Of course, plaster in the ceiling according to lighthouses (and without them) is a very laborious process, but the result can surpass all expectations. So, the applied Venetian plaster on the ceiling, imitating a smoothly polished natural stone, visually increases the height of the room and gives the house a beautiful view. Textured plaster on the ceiling, if you slightly connect creativity and fantasies, can give an absolutely unique and exceptional appearance.
Ceiling plaster technology – preparatory stage
KNAUF ROTBAND gypsum plaster – Video tips on applying
The technology of plaster in the ceiling makes special requirements for the careful implementation of the preparatory phase. The surface prepared and cleaned of dust is treated with a primer of deep penetration. It provides a better grip of the surface with the solution, improves the protection of the base from moisture, fills the pores and microcracks. To prepare it is advisable to use primer -grouping – it is they who are intended for this. Plaster of the ceiling made of drywall requires special primers. We apply the primer with a layer of the same thickness – two to three millimeters. With good absorption of the primer into the surface, let the first layer dry, and then apply one more on top. In rooms with high humidity, special waterproofing compounds are used. The places of passage of pipes and joints of the plates are processed with a brush, and even areas – a roller. At the end of the work, we give the surface time to dry well.
Having finished preparatory work, we proceed to eliminate the most voluminous cracks. To do this, you will need a bag and putty, which is specially designed for draft work. A feature of this putty is its increased, in comparison with analogues for finishing work, granularity and density. We thoroughly impregnate the putty with a pcquet with a pcquet, and then we will pile up the cracks and cracks. To prevent an increase in the size of the existing cracks and the formation of new ones, we reinforce the joints of the slabs with a net. At the edges of the slabs we apply putty, into which we press the net. We press the mesh into the solution to the center of the hardening mixture.
Ceiling plaster – choice of solution
Video – Decorative plaster “Old Castle”
To align the ceiling, plastering mixtures made on the basis of cement or gypsum are used. Plaster made on the basis of cement and lime is distinguished by resistance to getting wet and absorbs moisture well. But still this material is used very rarely. Firstly, cement is poorly held on concrete, and secondly, its elasticity is not large, which is why even minor surface deformations cannot be withstanded. This is especially true when it is necessary to make repairs immediately after the end of the construction, and the building will also give a shrinkage. Thirdly, the ceiling finish with such a mixture is a very difficult process that requires a lot of experience.
The building materials market offers for plaster a vast selection of dry gypsum mixtures. Among them is one of the inexpensive and common -“Rotband”. Gypsum mixtures have, in contrast to cement-license, relatively greater elasticity, they are much easier and well adsorbed moisture. They can be used even in a new building. Mixtures made on the basis of gypsum dry faster, they form less dirt in the process and are considered more environmentally friendly.
Work technology
Yourself plaster with your own hands – a video of all stages can be viewed on the Internet – it is performed in the usual way. We apply a pre -prepared solution with a grater or a metal spatula moistened in water so that the working solution does not stick to the tools. So that voids and shells do not form in the applied layer, we press the grater tightly to the ceiling. Having applied the first layer, we take the mesh roll, slightly unwind it and place it above your head. The mesh with a spatula or grater is pressed with a ksyrome layer, continuing to simultaneously unwind the roll. When using a galvanized metal mesh for reinforcement, it is necessary to apply significant efforts to push the solution through the cells of the solution. After fixing the mesh, we begin to apply the second layer, after which we level it and, extending the rule, remove the excess plaster. Subsequent finishing work can be carried out after the surface is completely dried (3-14 days).
Lightakers greatly facilitate the work. On the surface of the ceiling, where we will install them, we drill 5 holes for each lighthouse, into which we mount the dowels and screw the screws. Using laser or bubble levels and fishing line, we align along each line in the same plane the extreme hats of the screws. After that, we align the rest of the heads in the line. By this technique, we set the level for all lighthouses. We put clips on the screws, place metal beacons, and then fix them with plugs. Once again, on all lighthouses, we measure the level. In the workspace, which is located between the lines of the lighthouses, we throw the solution and stretch it with the rule until the voids and the formation of a flat surface disappeared. Where the solution was not enough, it is again thrown and re -extended by the rule. Speech alignment with great bumps is carried out in two or three layers. Previously, each layer is primed, otherwise the plaster is cracking, relaxed and falling off.
Stucked wooden ceiling
Wooden ceilings before plastering require more thorough preparation. It cannot be leveled with a thin layer of plaster, because there are many cracks and bumps in the draft base.
Before plastering a wooden ceiling, it should be poured with a special net or boat. We stuff Drani in two layers. For the first layer, thin and uneven drani is used, about 5 millimeters thick, the distance between the rails of 5 centimeter. The second layer is stuffed from more high -quality rails, which have a flat facial surface and edges. Net them to the first row at an angle of 90º so that there are 5-10 centimeters in the ceiling. It is necessary to ensure that all the hats of the nails scored in the fight do not go beyond the surface of the racks, then there will be no problems with plaster.
The alignment of the ceiling is carried out in two ways – throwing the solution, or using a spatula by smearing it. Plastering ceiling, as a rule, in several layers, because a thick layer made at a time will definitely crack. Between applying layers from a cement mortar it is necessary that at least 5 hours pass, while when using a lime solution, there is enough aging of 20 minutes.
