Drywall is a calcium sulfate dihydrate (gypsum) panel, with or without additives, usually extruded between thick sheets of sheathing and paper backing, is known as gypsum wallboard (also known as gypsum board, draibol or durlock) and is used in the construction of interior walls . ceilings.
To make gypsum, various additives that can decrease mold growth, flammability and water absorption are combined with fiber (usually paper, fiberglass or a combination of these materials), plasticizers and foaming agents.
Although it may seem like the simplest step in the procedure, properly painting a drywall wall is crucial. If specific factors are not taken into consideration, the finish and appearance of the wall will change. Here are some tips for a professional finish.
1. Depending on whether the painting is for the interior or exterior of the board, it is important to choose the right type of paint.
The type of panel to be painted and the climate of the place are two very important factors to take into account. For interiors, matte, gloss or satin paints are recommended.
Due to their velvety appearance, matte paints are a good option to cover wall imperfections. However, they are a less reliable option and usually get worse after cleaning.
But we also found that because of its covering ability, excellent leveling and finish, the most recommended paint for drywall is a type 2 water-based paint that is made of acrylic copolymers and is designed specifically for drywall surfaces.
Latex paints are a popular alternative that are also composed of polymers that have been thinned with water. They can be used both indoors and outdoors and dry quickly. The plastic layer that forms when the paint dries helps to protect the walls from external agents, although it should be noted that the paint is not waterproofing.
2. Do not apply directly on the plasterboard if a uniform finish is desired.
There are three different types of surfaces in plasterboard, and each has a different absorption rate, which is something to keep in mind when working with them: the screw holes, the plasterboard paper itself and the areas where the joint treatment was applied.
This is why it is advisable to apply a putty coat, with the recommended 3 coats of finish and then a light sanding to give the walls and ceilings a uniform surface finish.
3. It is recommended to use a primer on some surfaces.
Primer is a substance that is applied prior to painting and works to create a uniform surface with the same absorption rate to enhance the painting process.
Some drywall is shipped with papers that contrast with the color of the joint filler, such as white, gray, green, pink, blue or yellow. Therefore, it may be necessary to apply a compound to give uniformity to the wall before painting, depending on the desired color of the finish.
Two main effects can be obtained from this process by using a drywall primer or an inexpensive neutral paint. Matching the base color before beginning the painting process will result in a uniform final color with no gaps or dullness. However, by matching the porosity, the paint can adhere evenly.
Prior to application, some primers can be tinted, which gives the finished product a better finish by allowing the base to the desired color.
