In the process of repair or construction plaster solutions are used, prepared on different basis - lime, sand + cement, clay, gypsum. Products under the brand name "Rotband" refers to the latter. What is it attractive if it is in such demand?
Features of plaster Rothband
With the help of gypsum compositions it is possible to obtain an ideally smooth surface, which is appreciated by masters-finishers. But such plasters have a serious drawback - they quickly "grasp", and this greatly complicates the process. First, you have to dilute the mixture only in small quantities, and this increases the working time. Secondly, something to remake, eliminate your own mistake will not work. Therefore, in everyday life, often at the expense of quality, preference is given to other compositions - they are much easier with them.
The manufacturer "Rothband" took this into account and introduced into the mixture special components that somewhat slow down the process of solidification of the mass applied to the substrate. In addition, there are also adhesives in the composition, which increases the reliability of the "adhesion" of the solution to the surface. Work has become much more convenient.
The color of the dry mix varies, for example, pinkish, not just white. This should not be misleading. The fact is that almost all the compositions under this brand, which can be found on sale, are manufactured on the territory of the Russian Federation. The main producers are the Moscow, Astrakhan regions, the Krasnodar Territory, Chelyabinsk and the "northern capital".And each introduces its own components that do not degrade the basic characteristics, and which affect the shade.
The presence of plasticizers in the mixture ensures that, after drying, the layer will not become covered by cracks, which is typical for cement-sand compositions.
Characteristics
- Consumption( recommended, kg / m²) - 8,5.But this is if the layer is 1 cm.
This requires an explanation. In practice, there are surfaces with different defects, therefore it is not worthwhile to withstand in any situation exactly 10 mm. The minimum layer thickness is 0.5 cm, but the maximum depends on the "orientation" of the substrate. For vertical( wall) - up to 5 cm, for horizontal( ceiling) - no more than 1.5 cm.
The size of granules( mm) - no more than 1,2.
Time of
- Final hardening( days) - up to 7.
- Maturation of the diluted mixture( min) - 10.
- Working condition( usability, min) - up to 25.
- Drying of the layer in 1 cm( min) - up to 60.
This is also worth commenting on. Much depends on the conditions of use. First of all, the temperature in the room and humidity. Plus - the presence of drafts, the correctness of the preparation of the solution( consistency) and so on. Therefore, the time indicators can be considered indicative.
- Operating temperature range( ºС) - from +5 to +35.
- The density of the solidified mass( kg / m³) is 950.
- Shelf life( months) - no more than 6.
Price
As a rule, "Rothband" is sold in packagings( paper bags) of 5 or 10 kg( although there are more voluminous- 25 and 30).
The average price is 12 rubles / kg. That is, for a 30-kg bag you will have to pay 360 rubles. It's enough for about 3.4 m².
Specificity of application
Given that "Rothband" is more expensive than many analogues, it is advisable to apply this plaster with the last, "finishing" layer on the other - cement-sand. Since it is more "rough", the gypsum will give an absolutely smooth surface. For example, for coloring.
In some cases, "Rothband" can be used to level the surfaces, trimmed or mounted( for example, partitions) from GKL or GVL, if the master worked with sheets "Unskillful hands".With large uneven joints, significant differences in putty is unlikely to help.
Note!
- Plaster "Rotband" - for indoor work. For outdoor it does not apply!
- For manual application only!
Useful advices
In translation into Russian "Rotband"( Rotband) - "red tape" .It would seem, what difference does it make to us, how did the manufacturer "call" its goods? And there is a sense in this. The fact that under the brand "Knauf"( Knauf) is produced several varieties of plaster mixtures. On each package, depending on the content, a colored strip is applied. If it is red, it means that in the bag it is the dry gypsum mixture - "Rothband"( for those who can not read or have poor eyesight).
The consumption indicated on the package can serve only as a guide for us - a minimum. Producers, determining the numerical value of the parameter, rely on a high-class specialist-plasterer. If the work is carried out by "mere mortals", then the applied layer is as thin as it is implied, it will never work. Practice has shown that, determined by the volume of procurement, the recommended consumption of the composition should be increased not less than 15%.
It is also necessary to specify the release date of the mixture. Like any similar composition, "Rothband" is characterized by a period of suitability.
What's the point? In production, the stamp "stuffs" the machine, and the time indicated on it constantly changes. And if it is the same on all packages, then there is no doubt that "Uncle Vasya" walked around the finished goods warehouse and stamped "left and right," indiscriminately.
A branded hologram is necessarily placed on bags of licensed manufacturers. It is necessary and pay attention to this.
