How to Stop Dry Rot From Spreading

Updated February 21, 2017

Dry rot is a type of fungus that can destroy the wood in and around your home. Wood that has begun to rot can be identified by a dark, mouldy substance on its surface. This substance was caused by a combination of heat, moisture and darkness. Once it is found on your wood, it is difficult to stop. Take the necessary steps to remove dry rot as quickly as you can.

Remove all moisture from on and around the infected wood. Use rags to soak up the water and then wipe it away. Place a fan in the area to make sure it continues to dry.

Find where the moisture was coming from. If there is a leaky pipe, for example, have it fixed as soon as possible. Dry rot can become difficult to control after too much time has passed.

Get rid of the infected wood if possible. If it's not possible, use a fungicide to treat the dry rot.

Reduce the humidity to prevent more dry rot. Set up a dehumidifier in the room with the infected wood, or just open more windows.

Set up moisture barriers, if needed, inside of the insulated part of the walls. They should always be on the heated side of the room.


Keep an eye out for peeling paint. This is a sign that wood may be rotting.

Things You'll Need

  • Rags
  • Fan
  • Dehumidifier
  • Moisture barrier
Cite this Article A tool to create a citation to reference this article Cite this Article

About the Author

J. Johnson has been completing freelance writing work since September 2009. Her work includes writing website content and small client projects. Johnson holds a degree in English from North Carolina State University.