Pouring concrete screed - one of the ways gender arrangement in different rooms. That it eventually is not cracked in the course of work should strictly observe the technology. Otherwise, all efforts will go down the drain.
8 most popular errors
Causes of cracking can be completely different. Here are eight of them, which are considered to be basic:
- As used too clayey sand;
- Not done prior reinforcement;
- Screed flooded with a thin layer;
- Beacons are made of another type of solution;
- Old frozen layer becomes the new incorrect;
- Not laid vapor barrier tape;
- Ignoring the use of damping tape;
- Forced drying concrete.
If the screed after setting, cracked, repaired defects is almost impossible. And even after the grouting individual sections can "walk". Conclusion: The strict observance of technology of work - the key to success.
As for the sand as one of, it is best to use a river of concrete components of the solution to fill the sexes. If it includes a large amount of impurities in the form of clay, flooded screed is likely to crack.
Laying fixture - a mandatory step. As the material is better to use a special net. As concrete layer technology must be at least 30 millimeters. If the screed is poured in concrete block, its thickness is required to be not less than 5 centimeters.
In order to obtain a perfect surface, pre-developing are beacons. To do this, use the same solution, which will be used in the process of casting. Not suitable gypsum, alabaster.
If the room is large, and at a time to fill in the floor is not possible, the old and new layers to be connected overlap. Otherwise, the defects will appear in such places.
If the substrate is excessively porous, for example, of expanded clay, it is able to absorb large amounts of moisture. Before filling the need necessarily be laid vapor barrier film.
Over time, the concrete floor can crack, and because of lack of damping tape. Such an element necessarily have to be laid along the perimeter trim premises.
It is impossible to achieve faster drying of the solution by opening windows and doors. The presence of drafts accelerate drying, but will lead to cracks.
