What types of plaster are available on the construction market? What are the differences between them and why should they be acknowledged? These questions will be answered in this article, prepared by experts.
Knowledge about the properties of individual types of plaster will help you find out in the market offer - learn their technical parameters, check the application conditions or the possibility of non-standard coloring. It will also help you to choose other façade solutions, such as the type of insulation that will match your plaster.
Generally accepted division is distinguished by: mineral, acrylic, silicate, silicone and silicate-silicone plasters, so-called si- si. The popularity of plasters depends on various factors - technical and economic, but also from the habits of construction companies.
Structuring plasters, starting with state-of-the-art technology, will help investors to understand the product segment better.
Silicone and silicone-silicone plasters
Based on silicone resin, vapor-permeable silicone plasters are among the latest in building chemicals.
Silicone plasters are becoming increasingly popular among investors, combining the best of acrylic and silicone products - flexibility and resistance to dirt. Consumers appreciate quality and durable solutions for which they are able to pay more, and avoid other additional expenses, such as repair or renovation of the façade.
Another, new product group is the so-called "si-si" plasters, consisting of silicates with silicone resin admixture.
Silicone-silicone products have features similar to silicone plasters.
They show durability and protect the facade from dirt, so if the it is exposed to faster loss of cleanliness, for example, our house is located near a busy street, you can decide to use this type of plaster.
The market for thin-walled plasters is constantly developing. New technologies and solutions appear. In 2016, Weber introduced AquaBalance hydrophilic plaster into the domestic market.
AquaBalance's unique technology is based on an unprecedented microstructure of the coating - microwaves cause the coating to be wetted by water (hydrophilicity). Airborne water vapor does not create droplets, but is rapidly spread on the plaster surface. This increases the evaporation surface - the wall dries very quickly. As a final effect there is practically no water film on the wall, and algae and fungus have no chance on development.
For the period of greatest popularity of potassium based glass products in Poland, the first decade of the 21st century is indicated. Silicate plasters form a durable, non-flammable facade and have very good mechanical parameters. They are distinguished by high water vapor permeability, so they work well in mineral wool insulation systems. Unlike acrylic plasters, they do not attract dust particles, but on the other hand, they are not so resistant to more demanding weather conditions during application.
Silicate plaster applications require several days of stable temperature and humidity of the weather. The best time to work with silicate plasters is from May to early October. They are available in a range of popular colors, but because of their chemical composition, it is impossible to obtain, for example, a very intense orange color.
Very popular in the 80's and 90's, acrylic plasters are immediately ready to use and dyed in the mass.
Unlike mineral plasters, acrylic products work with any kind of pigment, meaning almost unlimited color options. Their advantages include high flexibility, the ability to transfer thermal stresses, resistance to sunlight, which allows to choose darker colors of the facade.
Acrylic plasters are resistant to harsh weather conditions, like lower temperatures (above + 5 degrees Celsius) and high humidity. Thanks to this, the application achieves the desired uniform color and avoids efflorescence even in fickle weather.
Water-tight acrylic plasters are recommended for use on styrofoam-based systems. Acrylic plasters are classified as flammable, so they can slightly lower the fire classification of the entire facade system while meeting the standards required in this area.
Mineral plasters are characterized by very good water vapor permeability, so they are a solution that works well with mineral wool. They are non-flammable.
Their "natural" color is greyish, rarely colored in the mass, so they need to be painted twice with facade paint. They respond to weather conditions. When applying mineral plasters, the air humidity should be considered as air and water vapor may exhibit a chemical-physical reaction and a white efflorescence will appear on the wall.
Estimating the length of work should take into account the way the preparation of mineral plasters. They have a powder form, so they need to be mixed with water, so the application process takes longer. In the construction schedule, you also have to paint twice with the necessary technological breaks.
How to choose plaster?
"In the cost analysis, it is worth considering all the factors that ultimately make up for our facade: the price of plaster and paint and other dedicated products, as well as the execution time and application conditions. This will allow you to choose the most economical solution "- convinces Krzysztof Siemak, product manager from Weber's facade systems. "The cost of finishing a facade is a fraction of the total budget of a home, so the basic choice criterion should not be savings and meeting the conditions for a particular facility," he adds.
A good idea, besides looking for the right literature or reading the news available online, is a conversation with a specialist who will tell us what plaster is suitable for our house.
For more information visit the manufacturer's website.
In order to choose the right plaster for yourself, please visit www.realbud.com!