I used some interior / exterior spackle instead to fill in some small imperfections around a ceiling light install. Luckily I didn't use on the repair first. I used some really old patching plaster last week too cheap & lazy to drive to the store.but I did test it, the stuff kicked in about 5 minutes but never really gained strength. If the joint size is greater than a inch deep, insert foam backer rod material before applying the sealant. I wouldn't risk using the frozen stuff.is $25 of mud worth your potentailly wasted time if the stuff is bad? But I hate the stuff anyway so take my advice with a grain of salt. But you can always use patching plaster to get the surface back again if you gouge it. A belt sander can remove a lot of matl quickly which is good & bad. Otherwise, chip out bad section scratch coat, brown coat, finish coat. This only works if the plaster keys do not prevent "fit up". I have successfully injected liquid Bondo or epoxy through small holes drilled in the plaster & then jammed the plaster back up against the lath with a "wall to wall" strut. If it is loose, you need to remove & replace unsound section or attempt to re-adhere it. Why does "The plaster at the edge of the cracks is slightly peaked outward." ? Smooth walls get patching plaster, good knife work will minimize the need for sanding. IMO a single smooth line on textured wall looks better than a wide swath of smooth mushed over the texture. Textured walls with cracks get vac'd & a flexible caulk worked into the crack, sponge work to minimize the caulk down to the crack only. joint, when said joints are made steam - tight by the interposition of a. Has the settlement ceased? Are the wall smooth or some sort of texture? (I've got some smooth / some textured) Cracks only or loose / missing plaster / loose plaster? plaster of Paris ( calcined gyp- colors it green, and to this must be. To see these repairs in greater detail, check out our How to Fix Drywall video. When it’s dry, wet-sand with a drywall sponge. For larger cracks, place fiber mesh tape over the crack first, and then spackle with DAP Alex Plus. You can easily find both products on the shelves of your local home improvement store. How old is the house? Obviously you are located where the weather can get pretty nippy. Patch small, stable cracks with DAP Fast Dry Premium Spackling. Last updated: ApWhether you are taping drywall seams or patching a hole in the wall, most homeowners are inevitably faced with a choice between joint compound and plaster. This can mean you need to touch up the surface which can be tedious and time-consuming. The stuff sucks, it's water soluble.just add water & it turns to mud again, it has no strength or flexibility but it is cheap. Compared to join compound that provides a sleek, shiny finish, spackle provides a rough, porous finish that can be tough to conceal, especially when applied in large volumes. I seldom use joint compound on the restoration of my 1930 home.
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