If the test shows the presence of asbestos, be very careful as you cover the ceiling with insulation panels, drywall, or another surface. These fibers reduce the size of the cracks that form as the water is driven off, thereby extending the length of time the gypsum panels resist fire without failure. Running a bead of glue on the stud or joist prior to screwing on the panel exponentiallyincreases strength between the panels and framing members.

Water that enters a room from overhead may cause ceiling drywall tape to separate from the ceiling as a result of the grooves immediately behind the tape where the drywall pieces meet becoming saturated. Deane Biermeier is an expert contractor with nearly 30 years of experience in all types of home repair, maintenance, and remodeling. Plasterboard 120 centimetres (47in) wide is most commonly made in 240 centimetres (94in) lengths; sheets of 250,260,270,280, and 300 centimetres (98,102,106,110, and 118in) and longer also are common.The porosity of the board—introduced during manufacturing to reduce the board's weight, lowering construction time and transportation costs—enables water to rapidly reach the core through capillary action, where mold can grow inside. Pro tip: Take special care in planning and sawing cutouts for electrical boxes because if you miss, that oversized outlet hole is a bear to fix. For the Windows, input the values of the Window Height, Window Width, and the Number of Windows to get the Total Windows Area. When exposed to high heat, the gypsum core shrinks, but this additive expands at about the same rate, so the gypsum core is more stable in a fire and remains in place even after the gypsum dries up. The part which might present the most difficulties is in the taping of the drywall - poor taping can result in cracks or fissures that will be inconvenient (but not impossible) to fix.

Lippage: A flooring term that refers to the trip hazard when one tile edge is higher than an adjoining tile. Drywall also known as plasterboard, wallboard, sheetrock, gyprock or gypsum board is a panel made of calcium sulfate dehydrate (gypsum) with or without additives, that is usually sandwiched between thick sheets of an outer layer of paper.Several builders' books state that thicker drywall reduces sound transmission, but engineering manuals recommend using multiple layers of drywall, sometimes of different thicknesses and glued together, or special types of drywall designed to reduce noise. As it evolved, it was faced with paper impregnated with gypsum crystals that bonded with the applied facing layer of plaster.