timbers dry for the long term.