Plaster In Roof

A plaster ceiling can support itself for a while but if enough of the keys come loose the ceiling can eventually unzip itself and come down in one tragic failure like a row of dominoes failing one after the other so this is important to resolve quickly.

Plaster in roof.

That was a year and half ago. Typically plaster ceiling cracks have two causes. Plaster walls are uncommon in newly built homes but if you live in an old house some of your walls may be made of lath and 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.

If you have a lath ceiling make sure the plaster surrounds the lath. I d say the area was about 3 square feet. After correcting whatever problem made the ceiling loose in the first place leaky roof structural alterations the first step is to assess how far the ceiling has pulled away. Holes from wall hangings scratches from furniture spilled liquids.

In addition water damage from roof or plumbing leaks can discolor plaster and cause peeling or efflorescence the leaching of salts and minerals to the surface. Gently push on the surface and judge the amount of play between plaster and lath. All buildings regardless of when or where they were built and with what material are subject to movement. First brush any loose plaster away you don t want loose plaster particles around the edge of the hole to compromise your project.

This will be the first coat of plaster you apply. To patch a hole in the ceiling plaster metal lath is fastened over the wood lath. 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. Establishing new plaster keys if the back of the ceiling lath is accessible usually from the attic or after removing floor boards small areas of bowed out plaster can be pushed back.

Then the hole is filled with successive layers of plaster as described above. As such water is a plaster wall s enemy. How to know when ceiling cracks are structural or just old. The plaster ceiling in my 1949 home sustained water damage from a roof leak discoloration bulging flaking falling etc.

Second fill the hole with plaster. It can be seasonal shrinkage. We put on a new roof and fixed the ceiling scraped mudded painted.