Contrary to its name, dry rot is caused by water contacting wood over time. It's a commonly noted problem on home inspection reports in older homes.

When a house is improperly sealed or flashed, water will find its way into contact with the framing and this begins the process of rot.

Once begun, this reaction weakens the structural members, slowly spreading and disintegrating neighboring framework.

Wood that has dried after dry rot has begun is somewhat similar in appearance to termite damage.

Typical locations for dry rot to occur are where there's a failure in keeping the water out or in allowing it to pass through freely, such as decks, windows, doors, toilets, showers, and water utilizing appliances.

To correct dry rot, the affected wood must be cut out and replaced, whereas termite damage may indicate an infestation that requires pest control.