Many property owners are thinking about why stucco a wooden house. But we should not forget that wood is a rather vulnerable material, which is why reliable protection from negative external factors does not hurt. As one of the effective methods of protection, plastering on wood acts. It can be purchased ready-made at a hardware store or made independently.
Why wood plaster
In order not to plaster the house after its construction, it is possible to use a special beam during construction, which is impregnated with chemicals at the production stage, which does not make it environmentally friendly. Such houses turn out to be more attractive in appearance. However, if a timber was used for the construction, which was not previously processed, then it will have to be plastered after completion of the work. This will protect the material from mold and rot, as well as damage from rodents and termites.
When to plaster
The material does not dry out, gaps will not appear on its surface and in the structure, cold and damp will not penetrate inside the house. However, with the goal of protecting your home, it’s important not to overdo it. If frame houses can be plastered immediately after the arrangement of the roof, then timber beam structures from the logs must survive a year after the completion of construction. It’s better to start any work after 1.5 years. During this time, the walls will shrink, the protective layer of plaster will not be covered with cracks and will not lag behind the surface of the facade.
Mixing mortar for wood plaster
Wood plastering must be properly prepared. Wood has high adhesion qualities, which is why different types of mixtures can be applied to it. These include sand, cement mortar, lime plaster and decorative gypsum mortars. If you decide to use a cement mortar for plastering, then it can be prepared from 1 part cement and 4 parts sand. The components are mixed in dry form, and after obtaining a homogeneous mass, water can be added to them.
The lime-cement mortar is prepared from 1 part of the lime test, the same volume of cement and 3 parts of sand. The stronger the solution, the less sand to add. Such stucco on wood has some cooking features. It is important to observe separate mixing. In a separate container, it is necessary to combine cement and sand, the lime dough is bred separately, which should have the consistency of milk of lime. To obtain the last component, the selected volume of dough must be diluted with the same amount of liquid. Milk is used for diluting cement and sand. Such solutions are not afraid of moisture, so they can be used for plastering indoors and outdoors.
Wood plaster is often made of lime and gypsum. It will result in a solution of three parts of a lime solution and part of gypsum. For convenience, you can prepare a classic lime mortar, as well as carry out individual batches with gypsum. A large amount of such a solution should not be prepared, because it hardens quite quickly. Gypsum is usually used for interior work, where high demands are placed on the performance of the surface layer of walls. In order for the composition to find a color, coloring pigments can be added to it. After you have decided whether it is possible to apply plaster on a tree, you should find out that to give it a special effect, wax mastic with CMC glue is applied to a dry surface.
How to apply plaster
If you have not prepared the necessary set of tools and have not carried out preliminary work, then repair will not be possible.
For the necessary work should prepare:
- plaster mesh or shingles;
- container for kneading;
- concrete mixer;
- a shovel;
- rule
- graters;
- lighthouses;
- brush;
- twine;
- level.
Caulking slots
Before applying the plaster to the wood, you need to pierce the cracks. If the house was built of logs, then in its walls it will be possible to find holes and cracks that are previously caulked with mineral wool or tow. If there are large recesses between the logs, they can be filled with wooden slats, in which case the flow rate of the solution will decrease.
Shingling and lighthouse
Before you apply facade plaster on wood for outdoor use, you need to fill the shingles. These works include the installation of wooden 5 mm slats, the width of which will be 20 mm. If a circular saw is available, then you can cut the blanks yourself from any board. Elements are packed in two layers. The first are installed at an angle of 45 ° relative to the horizontal surface. The distance between the workpieces should be 5 cm.
The second layer is laid on top of the first at right angles to it. As a result, it will be possible to get a smooth mesh pattern. Before the exterior plastering on wood is carried out, the shingles must be wetted and installed. This will reduce wood cracking or cracking. In some cases, this reinforcement method is replaced by a plaster mesh. However, the layer of the mixture should be quite massive, so the reinforcement should be made reliable.
The thickness of the plaster layer should be determined from the second layer of shingles. This parameter varies from 15 to 20 mm. In order to ensure a flat surface, beacons should be used. It is necessary to fill them from the corners, setting the line at the right distance from the surface. Its evenness should be checked by level.
Spray and primer
As protection of walls you can choose decorative plaster. Wood this way will protect. At the next stage, it will be necessary to spray the main solution, however, it should have a more liquid consistency. Sometimes 200 g of PVA glue per bucket is added to this mixture. If you do not have experience, then you need to start spraying with your hand. Once you get comfortable, you can use a trowel or trowel.
Throwing the solution on the walls, you should get a 10 mm layer. All cavities, irregularities and indentations must be covered. It is necessary to start work from above, gradually moving down. This will be more convenient and practical, because the reverse order can lead to waterlogging of the lower layer. Excess water will flow down. Aligning this layer is not necessary, but you need to navigate the lighthouses, removing the excess rule.
Even with the advent of more modern materials for decoration, decorative plaster is often used. The tree on the wall provides for the need for just such protection. The next step is to prime the walls, which involves applying a second layer of plaster. It is necessary to carry out work on a slightly dried layer, however, the spray should not be overdried. The primer will be 7 mm or less. With the help of these manipulations, it will be possible to smooth out all the irregularities and seal the cavities.
Specialist recommendations
As soon as the plaster dries, which will happen in four days or less, you can finish the grout using an emery cloth. It is important to leave the plaster layer to dry by itself, artificial drying should not be used, as this can cause cracks. The house may have a fever, but the walls cannot be dried with a building hairdryer. For the same reason, their freezing is not allowed. That is why the application of facade plaster should be carried out in autumn or spring.
Coating and grouting
In order for the outer plaster layer to look attractive, it will need to be treated with a fixing coating. The solution for this is prepared from the same mixture, which should have a liquid consistency. The mixture is filtered through a mesh and applied with a 2 mm layer. As soon as all the main stages of work have been completed, and the plaster has dried, it is treated with a grater, which needs to be moved around. If necessary, grout areas can be moistened.
Methods for applying plaster on wood
Gypsum plaster is applied to wood after mixing the main components. However, dye can be added to the ingredients at the preparation stage, it is added in a ratio of 1 to 10. Sometimes the colorant is added to the final solution. There is another way to give the surface a shade. To do this, the solution with the dye is diluted in equal proportions, and in the final work with chaotic uneven strokes, the composition is applied to the working surface using a sponge or roller. You can use a special gun for this.
The application of building material usually takes place in two stages. First, the mixture is poured with a trowel, leveled with a roller or brush, and after the surface dries, it is given the necessary look. Decorativeness can be achieved by the speed of movement of the tool and the force of pressing it. The solution should be applied in one direction - from bottom to top or in circular motions.
Cement plastering wood will last much longer. Its application can be carried out with a broom or stick. The tool is dipped into the solution, and then it is struck 25 cm from the wall. The stick must be held parallel to the work surface. Obtaining the same texture as a result is quite difficult, so work must be done with caution, not rushing anywhere.
Conclusion
If you still cannot choose which composition to use for plastering wooden walls, then you should pay special attention to the gypsum mixture, which has many positive features. After treating the walls with this composition, they do not lose their ability to breathe.
As for cement mortars, they have advantages over gypsum. The pluses are frost resistance and moisture resistance, so cement often quite often forms the basis of the compositions that are supposed to be used to decorate the facade. Due to the fact that preparing wooden walls for the plastering process is rather laborious, many consumers purchase pre-processed timber for building a house. It does not provide for the need for additional decoration, but the building looks more attractive than the one that was covered with cement, lime or gypsum mortar.