No one is immune from cracks in the ceiling. As practice shows, in the apartments of the old fund they appear in nine out of ten cases. The situation requires a major overhaul of the ceiling, careful repair of cracks. Our tips site will tell you how to do it in just five steps.
In apartment buildings with concrete slabs, ceiling cracks are almost inevitable. They can appear due to the long service life of the house or shrinkage, violation of construction technologies, sudden changes in temperature. In any case, you have to go through five stages to correct the situation. You will need: spatulas, non-shrinking putty, finishing putty, polyurethane foam and reinforcing mesh for plaster. And a stepladder or trestle to get to the ceiling.
Step one– remove the old finish. Not only paint and wallpaper, under which cracks are clearly visible, but also all putty and plaster. Use a tough, sturdy construction trowel, chisel, hammer, screwdriver to reach the concrete base and clean the entire joint. Do not be afraid that as a result, the area of work has increased significantly! If the flaking finish is not completely removed, the likelihood of cracking remains high. It is better to do everything once efficiently than to redo it in a year.
Step two– the base of the ceiling, that is, concrete slabs, must be covered with concrete contact. This is a polymer dispersion, a primer with quartz sand in the composition. The concrete contact will serve as a connecting bridge, significantly increasing the adhesion of floor slabs. In addition, the composition has a strengthening property, which is important for the prevention of cracks..
Step three– it is necessary to blow out the crack between the floor slabs with polyurethane foam. It will penetrate as deeply as possible and completely fill the space. Excess foam must be carefully removed with the same spatula, an indispensable assistant in the process of all work.
Step four– use a reinforcing mesh and non-shrinking putty. For example, “Fugen” or “Uniflot”. Reinforcing plaster mesh is attached along the entire problem area and covered with putty.
Step five– a plastic, soft finishing putty is used to finally level the ceiling, make it as smooth as possible.
That’s all. Now the ceiling can simply be painted with water-based paint, how to do it yourself, the portal described in detail.