How to Apply Finishing Plaster Part 1
When you are building any type of walls in construction, using a finishing plaster over the drywall is a cheap and easy way to go. Drywall has been a very common type of wall used in homes and businesses for years. Drywalls have mostly replaced traditional plaster walls altogether. One common method among home owners today is to use drywall along with a plaster finish on top. This gives you the cost savings and convenience of drywall along with the smooth polished look of the plaster finish as well. In this article we are going to look at how to install the drywall and then apply the plaster finish afterwards. (This is Part 1 of a 2 part series. To move ahead to Part 2, click here.)
Step 1 – Position the Drywall
The first step you will need to complete is to set up the drywall itself. It is recommended for the easiest method to use blue board drywall which works especially well with plaster. It has a unique texture on the surface that holds the paint very well. The blue board drywall comes in sheets just like traditional drywall.
Step 2 – Cover the Seams
Once you position the blue board drywall in place you will need to mud and tape the seams together. Put the drywall tape over each of the seams. The best tape to use is fiber mesh drywall tape. Apply a layer of joint compound over top of the tape using the drywall knife. After the first coat has dried you will need to apply a second wider coat.
Step 3 – Sand the Joints
At this point you will need to allow around 24 hours for the joint compound to dry completely. Once it has dried, use the sand paper to smooth out any rough areas in the surface of the wall. Be sure to sand the joint areas down to where they are level with the rest of the wall.
Step 4 – Apply the Plaster
Once the wall surface is completely smooth you can begin to mix the plaster. The best type to use in most cases is veneer plaster mixed with a little bit of water. Do not mix in too much water because it still needs to be thick to work best. The mixing can be done in the bucket easily with a paddle bit on an electric drill. Once you have the solution prepared you can apply the first coat to the wall. The plaster should be no more than 1/16 of an inch thick.
Step 5 – Second Coat and Finish
Once the initial layer of plaster has dried you will need to add a second layer of the same thickness. During the second coat be sure to try and eliminate any blemishes or bumps in the surface. Once the second coat has dried you can prime and paint it or just leave it as is for a plaster wall surface.