What putty putty drywall. Analysis of the proposals of construction markets
Despite the perfectly flat surface, gypsum board before any type of finish needs to be putty to hide the joints and improve the adhesion of the base, reduce the consumption of finishing materials - paint, wallpaper glue, glue for decorative tiles, etc. And here a reasonable question arises: what kind of putty to choose for drywall?
The content of the article
Types of putties
Putty is a mortar intended for leveling surfaces, which creates a strong layer on them after hardening, protecting the base from external influences and facilitating subsequent finishing. Different types of work require different compositions, so it’s definitely impossible to say which putty is best for drywall.
These materials differ in composition, purpose, degree of readiness for use. To make the right choice, you need to understand these varieties.
Proper selection
The standard technology for finishing gypsum plasterboard structures is to seal joints, corner joints and attachment points, after which the entire surface is leveled. It can be done in one step, if the walls are designed for cladding or wallpaper decoration, and the sheets do not have obvious surface defects.
Or a few - if you need perfect alignment for painting.
What is the putty for drywall in each of these cases:
- Starting or leveling - for sealing joints, deep cracks, chips, areas with damaged paper coating. These are coarse-grained mixtures intended for rough primary leveling. It can have any color from white to gray and brown.
- Finishing fine-grained putty is used for applying the final layer, aligning minor defects. It is predominantly white, which makes it possible to use light shades of paint or subtle wallpapers in the future, without fear that the walls will shine through them.
- Universal putties have the functions of both starting and finishing compositions and can be used at any stage, including when leveling bases from other materials. This is their main advantage.
You can purchase either a starting and finishing puttyto remove large defects and cover the seams with the first, and extend the entire surface with the second. Or just use the universal composition for each stage.
Composition Choice
When choosing a putty, it is important to consider in what conditions it will “work”:
- For dry rooms, gypsum-based formulations are best used. They do not differ in high moisture resistance, but possess good quality and lack of shrinkage when drying.
- For finishing wet rooms - bathrooms, bathrooms, kitchens - the instruction requires the use of cement-based mixtures. They protect the base from water and fumes, as well as from various mechanical damage.
Note. When dried, the cement putty shrinks and may produce cracks that need to be repaired before the start of the finish.
- It is easiest to work with polymer putty, which has a wide range of applications, excellent moisture resistance, strength, lack of shrinkage and ease of application. Its only drawback is the high price compared to the types listed above, which leads to a significant increase in price. rough finish.
Ready to use choice
There are commercially available materials for leveling drywall walls in the form of a dry mixture, which must be diluted with water immediately before use, and in finished form, requiring only thorough mixing. Each of them has its pros and cons, so you have to decide which putty is better for drywall.
So:
- The main plus of dry powder mixtures is their cheapness. The disadvantage for inexperienced finishers may be the need for self-cooking using a special tool (a construction mixer or drill with the appropriate nozzle) and difficulties in determining the optimal consistency.
The disadvantages also include a fairly quick solidification of the finished solution. However, many masters prefer just such compositions. - Ready putty can be used immediately, just mix it until smooth. In a hermetically sealed container, it does not freeze for a long time, while maintaining elasticity and other properties, long breaks in work are not frightening for her. But to pay for such convenience will have to be more expensive.
How to prepare putty from dry mix
If the question is what putty plasterboard plaster, it’s decided for you, and you have chosen a dry mixture, it is important to prepare it correctly.
As a rule, each manufacturer prescribes on the packaging recommendations for the preparation of putty mortar. The standard proportions for all are approximately the same: for each kilogram of powder, 2-2.5 liters of water is added. Typically, the solution is prepared in a large bucket of half a bag of putty (bag of 25 kg) and 30 liters of water.
But it is difficult for a beginner to spend such an amount in those half an hour during which the solution retains viscosity and elasticity. And weighing the powder is quite problematic.
Therefore, wizards use the following method:
- Pour water into the mixing tank, the temperature of which should be about 25 degrees;
- Gently pour dry mixture into it so that it gradually pours into the center of the bucket, rather than “splashing” in a heap;
- When a hill of powder appears above the surface of the water, continue to pour so that it grows 1/3 of the height of the liquid;
- They wait until all the powder is saturated with water and settles, after which they immerse the mixer in a bucket and mix the putty at a speed of 500-600 rpm;
Note. Do not increase the rotation speed of the mixer, otherwise the mixture will be saturated with air bubbles.
- After mixing the putty until smooth, it is left for a couple of minutes, then mixed again and immediately used.
To seal joints and rough alignment, the mixture should be thick enough. Its suitability is determined in a simple way: the solution is collected on a spatula and it falls down with the working surface.
Putty should slowly slide off the tool, and not drain from it and not fall with the whole mass.
For finishing work, a thinner solution is made so that it is more convenient to stretch it with a thin layer.
Conclusion
From the huge range of building mixtures on the market without sufficient experience, it is difficult to choose those that will be easy and pleasant to work with, and the result will be satisfactory. Therefore, do not take risks, acquiring an inexpensive and little-known putty, give preference to proven brands, among which the most popular are Vetonit, Fugenfyuller or domestic Volma.
If this is your first time trying to putty drywall, first watch the video in this article to explore all the subtleties and nuances of the process.
