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How to putty plasterboard walls and ceilings

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After reading the article, you will learn how to plaster drywall walls and ceilings on your own; learn to choose materials and tools for work; priming surfaces, preparing finishing putty and special putty for sealing joints; learn how to properly seal joints, putty and sand surfaces.

How to plaster drywall

Drywall as a material for leveling walls and ceilings is very popular today. Applying the finishing gypsum plaster to a plasterboard surface is a painstaking and laborious process. But the result is worth it!

Selection of materials for work

Choice of finishing plaster putty

On the building materials market, buyers can choose from various types of gypsum putties from leading domestic and foreign manufacturers. The choice is huge. The main thing that a buyer should pay attention to when purchasing a gypsum putty is its environmental friendliness. Since it will be used for filling surfaces indoors, it should not contain components harmful to human health. Which company made the putty is of no fundamental importance. It is only important that the product is of high quality.

The choice of putty for sealing joints

The choice of putty for sealing joints

Joint filler is more durable than conventional filler. Its use is a guarantee of reliable seams. Of the many similar materials among buyers, the most popular was Knauf putty – Uniflott.

Choice of primer

Since drywall is a loose, crumbling material, a deep penetration primer is needed to process it. After application, such liquid penetrates into the material and dries, providing additional strengthening. In addition, the deep penetration primer prevents fungi, mold, rot and lichens that are harmful to human health..

Choosing a serpyanka mesh

Serpyanka is a construction tape that will provide additional reinforcement of the joints and prevent the formation of cracks. There are three types of similar material on sale: painting serpyanka, construction bandage and self-adhesive serpyanka. The latter type of mesh with a width of at least 5 cm is best suited for strengthening drywall seams.

Tool selection

In order not to be distracted during work by searching and purchasing certain tools, they must be prepared in advance. It is better to buy tools in a specialized store – this will minimize the possibility of purchasing low-quality goods.

To putty the surface, you will need: three spatulas of different sizes, a special construction mixer, a container for preparing gypsum mortar, a roller, a brush, a bath with a ribbed surface for wringing out the roller, a knife for cutting drywall, a float, fine-grained sandpaper and a mesh for grinding.

Choice of spatulas

The choice of spatulas for work must be carefully considered, because the quality of work depends on their quality. There are various types of spatulas on sale, made of wood or plastic with stainless steel or powder-coated iron blades.

To putty drywall with gypsum finishing putty, you need three plastic spatulas with medium hardness stainless steel blades 44 cm, 10 cm and 5 cm long. There is no need to buy a spatula with a longer blade length. After all, such tools are used for leveling, and a plasterboard surface, as you know, does not need this. In addition, a large spatula weighs more. Accordingly, the hand will get tired faster..

Plasterboard partitions

Before purchasing, you must inspect the tool blade. It should be free of dents and scratches. A spatula with blade defects and notches on the blade will leave stains on the surface.

When choosing a spatula, you need to pay attention to how well it fits into your hand. Best of all – a tool with a streamlined handle, as it will not slip out during operation.

Roller selection

A medium-bristled paint roller is used to prime the plasterboard surface prior to filling. The choice of a roller is not as crucial a moment as the choice of spatulas. To make sure that the tool will serve “faithfully”, it is enough to pull it by the pile. The threads should not come out. If this is not the case, it is better to refuse to buy such a tool..

You can buy a roller together with a special plastic bath, on the ribbed surface of which it is very convenient to squeeze out excess primer.

Work order

Padding

Priming – applying a special liquid to the surface with a roller and a brush. After finishing work, you need to wait 30-40 minutes until the primer dries up and you can start sealing the joints.

Seam sealing

Before starting this stage of work, you need to carefully inspect all the seams in order to identify not fully screwed in self-tapping screws. If it is impossible to do this visually, it is enough to run a spatula along the seam. If everything is in order, the tool will run smoothly without snags. Otherwise, the screw can be tightened with a screwdriver..

After all the screws are screwed in, it is necessary to prepare “non-native” transverse and longitudinal seams (if any), which were formed as a result of cutting a sheet of drywall, for sealing. Such seams do not have original edges and, as a result, no grooves for filling with putty. You can fix the situation. To do this, with a knife for cutting drywall, it is necessary to cut the edge of the seam at an angle of 45 degrees to a depth of 0.5 cm.After the processed grooves, you need to additionally prime.

To prepare the putty in a container with a small amount of water, you must add a special mixture for sealing joints in the proportion indicated on the package.

Attention:the dry mixture should be poured into water, but not vice versa! This will prevent the formation of lumps in the solution..

Attention:to prepare a special putty for sealing joints, as well as finishing gypsum putty, you can only in a clean container.

Water and dry mixture must be thoroughly mixed until a homogeneous mass is formed using a construction mixer or by hand. There should be no lumps in the putty.

It is important:instead of a special construction mixer for mixing the putty, you can use a conventional drill with a nozzle, you just need to reduce its speed. Stirring at high speeds leads to the destruction of reinforcing additives and, as a result, to a decrease in the strength of the putty.

To fill the joints with putty, it is most convenient to use a spatula with a blade length of 10 cm. After that, along the entire length of the joint, it is necessary to attach the serpentine mesh and press it well. Excess putty, without waiting for drying, must be removed immediately. To do this, just run a spatula along the seam..

After drying, the layer of putty shrinks, so the procedure for sealing the joints must be repeated. There is no need to apply the net a second time.

Applying a finishing plaster putty and sanding the surface

Putty for sealing joints or putty for finishing also need to fill in the heads of screws that are not on the seams.

Applying a finishing plaster putty and sanding the surface

After the seams are dry, you can proceed directly to filling the surface with gypsum putty. The technology for the preparation of the finishing gypsum putty is the same as for the preparation of a special putty for sealing joints. It is important to follow the instructions on the packaging to avoid problems. If the finished solution is similar in consistency to thick sour cream, then it is prepared correctly.

To apply the gypsum finishing putty to the surface, use a spatula with a blade length of 44 cm.Apply the mortar to the blade of a large spatula with a convenient narrow, spatula-like 5 cm spatula.

It is necessary to apply the mortar on drywall walls in a thin layer (up to 2 mm.) In uniform movements in the direction from the floor to the ceiling. To the ceiling – in smooth movements towards yourself. After drying, it is necessary to remove irregularities from the surface with fine-grained sandpaper and repeat the procedure.

Attention:the second layer (1 mm thick) can be applied only after the previous layer has completely dried. Otherwise, when applying the second layer of putty, the not dried first layer will be smeared.

It is important:good ventilation and aeration of the room will speed up the drying process of the layers of the finishing putty. In this case, it is important to avoid exposure to direct sunlight..

After both coats are completely dry, the surface must be carefully cleaned with a sanding net by hand or using a special sanding device. Then you need to set the lighting at an angle and carefully examine the surface. Found minor flaws must be immediately eliminated.

The finished surface must be carefully primed and can be painted with water-based paint.

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Comments: 2
  1. Skylar

    “Could you please provide some detailed instructions or tips on how to properly putty plasterboard walls and ceilings? I’m interested in learning the best techniques and materials to achieve a smooth and professional finish. Thank you!”

    Reply
  2. Julian Davis

    I’m curious to know if anyone has any tips or step-by-step instructions on how to properly putty plasterboard walls and ceilings. What materials would be needed and what techniques should be used for a smooth and professional finish? It would be great to hear from someone with experience in this area. Thank you!

    Reply
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