Posted 20 hours ago

Hillman Group 41994, 25-Pack Zinc-Plated Plaster Washers, 25 Pieces

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I would use those Plaster washers instead, larger in size and work better on my house with 100+ year old ceilings. This is usually a problem caused when the plaster has lost its key. I have lifted a ceiling up over 1" and then taped. It is no fun to remove 1.5" of old plaster on wood laths. I agree, plaster washers are the way to go when you have plaster that has lost it's keys. I've also used them to support big sheets of drywall on ceilings with 24" joists. The larger surface area makes me feel more secure and use less screws. You now need to access the top side of the ceiling. For upstairs rooms, this is usually easy enough as you can get to it from the loft. For other ceilings, you will have to lift the floor in the room above to get access to the old lathes.

Install wallboard clips on the edges of the damaged wall by using the screws supplied with the clips. Clean away all the broken plaster from the area above and remove any other debris. Vacuum the area as well to remove as much dust as possible. Wet the area with clean water and a brush then make up a slightly sloppy batch of bonding plaster. Trowel this out over the damaged area so that it bonds completely with the old plaster and completely covers the lathes. Once the sagging area of lathe and plaster has been re-supported like this, the recesses for each screw can be filled and the ceiling redecorated Larger areas of sagging ceiling

Quick fixes for cracked plaster

I make my own plaster washers using a section of plumber strapping (metal strapping perforated with holes for fasteners). First I shape the strapping into a dimple shape around a hole using a ball peen hammer against a gouged piece of wood. Then I trim the strapping into a small disk that is now concave. If the sagging is slight, or covers a small area, you can reattach the plaster to the wood lath by using long drywall screws fitted with plaster washers. A plaster washer is a thin metal disk that increases the size of the head of a drywall screw so that it doesn't pull through the plaster. You thread the drywall screw through a plaster washer and then drive it through the plaster and into the ceiling joists, wall studs, or wood lath. The screw and washer pull the loose plaster tight against the framing, restoring the ceiling. By surrounding the area with plaster washers, you can stabilize the plaster so that it doesn't sag any further.

As plaster ages, these keys may break away from the lath, and the plaster coating can come loose and sag away from the lath. Sagging is usually obvious. If you have sags in a plaster ceiling, press upward on the area with the flat of your hand. If the plaster feels spongy or gives under your hand pressure, it's a sign that the key strength has been lost. If it's not repaired, the plaster ceiling can collapse. I use a Dremel tool with a diamond disk to make the the recess in the plaster to receive the washer. Be sure to use some sort of dust mitigation and wear a good dust mask, as this step can get messy. Secure the washers in the recesses with drywall screws.Roll a special topcoat over the fiberglass mesh if you use the Nu-Wal product; otherwise skim coat the mesh with two coats of joint compound. In older properties, lathe and plaster ceilings can become damaged and the bond between the old lathes and the plaster gets broken. Small areas can be repaired but larger areas are best cut out and replaced with plasterboard and then skimmed with finish plaster.

I'm puzzled why the editors thought this was a good video to put up for viewing? It seems kind of like a discussion of how to make your own nails out of wire.” Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

First, locate the joists or studs and mark their location in the loose area. Push up the loose plaster and place 2-in. screws and the perforated plaster washers into the joists or studs about every 6 or 8 in. The convex washer will flatten as the screw tightens. If the plaster has a rough surface, you may need to first scrape the surface to get the washer to lie flat. Next, secure the loosened field to the lath between joists with more washers. Finally, skim-coat over the washers with drywall joint compound. It may take several coats and extra effort to create a smooth finish or mimic the existing texture. Insert the wallboard patch into the hole and drive screws through the wallboard patch into each wallboard repair clip. I'm puzzled why the editors thought this was a good video to put up for viewing? It seems kind of like a discussion of how to make your own nails out of wire.

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