In general, only two coats of plaster are needed to have a good result. A base layer and a durable topcoat. However, sometimes a third coat is needed to smooth out any blemishes and imperfections.
In general, only two coats of plaster are needed to have a good result. A base layer and a durable topcoat. However, sometimes a third coat is needed to smooth out any blemishes and imperfections.
The ceiling is finished first to avoid risk of damaging finished walls. This also allows crisp, neat seams to be done where the wall meets the ceiling.
Plaster is almost always put over drywall. Drywall is meant to have only a thin layer of plaster to create a finished look.
To be sure, ask the contractor if they will take care of wallpaper removal. Even if they do offer wallpaper removal before plastering, it isn’t too difficult to do yourself and will save time and money.
Putting plaster on plywood is not a good idea. Plaster is a cement type material and will not stick to anything that has moisture in it. Drywall and PVA are ok because they do not retain moisture. But plaster on plywood can cause dry rot and will be uneven around joins in plywood panels.
Putting paint on plaster that is not fully dry yet will cause the paint to crack and peel as the plaster finishes setting. If plaster is drying unevenly or not at all, the source of moisture needs to be found so it can finish.
Generally, plaster needs a minimum of seven days before paint can be applied. In humid weather or other poor drying conditions, it will take longer. Always check the entire surface before starting to paint to avoid cracking and peeling.
Plaster cannot be directly put onto wood. Metal or wooden paths need to be put on first to give the plaster something to attach to. Expanded Metal Lathing is usually the easiest way to do this. It will be invisible once all the layers of plaster are applied .
For even a small ceiling or wall, it can take a full days work to get a good result. Up to three days for a large ceiling. There are a decent number of steps involved to mix and apply plaster, and some waiting, also. It’s always best to call for a quote and get a
Weather can affect how fast plaster dries. Any humidity or precipitation is going to increase the time it takes plaster to dry. To make plaster dry faster, small heaters and good ventilation can be used to encourage drying.