Plastering is a critical part of the construction process, yet it is often overlooked. Plastering provides a smooth, even surface that is essential for paint or wallpaper adhesion. It also helps to insulate and protect the underlying wall material from damage. Read more.
Main Types Of Plaster
There are two main types of plaster: gypsum plaster and cement plaster.
1. Gypsum Plaster
Gypsum plaster is the most common type of plaster used in homes today. It is made from gypsum, which is a soft mineral that can be easily ground into a powder.
2. Cement Plaster
Cement plaster is made from Portland cement, sand, and water. It is much harder than gypsum plaster and is typically used for exterior walls or floors subject to heavy wear and tear.
Plastering is a skilled trade that takes years of practice to master. If you are planning on doing any plastering yourself, it is important to take the time to learn about the different techniques and materials involved. Otherwise, you run the risk of damaging your walls or creating an unsafe environment.
When in doubt, always hire a professional plasterer to do the job for you.
If you are looking for a more traditional finish, lime plaster is an excellent option. Lime plaster is made from limestone that has been heated to drive off carbon dioxide. This leaves behind calcium oxide, which is then mixed with water to create a putty-like substance.
Lime plaster has been used for centuries and provides a beautiful, natural finish. However, it is important to note that lime plaster is not as durable as gypsum or cement plaster and is more susceptible to damage from moisture.
1. Surface Preparation
No matter what type of plaster you choose, it is important to remember that proper preparation is essential for a successful job. The surface you are going to be working on must be clean, dry, and free of any debris or dust. Once the surface is prepared, you can begin to mix your plaster according to the manufacturer’s instructions.
2. Application: Manual And Machine
Once the plaster is mixed, it is time to apply it to the wall. Plaster can be applied in two different ways: by hand or with a machine. Applying plaster by hand is the most traditional method and will give you the most control over the thickness of the layer you are applying.
However, it is important to remember that hand-applied plaster can be very messy and difficult to clean up if you make a mistake.
Types Of Machines
If you choose to use a machine, there are two different types of machines available: rotary and reciprocating.
Rotary machines are designed to spin the plaster around the wall, while reciprocating machines push and pull the plaster back and forth. Reciprocating machines are generally faster and easier to use than rotary machines, but they can be more difficult to control.
3. Preparation Before Painting/Wallpapering
After the plaster is applied, it is important to allow it to dry completely before painting or wallpapering. If you try to paint or wallpaper too soon, the plaster will not adhere properly and will start to flake off. Allowing the plaster to dry completely will also help to prevent any mould or mildew from forming on the surface.
4. Application Of Primer
When it comes time to paint or wallpaper, it is important to use the right type of primer. Plaster can be very absorbent, so using a water-based primer will help to ensure that the paint or wallpaper will adhere properly.
Oil-based primers can also be used, but they may yellow over time and can be more difficult to clean up if you make a mistake.
Once the primer is dry, you can begin to paint or wallpaper your room. It is important to start at the top of the room and work your way down. This will help to prevent any drips or runs from occurring.
When painting, it is important to use a brush that is slightly bigger than the area you are painting so that you can avoid having to go over the same spot multiple times.
After the paint or wallpaper has been applied, it is important to allow it to dry completely before moving on to the next step. Once the paint or wallpaper is dry, you can begin to apply the finish of your choice. Finishes can be either oil-based or water-based, and each has its advantages and disadvantages.
Oil-based finishes are typically more durable and easier to clean up if you make a mistake. However, they can yellow over time and may require more frequent reapplication. Water-based finishes, on the other hand, are less likely to yellow and will not need to be reapplied as often.
They are also easier to apply and remove, making them ideal for smaller projects.
7. Final Coating
Once the finish is applied, it is important to allow it to dry completely before moving on to the next step. Once the finish is dry, you can begin to apply the final coat of paint or wallpaper. This final coat will help to protect the finish and will also give the room a more polished look.
It is important to remember that plastering is not an easy task. If you are not experienced in this area, it is best to hire a professional to do the job for you. However, if you feel confident in your ability to complete the task, then by all means go ahead and try it yourself.
Just be sure to take your time and follow all of the instructions carefully so that you do not make any mistakes.
One last thing to keep in mind when plastering is that it is important to allow the plaster to dry completely before starting the next step. Otherwise, you may find that the plaster will start to flake off and will not adhere properly.
Allowing the plaster to dry completely will also help to prevent any mould or mildew from forming on the surface.
Now that you know the basics of plastering, you should be able to complete the task with ease. Just be sure to take your time, follow all of the instructions carefully, and allow the plaster to dry completely before starting the next step. With a little practice, you should be able to achieve a professional-looking finish in no time.…