Glossary beadboard A form of paneling, traditionally made of wood, with tongue-and-groove boards running the height of the panels. Also called wainscoting. Home Improvement Glossary boot Boots, the rubber seals that are around the electric service and plumbing vent pipes, air vents, and exhaust fan flashing. Home Improvement Glossary brad nails A type of nail with a very small head used for securing molding. Home Improvement Glossary building permit Most towns or counties require a permit to build on or change a property. During different stages of the job and at its completion, the work is inspected to ensure that it meets the building codes. Home Improvement Glossary butcher block A thick block of wood made from laminating several strips of wood together. Butcher blocks are often used as a cutting surface. Home Improvement Glossary butt end The fat end of a shingle. Home Improvement Glossary cartridge filter faucet A faucet with a cartridge filter built in to filter drinking water. Home Improvement Glossary casement windows Casement windows have hinges on one side of the sash and swing outward when you turn a lever or crank. Because the entire window swings out, these windows provide full ventilation and unobstructed views. Casement windows are commonly used in areas with extra heat or humidity, such as kitchens, bathrooms, and on walls that connect to porches. Home Improvement Glossary cast iron pipe Commonly used before 1960 for the vertical drain, vent stacks, and sometimes the horizontal drain lines. Cast iron is durable, but