Plasterboard dispels untruths and myths – Novinky.cz

Plasterboard is the “cornerstone” of dry construction. It is mainly used in the construction of partitions, cantilever walls, niches, ceilings, room divisions or land renovations. It is very easy to work with, easy to install and simple to shape.

In addition, plasterboard partitions themselves have many other advantages. They are up to 2 times thinner than brick walls, giving you more floor space. This is especially appreciated by owners of small apartments, where every inch of space is good.

It is possible to pass sanitary installations in the cavity of the plasterboard walls (for example, electrical installations or water and waste pipes). It also works twice as fast during construction as with conventional brick.

“When it comes to the constructions often on the upper floors of apartments and prefabricated houses, the weight of the material itself also plays an important role, as well as the securing of the materials used and good handling. That is why the drywall is the best choice and a big plus when using a drywall system,” adds Martin Mydloch from Rigips.

No need to worry

You don’t have to worry about the quality and durability of this material. The so-called plaster has been produced for more than 120 years. For so long there has been a significant technological development in the production of plasterboard, and it is no longer just about “crumpled paper”.

Nevertheless, there is still some distrust of this material among the public. There are still a lot of unflattering assumptions about him.

Strength

Plasterboards are actually panels made of pressed gypsum, which is sandwiched between two hard papers. And it is also true that most types of plasterboard do not serve as load-bearing walls (therefore, plasterboard is mainly mounted on thin-walled steel structural profiles).

But that doesn’t mean the walls of this one are like paper. The fact that you were going to drill the plasterboard by hand is definitely not true.

Insulation material can also be integrated into the partitions.

Photo: Hornbach

“But the noise of a plasterboard when you tap it, but it really is – it deceives the body. It can also be avoided by following the correct technological procedures, including the insertion of mineral insulation, which is most often used in the insulation of partitions”, adds Martin Mydloch.

Noise

Even the fact that everything can be heard through the plasterboard is a myth. There are several types of drywall, so you can’t throw them in one bag.

Some plasterboards themselves have excellent acoustic properties. Even with a lower wall thickness, they achieve sound insulation values ​​14 to 20 dB better than with some walls made of other materials.

The Habito® H partition or screen is suitable for interior soundproofing. No more noise from the crèche or voices from the neighbours. In addition, the load bearing capacity of this plasterboard is up to 34 kg per anchor point when using a standard Ø 5 mm wood screw.

Photo: Rigips

An even better result can be achieved by incorporating insulating material into the plasterboard partitions. The right procedure is important for the best possible result.

“In general, we recommend first making the partitions with the insulation, then leveling the floor and the ceiling. The reverse procedure is not ideal, because then the acoustics are always worse – the sound can bypass the partition on the floor and the ceiling”, emphasizes Karel Sedláček from Isover.

In addition, there is a special type of plasterboard that does not transmit sound. “This type is called blue plasterboard, which is a panel specially designed for sound insulation,” says Richard Klička, an expert in the building materials department of Hornbach’s project markets.

He adds that the acoustic panel is excellent for deadening sound inside and outside between rooms – or the walls between apartments in a building. So the noisy television of the neighbors or the cries of the child next door will never bother you again.

Use in humid environment

Plasterboard gets wet quickly. But even that may not be true. Solutions are available on the market for a range of humidity levels, from normal operation in kitchens or bathrooms to areas with extreme humidity, such as a swimming pool.

However, it is essential that surfaces directly sprayed with water are protected by a waterproof coating, as ceramic tiles alone are not enough.

Combustibility

The fire resistance of plasterboard structures is accurately tested and certified. Specially designed constructions can withstand fire for more than 90 minutes. These panels with a high fire protection finish are generally red in color.

“They can withstand high temperatures due to the increased core strength,” explains Richard Klička.

load capacity

Nor is it true that drywall won’t hold anything. Some types of plasterboard have a load capacity of up to 80 kg at one anchor point, and can therefore carry a person.

Knauf Diamant plasterboard has many uses. It is suitable for areas with higher relative humidity (up to 75%), allows the hanging of heavy objects (when using anchors for hollow materials up to a weight of 55 kg), provides protection against the noise.

Photo: Hornbach

Overall, however, you can attach additional loads to any of the plasterboard walls. Whether it’s a board, shelf, TV, or kitchen cabinet, the right type of plate and anchor will hold everything you need.

Work with boards

For working with plasterboard, a cracking knife or hacksaw will suffice, or for holes (hand drill). After careful sealing and grinding of the joints, you finally need to fit the boards.

“Finally, the plasterboard must be well primed so that the paint or wallpaper holds well and the absorbency of the whole surface is balanced. If you wish, you can always apply a thin layer of plaster, otherwise the board doesn’t even need to be stuccoed,” adds Richard Klička.

Watch out for the docking stairs
As for the plasterboard partitions, it is also necessary to think about the staircase, from the type of which its anchoring is derived, already in the phase of preparing the construction documentation. “The side, spiral and segmental staircases have two basic anchorages – at the floor and at the front of the ceiling. However, from the point of view of statics, it is always better if the staircase at least partially terminates around the wall , where it is fixed by the third auxiliary anchor. However, the wall must have sufficient strength, therefore it is necessary to equip the plasterboard partition with special reinforcement, such as metal beams, “says Petr Paksi, commercial manager of JAP Future, which manufactures indoor and outdoor stairs.However, a different situation occurs with the U-shaped staircase, whose individual steps are anchored directly to the wall, so it should ideally be made of concrete to have sufficient strength The plasterboard partition is insufficient for anchoring the stirrup staircase.

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