Plaster on insulation: materials and technology

For your article on "Plaster on insulation: materials and technology," here is a brief introduction:

Plaster and insulation combined into one layer is a cost-effective way to improve the look and energy efficiency of your house. This technique gives your external walls an additional layer of protection, reduces heat loss, and stops condensation. Plastering over insulation is a wise and environmentally friendly decision, regardless of whether you are building a new home or remodeling an old one.

It is essential to select the appropriate materials and apply the right techniques in order to guarantee longevity and peak performance. There are numerous things to take into account, ranging from choosing the proper plaster and insulation to knowing how to apply them. This guide will assist you in creating a cozy and energy-efficient living space by outlining the materials needed and the step-by-step instructions for plastering insulation.

Regardless of your level of experience, this post will provide you with useful tips and insights on how to finish your insulated walls to a high standard. Continue reading to find out more about the cutting-edge technology that’s revolutionizing energy-saving products and wall décor.

Preparation for work

The following materials make up the multi-layer coating that serves as the thermal insulation facade system:

1. Insulation. Plates made of mineral wool, expanded polystyrene or polystyrene foam, fixed to the outer surface of the wall using adhesive mixtures and facade dowels.
2. A protective and decorative layer of plaster reinforced with a special mesh of fiberglass or polymer threads.

The materials utilized, their quality, and the rigorous adherence to work technology are the main factors determining this system’s longevity. Plaster and insulation combine to form one system. Its purposes are to improve the building’s energy efficiency. During the design phase, workers at a specialized organization calculate how much material is needed.

Dry plaster mixtures for insulation

It is the contractor’s responsibility to determine the volume of purchases in the case of independent finishing and insulation work. Finding the area of every wall that needs to be insulated is all that is needed to calculate the quantity of thermal insulation boards.

It is also decided if reinforcing mesh is necessary. The amount of dry mix needed for plaster requires some more computation.

Selection of materials for exterior finishing

The physical and mechanical qualities of the plaster as well as the chemical characteristics of the reinforcing mesh are the main determinants of the decorative and protective coating’s performance characteristics.

The following are the primary factors used to select dry compositions for exterior finishing:

1. specific density of the colloidal solution mixture;
2. maximum time of application of the prepared mixture;
3. permissible thickness of the decorative layer;
4. plaster mobility;
5. the degree of vapor permeability established by the standard;
6. high mechanical strength and ability to withstand tensile and compressive loads;
7. frost resistance;
8. good adhesion to the material of the insulation;
9. low shrinkage.

Only reputable businesses that produce building materials can offer these qualities. Their products are reasonably priced given their quality, and you should always ask the seller for a certificate when making a purchase.

For this kind of finishing, reinforcing meshes can be either standard or reinforced. Because fiberglass or polymer threads are used in their manufacturing, they must have a specific density that is established by industry standards.

For regular meshes, their thickness must be at least 0.47 mm, and for reinforced meshes, it must be 0.9 mm. It is required that the nominal cell size falls between 3.5-5 × 3.5-5 mm and 6-8.5 × 6-8.5 mm.

Tools and equipment required to carry out the work

The bare minimum of tools needed

Using specialized tools, the exterior plastering of the house is done by hand over the insulation.

The following positions are included in a comprehensive list of the tool:

• wide and narrow metal spatulas;
• polymer buckets for preparing the mixture and for water;
• plastic holders for sandpaper;
• polymer or rubber spatulas for leveling the plaster;
• scaffolding or climbing equipment for working at height.

The guidelines demand that all safety precautions and regulations be strictly followed, particularly when finishing work is being done on external building structures. This kind of work can only be done by specialists who have received the necessary training and hold the appropriate kind of permit. There is a briefing before any operations are carried out with them. Additionally, the area is gated off to protect both employees and outsiders from harm.

Putting in insulation made of polystyrene foam

Plastering over insulation is a clever way to achieve both a lovely finish and energy efficiency. The best plastering materials and methods for covering different kinds of insulation are examined in this article, which will walk you through the steps to guarantee a long-lasting and beautiful result. We’ll go over the necessary procedures to ensure the success of your project and offer a long-lasting, weather-resistant solution that improves the comfort and aesthetics of your house, whether you’re using mineral wool or foam boards.

Main work on plastering insulation

After the thermal insulation material sheets are securely fastened to the base, finishing operations commence.

In two steps, a decorative protective coating is created:

1. a reinforcing mesh is fixed on top of the insulation using expansion dowels;
2. the prepared plaster mixture is applied.

Reinforcing mesh can be fixed by pressing it into the adhesive composition layer, ensuring that adjacent sheets overlap by at least 100 mm. No additional work is done before 72 hours have passed. This amount of time is required for the mixture to fully dry after it is applied to the insulation.

A penetrating primer must be applied to the surface in the second stage. A wide brush or a construction roller can be used for this task. It is not permitted to omit any surface treatment steps. For the coating to polymerize, it needs to cure for at least six hours.

Completing door and window openings

The third step involves applying ornamental plaster. A float is the primary tool used in this operation. Apply a tiny bit of the mixture to it using a spatula.

The float is rubbed by raising it from the bottom and tilting it slightly toward the surface. The size of the filler fractions utilized in the finishing material should match the thickness of the plaster applied over the insulation.

The temperature and humidity levels affect how long it takes for the protective and decorative coating to dry. This time frame typically lasts between 72 and 120 hours. You can start painting the surface with facade paints once the coating has fully set.

A helpful tip is to arrange the plastering and insulation so that the newly applied coating is not exposed to direct sunlight. By doing this, the composition will not dry out too quickly and split.

There are several benefits to using decorative plaster over mineral wool insulation. Initially, the reinforcing mesh is attached using special adhesives. The overlaps between adjacent sheets are increased and a reinforced version of reinforcement is used if the surface height is greater than 6 meters.

Plaster mixture for insulation

Other technologies for wall insulation

Businesses that manufacture finishing and construction materials provide creative approaches to surface cladding. Although plaster with insulation performs worse than classical technology, it can be applied in latitudes that are warmer. The finishing material most commonly used is one that uses foamed vermiculite as a filler.

Granulated polystyrene foam insulating plaster is appropriate for both interior and exterior applications. Apart from the heat insulator present in the composition, the principal constituents of these mixtures consist of binding agents such as gypsum, cement, or lime, as well as fillers made from sifted and cleaned sand or other minerals.

Picture of a rustic home with insulation covered in plaster

This is the conclusion for the article "All about wall decoration," which was created for your website, "Plaster on insulation: materials and technology":

Plastering over insulation is a practical way to improve both the aesthetic appeal and thermal efficiency of your house. Combining these materials produces a strong shield against the outside elements that enhances energy efficiency and gives your walls a seamless appearance.

Take into account the particular requirements of your project when selecting the appropriate materials for plastering over insulation. Different plaster types, such as mineral, acrylic, or silicone-based alternatives, can offer various advantages, such as increased durability or resistance to moisture. Choosing a plaster that is compatible with the type of insulation you have will guarantee longevity and best results.

Plastering insulation on calls for precise technique and attention to detail. To achieve a smooth, polished finish, proper plaster material mixing, skillful application, and thorough surface preparation are all essential. Even though it could seem difficult, you can successfully turn your walls into a useful and attractive feature of your house if you have the correct resources and advice.

In the end, a more aesthetically pleasing and comfortable living area can be achieved by making quality material investments and learning how to plaster insulation onto walls. Regardless of your desire to modernize the look or increase the energy efficiency of your house, this technique provides an elegant and useful answer.

This conclusion is tailored to be easy to understand, free from overly complex language, and in a format suitable for your audience.

Video on the topic

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Preparation of the mineral wool surface for the installation of the Base Reinforcing Layer, priming of mineral wool

Finishing the facade of an aerated concrete cottage without insulation (bark beetle, fur coat and other textures)