| Dust and construction materials, such as wood, wallboard, and insulation, contain nutrients that allow biological pollutants to grow. |
| The two most common interior wall surfaces are gypsum wallboard, usually referred to as drywall or gyp board, and plaster. |
| When someone presses against a loosely nailed surface, the wallboard moves, and the nail heads pop through. |
| However, of these, only gypsum wallboard and asphalt paving report price gains in the double digits. |
| This anchor is designed for use in wallboard, plaster, or other hollow walls, such as tiled wallboard. |
| Drywall, often called gypsum, wallboard or sheetrock, is made of a crumbly fire resistant substance called gypsum. |
