Which Putty Is Better For Sealing Gypsum Plaster Joints Knauf Uniflot, Fugen, Volma

2023 Author: Philip Bishop | [email protected]. Last modified: 2023-08-25 07:54

• Nuances in work
• Tools. Materials for sealing joints GKL
• Preparatory work with joints
• Types of putty
• Putty Knauf Uniflot for joints
• Knauf Fugen
• Semin CE-78 plaster for plasterboard joints
• Finishing polymer putty JS weber vetonit
• VOLMA SEAM - TDST

When installation work begins using drywall, you need to take care of the strength of the structure. Why are the seams reinforced? What putty is used for reinforcement with serpyanka tape?

Before purchasing the correct material, you should familiarize yourself with its characteristics. Puttying the joints of the plasterboard structure is an important point on which the strength of the created surface, the rigidity of the structure, and the prevention of deformation and cracks depend. Consider what kind of putty is needed for drywall seams (gypsum plasterboard)? If there are several main types of material produced by different manufacturers. Each mixture has its own distinctive properties.

Nuances in work

In the process of reinforcing joints, nuances may arise that negatively affect the quality of the work performed. Therefore:

1. Before filling, close all windows and doors so that there is no draft. With a strong air movement, the seam will not be strong, capable of cracking.

   

2. The room temperature should be more than 10 degrees. Because the joint will not be strong if the temperature was low.

   

3. It is imperative to reinforce the drywall joints in the new building, because the building undergoes "shrinkage" and this negatively affects the drywall structure.

4. Cracks are reinforced with tape using a special putty mixture to prevent its growth.

   

Reinforcement of joints is an indispensable step in creating a beautiful and durable plasterboard structure. The tape and the mixture used will create an obstacle to cracking, as well as deformation from the effects of temperature drops, high humidity, mechanical force (hand blow).

Use fiberglass to prevent cracking on the walls.

Tools. Materials for sealing joints GKL

To seal drywall joints, a set of tools is needed, as well as some materials, without which the work will not be practical, of high quality.

1. A set of spatulas. A spatula with a narrow blade (8cm.), Typesetting (up to 15cm), a large spatula blade (up to 40cm). It is worth paying attention to the flexibility of the metal. The better the blade bends, the easier the work is.

   

2. Putty. To seal the joints, a special putty is used, which differs in its characteristics.

   

3. Reinforcing tape. Without it, the sealing of the joint will not work at all. This is one of the most important materials in this work.

   

4. Primer. The primer mix has several functions: it gives improved adhesion for the reinforcing tape, strengthens the base, and protects the drywall from moisture penetration.

   

5. Brushes, rollers or spray. These tools are used to apply the primer to the plasterboard surface.

   

6. Construction mixer.

7. Capacity for diluting the putty mixture.

   

8. Pure plain water.

9. Sandpaper for grouting after the putty has dried.

   

With this set of tools, as well as the materials necessary for work, the reinforcement of the joints will take place without taking much time, and high quality will also be achieved, which is necessary for the long service life of the plasterboard surface.

Preparatory work with joints

In order to start sealing drywall seams with your own hands, you should carefully prepare all the seams on the drywall surface.

The first step is to check the strength of the structure and the location of the fasteners. The caps of the screws must be recessed into the drywall, and the sheet itself must be firmly fixed to the frame.

There should be no peeled cardboard at the joints. If there are stones of gypsum, as well as sticking out paper, you need to carefully remove everything with a construction knife so that the joint has evenness and integrity.

If drywall sheets adjacent to each other do not have a special depression, it must be made with a knife at 45 degrees. Chamfer depth up to 5mm. this will make the seam strong and the structure rigid. All dust from the seams of drywall is removed quickly with a vacuum cleaner. Sheets and joints are coated with a primer.

Sealing drywall seams with paper tape or fiberglass and putty is carried out only after preparatory work.

Knauf manufacturer's technology for processing seams

Seam processing begins when the temperature and humidity conditions are established in the room.

The room temperature should not be lower than + 10 ° C and should be kept stable

for two days after treatment. Rapid heating and cooling of the room, drafts

during and after the treatment of the seams are unacceptable.

Before processing the seams, check that the gypsum building boards

or gypsum fiber boards are securely fastened. Tighten protruding screw heads.

Work leading to an increase in humidity in the premises must be completed, since moisture prevents drying and deforms the seams.

Treatment of seams of gypsum building boards using a reinforcing tape and a

putty mixture KNAUF-Fugen or KNAUF-Uniflot

Joints of gypsum building boards, with all types of longitudinal edges, are putty with a reinforcing tape and putty mixture KNAUF-Fugen or KNAUF-Uniflot.

The joints of gypsum building boards, formed by cut longitudinal or end

(not pasted over with cardboard) edges, are also puttied using reinforcing tape and Knauf-Fugen or Knauf-Uniflot putty mixture. To do this, before installing the

gypsum building boards, bevel the cut edge with an edge planer

at an angle of 22.5 ° by 2/3 of the sheet thickness.

For the treatment of joints of gypsum building boards GSP type H2 and GSP type DFH2 is used

putty mixture KNAUF-Fugen Hydro or Knauf-Uniflot (moisture resistant).

Perforated paper tape is used as a reinforcing tape.

With a two-layer cladding of the frame, the joints of the sheets of the first layer are putty without a reinforcing tape.

The sequence of actions when processing the joint of gypsum building boards formed by the longitudinal uncut edges of gypsum building boards:

• dust removal of the joint;

• application of the first layer of putty and pressing the reinforcing tape into it with a spatula

in the center of the joint;

• application of a covering layer of putty on the dried first layer;

• application of a leveling layer of putty on the hardened and dry topcoat.

The sequence of actions when processing the joint of gypsum building boards formed by the

cut edges of gypsum building boards with a beveled 22.5 ° by 2/3 of the

sheet thickness:

• dust removal of the joint (to improve the adhesion of the putty with the gypsum core, it is recommended to treat the cut edges with a primer KNAUF-Tiefengrund);

• application of the first layer of putty, pressing the material into the joint with a spatula and removing excess

putty from the surface of gypsum building boards;

• application of a covering layer of putty on the hardened and dry first layer and pressing the reinforcing tape into it with a spatula in the center of the joint;

• application of leveling layers of putty, after the reinforcing tape is seized

to the joint surface.

Places of installation of fasteners must also be putty. After the

putty has dried, remove any unevenness with a sander.

Now you can decide on a manufacturer that produces a special putty for reinforcement.

Types of putty

Manufacturers from different countries offer different mixtures for drywall joints. They are different in technical characteristics, differ in their features. How is it better to cover up drywall seams?

Putty Knauf Uniflot for joints

Knauf Uniflot is a universal filler. The mixture is suitable for normal and moisture resistant drywall. The use of the mixture is possible in rooms with normal and high humidity. However, it is not desirable to create a continuous layer of putty on walls or ceilings.

Distinctive advantages:

1. Strength. Plasterboard for drywall joints is comparable to cement.
2. Uniflot is a lightweight plaster, which makes it possible to use it not only on gypsum plasterboards with a thickness of 12.5, but 9.5.
3. This mixture can be used to seal joints without reinforced tape. This shortens the work time while keeping the quality high.
4. After the time it takes for Uniflot to dry, the putty does not allow water to pass through and does not absorb, which is a distinctive feature.
5. Due to the plasticity of the putty, the seam does not crack. If the plasterboard surface is heavy, it will not deform due to the created seam.
6. If the seam has a gap of 2 mm, then there is no mortar shrinkage. At a greater distance, "Uniflot" should be applied to the joint twice.

The disadvantage of the putty can be considered the impossibility of using it outdoors.

Putty application

Plasterboard putty is available in powder form with a distinctive shade. The solution is prepared in small batches, at a temperature of +10 to +35 degrees. The finished solution should be applied to the seam without waiting for 25 minutes, after which it begins to harden.

To achieve a stronger seam on a plasterboard surface, Knauf reinforcing paper tape can be used. This is mainly done in places where the plasterboard structure will be weighed down by an interior item (TV, water heater).

Knauf Fugen

How to putty drywall seams?

Fugen putty is made on the basis of gypsum and is intended for indoor use. With the help of special additives, the putty is able to create a moisture barrier. It is used for reinforcing plasterboard joints using a reinforcing tape.

Distinctive features:

1. Fugen has a fine-grained composition.
2. The minimum layer of the applied putty is 1mm, the maximum layer is 10mm.
3. The minimum temperature at which you can work with the putty is +10 degrees.
4. The entire solution should be worked up within 30 minutes. After the elapsed time, the solution begins to thicken.
5. Shelf life Knauf Fugen is 6 months. After the elapsed time, the mixture loses its elastic properties.

Reinforcement of joints is made with reinforcing tape "Knauf" by applying 2 layers of putty.

Putty application.

The application has a wide scope. It is used to reinforce joints in concrete slabs. Fills the joints of plasterboard structures. This is perhaps the most inexpensive and popular option with which you can get rid of cracks on the surface of the gypsum board.

Fugen is used when installing painting corners. It is also used as an adhesive for leveling walls with plasterboard sheets.

Semin CE-78 plaster for plasterboard joints

How to seal the seams between drywall?

Semin is a fine-grained putty that allows work at low temperature conditions from +5 to +10 and above and high humidity. The main difference from other mixtures is fast setting, which reduces the time for reinforcement.

Available dry putty and paste.

To reinforce the drywall seam, use a reinforcing tape. Putty is applied in 2 layers. After applying the first seam, fix the tape without waiting for drying. Then a second layer of putty should be applied.

After drying, it is required to clean it with sandpaper.

Finishing polymer putty JS weber vetonit

Polymer-based putty is applicable both for reinforcing joints with a reinforcing tape, and for solid filling walls and ceilings with your own hands.

Has versatility, excellent adhesion properties, and prevents cracking. The putty contains ground marble, which gives an advantage immediately after the putty to apply the finishing material: painting, wallpaper.

Distinctive feature: after mixing the solution, the time for working with it is 48 hours. But, when applied to the surface with a layer of 1mm. it takes 3 hours.

The negative property of the putty is that it is not moisture resistant, so it cannot be used in rooms with high humidity.

VOLMA SEAM - TDST

What type of filler is suitable for sealing drywall joints?

Such a putty as Volma seam has a gypsum base and is applicable only for interior work with drywall seams, as well as work with cracks that have appeared on the surface. Volma's gypsum putty allows the leveling of surface irregularities up to 5 mm, which is a distinctive feature. It is possible to work with gypsum putty at a temperature of + 5- + 30 degrees, while there may be high humidity.

Applying Volma for reinforcing the seams requires the use of a serpyanka tape. Putty is applied in 2 layers.

Reinforcement of joints is an important stage in the creation of an integral single structure made of drywall, which will be durable, beautiful, and pristine for a long time. It is of great importance what kind of putty was used during the reinforcement of the joints. It depends on temperature, humidity, and whether the reinforcing tape was used or not.

More detailed instructions on how to seal drywall seams with your own hands.

In addition, we suggest watching a video on sealing gypsum board joints.

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