Clues Which Can Indicate Problems 
Asbestos: Asbestos exposure (caused by inhaling loose asbestos fibers) is associated with various forms of lung disease. Though fire-resistant, its extremely fine fibers are easily inhaled, and exposure to them over a period of years has been linked to cancers of the lung or lung-cavity lining and to asbestosis a severe lung impairment. It is hazardous to your health when a possibility exists of exposure to inhalable fibers. Homeowners should be alert for friable (readily crumbled, brittle) asbestos and always seek professional advice in dealing with it.
Buckling: The bending of a building material as a result of wear and tear or contact with a substance such as water.
Carbon Monoxide: CO. A colorless, odourless, highly poisonous gas formed by the incomplete combustion of carbon.
Condensation: Water condensing on walls, ceiling and pipes. Normal in areas of high humidity, usually controlled by ventilation or a dehumidifier to prevent damage.
Corrosion: The deterioration of metal by chemical or electrochemical reaction resulting from exposure to weathering, moisture, chemicals or other agents or media.
Decay: Disintegration of wood or other substance through the action of fungi.
Fungal Wood Rot: A common wood destroying organism which develops when wood containing material is exposed to moisture and poor air circulation for a long (6 months +) period of time. Often and incorrectly referred to as dry rot.
Lead Based Paint: Lead is a highly toxic metal that was used for many years in products found in and around our homes. Lead may cause a range of health effects, from behavioral problems and learning disabilities, to seizures and death. Children 6 years old and under are most at risk, because their bodies are growing quickly.