Properties of
frost resistant plaster As with any other construction mix, facade frost resistant plaster has its characteristics. As a rule, they are indicated on the packaging. This is necessary in order for you to have a clear idea of the conditions for which it is intended. Let's list some of them:
- Does not form shrinkage and provides absolutely flat surface.
- For frost resistance - can withstand more than 50 cycles.
- Features high water resistance.
- Used in climatic conditions with a temperature of -40 ° C to + 60 ° C.
- The drying time of one layer is approximately 24 hours.
- Prevents cracking and creates a durable and durable coating.
Technology of applying frost-resistant plaster
The plaster of the facade of the house begins immediately after surface preparation and solution preparation. The substrate must be flat, clean and firm. It is necessary to remove old paint, grease and oil contaminants from it. Degrease them can be 5% of the composition of soda ash. The remnants of the solution are washed off with a brush previously moistened with water.
The ruler determines if there are any irregularities and deviations in the vertical( should be no more than 10-15 mm).If there are cavities less than 15 mm, then it is important to seal them with a special leveling compound. If the deviation is more than 15 mm, then it is necessary to install reinforcing steel mesh. Very small irregularities( less than 10 mm) can be cut with a chisel, and after leveling with a mortar.
If you have an absolutely clean and smooth surface in front of you that does not need alignment, you need to make a notch for better adhesion. It looks like a shallow groove. After their application, the dust must be removed with a brush moistened with water. If you do not wash away the dust or the remaining dirt, this will have a bad effect on the adhesion of the material to the surface.
Wall plaster solution is prepared according to the recipe specified on the package. Usually 1 kg of dry composition is diluted in 0.2 liters of water. For one bag with a total weight of 25 kg, approximately 5 liters of water are taken away. The mixture is then mixed by hand or with a drill with a special nozzle. After it is aged for 5 minutes and re-mixed. If the solution is excessively thick, then some water is added to it.
Apply "winter plaster" by the "spraying" method. This method requires some skill. On the base with a sharp and powerful mixture. It is important to clearly imagine what amount of material is necessary and evenly throw it. In this case, the thickness of the plaster layer over the entire surface should not be more than 2 cm. At the final stage, after the plaster has hardened a little, but has not yet completely dried out, grouting is done.
Recommendations and precautions
Work must be carried out in special rubber gloves, gauze bandage and goggles, as the composition should not be allowed to enter the eyes. If this still happened, then you should properly rinse them with water. After the work done, it is important how to wash your hands and clean tools. The remaining dry mix is tightly closed and stored until the next application.
It is also important to carry out work under certain conditions. The air temperature should be from -10 ° C to + 30 ° C, the humidity level should not exceed 70%.The time required for the drying of 1 layer is approximately 24 hours. It is possible to apply a second layer( if each of them has a thickness of up to 30 mm), but with an interval of 24 hours. Initial reliability and strength appears only after 3 days.