Wood rot is usually caused by moisture, at least initially. Once the wood dries it can continue to rot. This is known as dry rot.

   When an area of wood rot is identified, it must properly be repaired to prevent further damage. Homeowners should be aware that the International residence Code (now used by all U.S. states) does not permit wood rot to be simply covered up or left in place. it must be removed or repaired.

   Wood rot can happen anywhere on your home, but it is most common in the following places:

-Corners and Joints- watch for wood rot wherever two pieces of wood join together to form a corner. It's easy for moisture to collect here and it won't dry out quickly.

-Window Sills and Frames- If not properly caulked and treated, water can easily seep into wooden sills and window frames.

-Wood Columns- Columns are usually hollow on the inside and the inner wood is often untreated. When water gets in at the top or the bottom of the column, it's a perfect environment for wood rot.

-Doorway Jams and Thresholds- Simply because they are near the ground and horizontal, doorway thresholds often remain damaged for a long period of time. This is one of the most common places to find wood rot.

-Eaves and Roof Overhangs- water can seep onto your homes wooden eaves and overhangs in many different ways. Gutters can overflow and moisture can get under the shingles, exposed joints and nail punctures can wick up water.

-Garage Doors- Many older homes have wooden garage doors and the panel nearest the ground tends to collect moisture and rot.

-Fences- In addition to areas where two pieces of wood connect, water can seep between the boards and cause rot. Ground moisture can also cause wood rot near the bottom of the fence.

-Decks and Rails- Rot usually starts where water can wick into wood. Keep an eye on the plank/joist connections where nails punture the wood and water can seep in.