Wood decay damage can be minimized by the preventive measures described in this publication. These measures also help prevent damage by some wood-destroying insects. Contents: Wood Decay in Houses. What Makes Wood Decay. How to Control Decay. Selecting a Building Site. Wood in Contact with Soil. Wood in Contact with Concrete. Condensation in Walls, Attics. Condensation on Windows, PIpes. Houses without Basements. Porches and Outside Steps. How to Repair Damage. How to Combat Decay Decay-Resistant Woods. Wood Preservatives. Applying Preservatives. 10 Ways to Reduce Decay.