Corners can be difficult areas to plaster correctly. They frequently require extra care to guarantee a tidy and polished finish. Your walls will look much different overall if you know what kinds of corner profiles to use and how to install them properly.
Plastering uses a variety of corners, each with a specific purpose in mind. While some are built right into the plaster, others are pre-formed metal or plastic trims. The intended finish and the function of the room will determine which type to use.
Achieving clean, sharp corners requires proper installation. Every variety of corner profile has a unique installation technique, so it’s critical to adhere to the product’s particular instructions. This guarantees that your corners are strong and long-lasting in addition to being aesthetically pleasing.
Understanding the different types of plaster corners and how to install them will help you improve the look of your walls and give any space a polished, finished look.
| Type of Corner | Description | Installation Rules |
| Plastic Corner | Made from durable plastic, this type is lightweight and resistant to moisture. | Ensure it is aligned properly before fixing it in place. Use a strong adhesive for a secure fit. |
| Metal Corner | Typically made from aluminum or steel, it provides a strong, long-lasting edge protection. | Attach with screws or nails. Make sure it is level and flush with the wall surface. |
| Corner Bead | A metal or plastic strip that provides a sharp, clean edge for plastered corners. | Embed it into the plaster while it is still wet, ensuring it is straight and well-positioned. |
| Flexible Corner | Made from bendable material, suitable for curved or irregular corners. | Carefully shape it to fit the corner, then secure with adhesive or plaster. |
Purpose
Corners are designed to make the work of the master easier and enable the creation of a wall corner that is precisely square. Depending on the intended use and design, they can be mounted on top of or beneath the plaster.
Only if the wall surface is even in one plane can you avoid corners, but as experience has shown, it is very challenging to execute trimming with jewelry precision.
If corners are not plastered, the joint between the surfaces may become uneven or wavy. This will make all of the imperfections visible when wallpaper is painted or adhered (as shadows and variations in relief). A decorative overlay can conceal them, but this option isn’t always implied by the design.
Varieties
Generally, a plaster profile with paint mesh for fixing in the solution or perforations for leveling and strengthening a corner is used. Arched profiles for curved joints and options for internal and external corners are available.
Regarding form, the profiles can be:
- Perforated. The simplest corners "in a hole". Used to form an internal or external corner, the most popular option.
- With mesh for additional adhesion to the wall and for leveling the surface is often used in facade work, including when plastering over insulation. The mesh, like perforation, passes the plaster mortar through itself and is firmly fixed on the wall.
- Arched. They are divided into small sections to make them easier to bend. Used to level the side surfaces of passages, arches, curved plasterboard structures on walls and ceilings.
Depending on the manufacturing material, the corners are:
To achieve a smooth, polished finish when plastering corners, selecting the appropriate type and using the right installation methods are essential. This article examines the various kinds of corner profiles that are available and offers precise instructions on how to install them properly. Having a thorough understanding of these choices and techniques will guarantee that corners are both aesthetically pleasing and long-lasting, which will enhance the overall quality of the plaster work.
Installation of paint corners
Perforated
Let’s examine how the perforated corner is installed. Putty will be used to adhere it to the window slopes.
- We check the verticality of the slopes with a level (bubble or laser).
- We measure the required length of the profile, cut it with metal scissors.
- Lightly squeeze the corner along its entire length, t.To. it may not be at 90°, but more, which will lead to its edges crawling out from under the putty.
- We apply the putty to the slope, the same one that we will use to level the surfaces in the future.
The installation process for an internal paint corner for plaster is the same: apply the solution, press the perforated profile along the length, and use a spatula to smooth both sides.
In facade work, corners with mesh are more frequently utilized because they are strengthened, shielded from chips, and are more firmly embedded in the plaster. You must perform all of the previously mentioned tasks in order to install it.
Suggestions. Before puttying, a construction stapler can be used to secure the corner of plasterboard to the staples. In order to prevent curvature, press the profile using a meter level, for example, rather than your hands.
Arched
There are special corners on the market that bend easily and take on the desired shape when plastering arches. Their unique feature is that the shelf is made up of segments rather than being solid at one edge.
Such a perforated corner is relatively simple to bend and fix (the metal one holds its shape perfectly most of the time). Staples are used to secure it while pressing it up against the curved surface. Next, putty must be applied to both sides.
Using an overhead PVC corner that matches the finish color is another way to decorate arched openings. Working with a profile like this is more challenging because, well, it can straighten out and is more elastic.
What you need to paste over the arch is:
- Apply plastic glue (for example, silicate) along the entire length of the corner on both sides. Wait for a certain time, which is indicated in the instructions for the glue.
- Press the corner to the arch, starting from the bottom, moving to the opposite side of the opening. The overlay must be fixed pressed to the wall along its entire length. Use masking tape for this, stick it slightly taut.
- After the glue has set, you need to trim and remove the excess protruding from under the corner. When the glue is completely dry, you can remove the tape.
Paper
When puttying up plastered walls or plasterboard structures, paper finishing tape corners are glued in place in preparation for painting. They are easily concealed with putty because they have a minimum thickness.
However, if the corner is tilted to one side, paper corners won’t work to bring it into a vertical plane, so the caliber of the plastering job is important in this situation.
As usual, masking tape is adhered to putty on both the inner and outer corners. Always keep the metal reinforcing strips underneath the paper, so that it fits the wall.
The type of corner you choose for plastering and how it is installed can have a big impact on the final product’s longevity and quality. Whether you choose fiberglass, plastic, or metal corners, each kind has special advantages that are appropriate for various situations and settings.
A smooth and polished finish depends on proper installation. Make sure the corners are properly aligned and firmly secured. Also, be careful to apply plaster evenly to prevent any flaws. By following these instructions, you can produce a result that is both clean and long-lasting.
Plasterwork can be made to look better and last longer by choosing carefully which type of corner to use and how to install it. For any plastering project to have a polished, superior finish, these minor details are crucial.
