dryer lint and can be dusty when handled. Rock wool comes in loose fill that can be blown in or poured out of bags. Home Improvement Glossary roller cage The metal frame on a paint roller onto which the roller cover slides. Home Improvement Glossary roller cover The piece that slides over the roller cage on a paint roller. The roller cover is the part that actually holds the paint. Home Improvement Glossary roof flashing Roof flashing creates a watertight seal wherever the roof meets an upright -- such as around plumbing pipes, furnace flues, skylights, and chimneys. Home Improvement Glossary roof rake A tool that is used for scraping ice off roofs. Home Improvement Glossary rotary ball faucet A faucet that has a ball mechanism inside which controls water flow and temperature. Home Improvement Glossary rough-in inspection The first inspection on a remodeling project which occurs while everything is still at the rough-in stage of progress. Home Improvement Glossary run-on toilet If each flush doesn't end with a gurgle but instead continues with a hissing sound, with water running into the toilet bowl, you have a run-on toilet. Home Improvement Glossary sash brushes A narrow paintbrush used to paint trim and molding. Home Improvement Glossary satin finish The most popular paint sheen, which is a good choice for woodwork, walls, doors, and hallways. Schedule 80 PVC is sometimes used for cold-water supply lines, but it isn't allowed in some regions because it isn't suitable for hot water. Home Improvement