DECKS AND PORCHES: Did you know Monsoon Rains & the Tucson Sun can seriously damage exposed wood decks and porches? We recommend applying a wood preservative every year and replacing all decaying wood members with pressure treated wood. An improperly built deck or porch can become a breeding ground for fungi and and mold and introduce infections to the house. The most common decay encouraging problem is the lack of space between the deck planks. Debris such as leaves fall into the cracks between the planks and become trapped. They absorb rain water and the moist debris encourages fungus infections in the joist and planks. It’s important to take preventative measures to add to the deck or porches life.