How to Patch Plaster Walls. Photo DIYdiva. Finishing a new wall or room with plaster or joint compound takes practice. If you have no experience with plaster or its near relative, joint compound, dont learn in your living room. Experiment first in a closet, the attic, or a workroom area where you can glean valuable dos and donts from the inevitable imperfections. Another good approach is to try patching first. Preparation. Remove all the old, loose plaster. When working directly on a masonry surface, use a club hammer and cold chisel rake out the joints to a depth of a quarter inch so that the plaster can form keys in the joints, adding strength to the new surface. Replace damp or molding wallboard that sags. If necessary, add wooden nailing surfaces at the edge of the wallboard patch to be certain it remains flat and stable. Reinforce the Patch. At the joint between the existing wall and the new patch, apply self adhesive fiberglass mesh tape. This will help bond the old and new together. For large holes, you may wish to use a sheet of aluminum or galvanized screening. Putting on the Plaster. Drywall also known as plasterboard, wallboard, gypsum panel, sheet rock, or gypsum board is a panel made of calcium sulfate dihydrate with or without additives and. Most commercial patching plasters require a thorough wetting of the surrounding plasterwork, though some do not read and follow the instructions to be certain. If you are patching a larger void, a two coat approach is probably best. Fill the edges of the hole with plaster, covering the tape or screening. Plaster Patch Drywall' title='Plaster Patch Drywall' />If the damaged wall has more than one hole in it, it is better to replace the entire drywall sheet than to replace a section. This will give more structural integrity. Plaster Patch Drywall' title='Plaster Patch Drywall' />Why Plaster Is Harder to Fix. Hannspree Drivers'>Hannspree Drivers. Blu Disc Studio Keygen For Mac'>Blu Disc Studio Keygen For Mac. Alternative Transient Program. With drywall, it is often more expedient to rip out entire sections and replace with large sheets. As difficult a material as it is. For more than 100 years, USG has led the building industry in drywall innovation. In that time, our USG Sheetrock, Securock, Durock and Fiberock Brands have. Shop sheetrock brand drywall panel common 12in x 2ft x 2ft actual 0. Lowes. com. Use a small filler knife, and bring the plaster just shy of the surrounding finish plaster. Let the newly applied patch set overnight. Some shrinkage and cracking is likely, especially in large patches. After the plaster has set thoroughly, apply a second coat, using a wider knife or trowel, preferably one wide enough to sweep over the entire width of the patch. Some plasters set quickly, so dont delay in feathering the plaster surface flush to the surrounding surface. If you are using a two stage patching plaster, you may be able to sponge on a small amount of water to gain added working time for further smoothing.