This type of foam can also be injected using specialised equipment, this being a foam injection machine which is widely used by professionals. DIYers doing home repairs could certainly make do with PU foam cans, however. Now you’ve gathered everything you’ll need, you can get started, but firstly, make sure you cover any surfaces and move any furniture out of the area to avoid damage from falling materials. A kit that includes everything you need to repair loose plaster costs a lot less than how much it would cost to remove that much plaster, haul it away, then hang and tape the wall or ceiling. FAQs This is a step many skip but we consider it to be an important one. Run your hand along the cured compound that you’ve sanded. You should feel no bumps or deformities. Other than the texture, the compound should feel just as flat as the wall surrounding it. Now add another layer of filler to cover the tape and smooth out with your putty knife and leave to dry as instructed. Once dry, sand down the filler until it is flat and blends in with the surrounding surface.

Immediately apply a second coat of compound over the top of the mesh tape. Starting at the top of the tape, apply the compound and remove the excess. Wait 45 minutes to an hour so it can dry.

Apply mesh tape over the fresh compound. Starting at the top, lightly press the mesh tape into the bed of compound before using the putty knife to cut it at the bottom. ItemThumbnailImage": "//sherwin.scene7.com/is/image/sw/paint_template-1?layer=comp&wid=250&fmt=jpeg&qlt=92%2c0&op_sharpen=0&resMode=sharp2&op_usm=0.0%2c0.0%2c0%2c0&iccEmbed=0&printRes=150&_tparam_layer_1_src=sw/SW07110164", Once dry, apply a second coat of the flexible patching compound in the same manner as the first coat. Again, be sure that there aren’t any high spots or ridges left behind. Allow this coat to dry before painting. Old plaster walls and ceilings are made from two layers of plaster. The brown coat is applied over wood lath, strips that are nailed to the studs and spaced about ¼-inch apart to create keyways for the brown coat to grip. Rory Brennan, a Vermont-based plaster restoration expert, developed Big Wally’s Plaster Magic, a two-part adhesive, to reattach plaster without plaster washers.

Vibrations from heavy traffic, nearby highways, underground rail, and nearby construction activity. ItemImage": "//sherwin.scene7.com/is/image/sw/paint_template-1?layer=comp&wid=250&fmt=jpeg&qlt=92%2c0&op_sharpen=0&resMode=sharp2&op_usm=0.0%2c0.0%2c0%2c0&iccEmbed=0&printRes=150&_tparam_layer_1_src=sw/SW07110164", ItemImage467": "//sherwin.scene7.com/is/image/sw/paint_template-1?layer=comp&wid=250&fmt=jpeg&qlt=92%2c0&op_sharpen=0&resMode=sharp2&op_usm=0.0%2c0.0%2c0%2c0&iccEmbed=0&printRes=150&_tparam_layer_1_src=sw/SW07110164", Try holding a flashlight against the wall and shining it toward the compound—if you see any shadow, this means the compound is protruding from the wall. Sand as much as you can without getting to the tape or damaging the wall around it. Paint Peter and Noelle operate Peter Lord Plaster & Paint, Inc. specializing in the preservation and restoration of historic surfaces, and all plaster systems. www.plasterlord.com