Recommendation points
- Required tool
- Surface preparation
- Sticking mineral wool boards
- Reinforcement of the surface of the slabs with mesh
- Plastering bark beetle
- Painting or without it
You always want to have a nice and warm home. One of the solutions to this issue is the device for insulating the walls of the house with plates of mineral wool, followed by applying bark beetle facade plaster to them. The use of this option is justified from the point of view of economy and the ability to do this work with your own hands..
Required tool
- Spatula 45 cm wide.
- Spatula 10-15 cm wide.
- Notched trowel, tooth height 10–12 mm.
- Plaster trowel.
- Metal brush for plaster.
- Scissors, knife.
Surface preparation
The wall should be cleaned of old paint, swollen plaster, and leveled as carefully as possible in one plane. This will allow you to get a fairly flat surface already when gluing the insulation, and this, in turn, will affect the finishing surface of the wall and its appearance. If the surface of the wall is not even enough, after cleaning it should be pre-leveled with a layer of putty for outdoor use completely or in places, depending on the quality of the surface. If the wall has a loose surface, crumbling joints of brickwork, irregularities of more than one centimeter along the surface, then it is better to level the surface with plaster at the initial stage.
Sticking mineral wool boards
To complete the work, you will need slabs with a density of 125-150 kg / m3. Boards of lower density are too loose for plastering. The thickness of the slabs depends on the thermal characteristics of the walls of the house, but in most cases a 50 mm slab is used. The wall is primed with a deep penetration primer.
For gluing the boards, a universal glue for gluing mineral wool is used. First, the glue is applied in small slides over the entire surface of the slab, and then it is leveled with a notched trowel. Next, the slab is glued to the wall, pressing it evenly over the entire surface. You need to press hard enough, but without causing deformation of the plate itself. When gluing, the boards should be aligned in all planes. If it can be seen that the board, due to the unevenness of the wall in any place, does not adhere to the applied layer of glue, then remove it and add glue. To make this happen less often, you need to level the wall surface well..
In most cases, the presence of the protruding part of the basement of the house allows the first row of cotton to be supported on it. If there is no such protrusion, then some structure should be provided for the stop of the first row, this can be, for example, an aluminum base plate or a profile for gypsum board.
We try to carefully align the first row of mineral wool boards horizontally. This will make it possible to do without additional adjustment of the plates to each other in the future. Start the next row with half of the slab so that the vertical seams of the first and second rows run apart. Next, row by row, we cover the entire surface of the walls of the house. Cut off mineral wool slabs at the junctions to windows and doors along the line of the existing slope.
The next step will be to fix the glued plates with an umbrella dowel. The dowel should be installed at the corners of each plate, both below and above the running row, as well as in the center of each plate. There are many opinions on this, but this option has never failed. You should not try too tightly to press the dowel into the cotton wool, just a snug fit over the entire surface of the cap is enough.
Reinforcement of the surface of the slabs with mesh
After gluing and fixing the boards with dowels, the joints of the boards are glued and reinforced from the front side, and not between them. With a tight fit of the plates to each other, gluing them to one another is not required. The same glue is applied to the joint with a spatula, approximately 10-15 cm wide. Further, the strip cut from the reinforcing mesh is pressed with a spatula into a layer of glue, the thickness of which is approximately 0.3-0.5 cm. This operation removes irregularities along the seams between the plates , the heads of the dowels are hidden, and give the surface of the thermal insulation a single structure.
Similar to gluing joints, the entire surface of the slabs is reinforced with a mesh. For reinforcement, any plaster reinforcing mesh made of fiberglass, polypropylene, polyethylene is used. It should be noted that the mesh of the mesh should be between 0.3–0.5 mm and that the mesh should be more rigid (approximately like a tarp, not like a fabric). Although this is not essential, it is just easier to work with such a grid. A layer of glue is applied over its entire width with a spatula, and then the mesh is applied and pressed into it. There are various mixtures instead of glue for this operation, however, the use of a universal glue for bonding mineral wool boards is most common. After the applied layer with the mesh has dried, the entire surface of the insulated walls should be repacked with glue. The layer should not be thick – putty to strengthen the surface and even better leveling.
Corners, slopes of windows and doors are reinforced with special plastic corners with strips of reinforcing mesh glued to them. They are also pressed into the adhesive layer and then re-putty.
Plastering bark beetle
The bark beetle should be applied to the previously primed surface with a metal plaster trowel, using a spatula 10–15 cm wide for work. With a spatula, apply a portion of the plaster mixture onto the grater, and then smoothly move the grater onto the wall. At the stage of applying the bark beetle, the direction of movement of the grater is not too important, find a hand path that is convenient for you. The thickness of the plaster layer should be comparable to the diameter of the particles in the bark beetle composition. Feel the crumb particles in the mixture with your fingers and try to make sure that the layer of plaster covers the wall without gaps, but is not thicker than the hard crumbs in the bark beetle. This is approximately 2–3 mm, depending on the manufacturer of the compound. Five millimeters is already a lot in most cases. We do not level the wall with a bark beetle, but only decorate it. Without experience, do not apply large areas at once, but do not stain the bark beetle on the wall. Apply an area of 3-4 m2 from top to bottom and from a corner, for example, to a window slope. Pay attention to the time. First, select an area that you will cover with plaster in no more than 20-30 minutes. After covering a section of the wall with plaster, the bark beetle proceeds to giving it texture.
Shaping is done with a polyurethane plaster trowel. The easiest thing to start with, but this does not mean bad, is to give the plaster a vertical pattern. To do this, with not strong, uniform movements of the grater from bottom to top and top to bottom, we draw on the layer of the applied bark beetle. Keep in mind that the plaster layer is small, do not overdo it. When applying a vertical pattern, movements with a float from side to side or circular are not allowed. Do the job carefully, just one stroke with a float is enough. Small particles present in the plaster will paint small chaotic grooves on the surface.
Another option for giving texture is to apply the pattern with uniform circular movements of approximately the same diameter. Don’t be in a hurry. Make smooth, uniform movements.
When working with a bark beetle, it should be borne in mind that for the uniformity of the pattern over the entire surface of the wall from corner to corner, each of the applied areas must not be allowed to dry completely. Then at the moment of giving the texture to the next section of the wall there will be no visible transitions of the pattern. So, having finished giving texture to the first applied area, immediately proceed to applying the next one, and then giving texture to it, until you have passed the entire wall from corner to corner.
Painting or without it
Manufacturers produce decorative plaster bark beetle and the like in different colors. The choice of color is yours. However, working with white and gray is easier initially. And having a desire to paint a house on top of plaster using color separation of various sections of the wall, you can, without experience in working with a bark beetle, divide a large wall into separate areas of application. Subsequent painting will hide the boundaries of plastering bark beetle.
Can you please provide more information on the process of decorating the house with facade plaster bark beetle insulated with mineral wool slabs? How effective is this method in terms of insulation and durability? Are there any special considerations or precautions to be aware of when using this material?
Decorating a house with facade plaster bark beetle insulated with mineral wool slabs involves a multi-step process. Firstly, the exterior walls are prepared by cleaning and ensuring they are even. Then, a layer of adhesive is applied to fix the mineral wool slabs onto the walls. The slabs are secured with a mechanical fixation system. Once in place, the slabs are covered with a thin layer of adhesive mortar, followed by a layer of facade plaster bark beetle. This decorative plaster provides an aesthetically pleasing finish.
In terms of insulation, this method is quite effective. Mineral wool slabs have excellent thermal insulation properties, helping to reduce heat loss and improve energy efficiency in the house. They also contribute to sound insulation. Moreover, the facade plaster bark beetle provides an additional protective layer against external elements.
In terms of durability, this method is known to be quite robust. However, it is important to ensure proper installation to maximize its longevity. Special considerations include checking for proper ventilation to prevent condensation, ensuring the compatibility of materials, and following specific guidelines provided by the manufacturers. Additionally, regular maintenance and inspection should be done to identify any signs of damage or deterioration, such as cracks or surface defects, and address them promptly.
Overall, decorating the house with facade plaster bark beetle insulated with mineral wool slabs is an effective method for insulation and provides durability. Following the appropriate precautions and maintenance guidelines will help ensure its long-term effectiveness.