Choosing what to plaster gypsum blocks with

For interior walls, gypsum blocks are a common material of choice because they are smooth, long-lasting, and easy to work with. However, selecting the appropriate plaster is crucial for achieving the best outcomes. The right plaster can improve the way your walls look, shield them from harm, and make maintenance simpler.

There are various choices, and each has advantages and disadvantages of its own. The environment, the finish you desire, and the amount of work you’re willing to put into the application process will all influence your decision. Knowing your options can help you make the best choice, whether your goal is a more traditional finish or a polished, modern appearance.

This post will walk you through the various plaster kinds that work well with gypsum blocks and explain what makes each one special. By the end, you’ll know more clearly which choice is best for you, ensuring that your walls look fantastic and endure over time.

Why do you need to putty

It is impossible to talk about "How to properly plaster a wall made of blocks" without mentioning the type of blocks that were used in the wall’s construction. Because gypsum and concrete blocks are made of entirely different materials, plastering for them should be done differently.

Kindly take note! The fundamental rule to remember when applying plaster composition to a surface is that the base layer should always be stronger than the coating. Because of this, you can undoubtedly respond to the query, "How to plaster a gypsum block?" To putty the surface of these walls, just like with plasterboard (see How to putty drywall qualitatively), all you need is gypsum or compositions containing lime and gypsum!

Features of gypsum walls

Several varieties of gypsum structural material are utilized in building today. Not only do these blocks have dimensions that are comparable to ash and cellular concrete blocks (390 * 190 * 190 mm), but they also have fairly large slabs (670 * 500 * 100 mm), as shown in the picture below. There is a groove on one side and a ledge (ridge) on the other of both slabs and blocks.

• In order to carry out the layout of the room, it is difficult to even think of a more convenient material. The reason for this is not only the low cost of the products, but also the ease of their installation, which allows even a person far from construction to do the work with his own hands.
• Gypsum slabs and blocks are mounted with the groove up – accordingly, the ridge is inserted into the groove of the underlying block. If this is the first row, then the ledge is sawed off and cleaned with a roughing plane. The base underneath is always level, concreted. The position of each slab is verified by level, so that such a wall cannot be uneven in principle.

• Everyone knows that gypsum is very sensitive to high humidity. And, nevertheless, gypsum slabs are also used for the construction of external walls of buildings low rise. How is this possible? The fact is that to give the products moisture resistance, they are treated with a hydrophobic composition at the factory.
• In this case, the white slabs acquire a characteristic greenish tint, which can only be hidden under a layer of putty. In principle, when finishing a room, then when gluing wallpaper with a thick pattern and deep relief, neither the seams nor the color of the gypsum wall will show through.
• In this case, you can simply seal the seams, sand and prime the entire surface of the walls (see. Why do you need a primer: technological nuances of finishing work) – and you can glue the roll material. However, if these are thin light wallpapers, then hiding the seams and the green tint of the base under them will be problematic. That is why it has to be puttied over the entire surface.

• Note that we are talking only about interior finishing. It is recommended to cover gypsum walls from the outside with heat-insulating boards, on which plastering is carried out. Since in this case the plaster does not come into contact with the gypsum base, then cement-based compositions are used – or even one of the finishing options for the ventilated facade system is chosen.
• Manufacturers of dry gypsum plasters and putties usually offer mixtures of mixtures specially designed for gypsum block walls. They differ from the options for plasterboard by a slightly coarser dispersion – 0.14 mm versus 0.08 mm.

As a result, you must specify the material’s purpose before making a purchase. The instructions on the package containing the mixture include similar information. You will discover the correct way to perform plastering work by viewing the video included in this post.

The materials and techniques you use when plastering gypsum blocks can have a big impact on how long your walls last and look. Whether you choose more contemporary gypsum-based plasters or more conventional cement-based plasters, it’s crucial to take into account aspects like moisture resistance, application ease, and desired finish.

Plasters with a gypsum base are well-liked for their smooth finish and short drying times, which makes them an excellent option for interior walls. Nonetheless, a plaster with a cement base or one that has been modified with a polymer may be more appropriate in moist areas to avoid future damage.

Ultimately, the choice you make should be determined by the unique requirements of your area and the environmental factors it will encounter. You can make sure that your gypsum block walls are both long-lasting and visually beautiful for many years by selecting the appropriate plaster.

It’s crucial to take the intended finish and the material’s compatibility into account when selecting materials to plaster gypsum blocks with. Because of their unique characteristics and low weight, gypsum blocks call for a particular kind of plaster in order to guarantee longevity and a smooth surface. Choosing the incorrect plaster can result in problems like poor adhesion or cracking. Thus, knowing the various plaster choices and their advantages will assist you in creating a wall that is both durable and polished.

Video on the topic

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