If you decide to lay the floors, then before that it will be better to fill the screed. This is a rather complicated process that requires a lot of time and certain skills. The most important thing is to prepare the surface well and clean it with dust and dirt.
A screed is a layer between the lower and upper parts of the floor.
Couplers come in several forms:
- Dry. These are sheets of large size from 15-30 mm.
- Wet It is a mixture of water and cement. At the moment is the most common.
- Semi-dry. It differs from wet in that less water is added to it.
The screed is laid in one or two layers. There are also continuous (it is attached to the main coating layer) and floating (does not adhere to anything) screeds.
In order to smoothly fill the screed, it is necessary to set up beacons. A lighthouse is a direct guide made of metal. From the wall, beacons are best placed in 20-30 centimeters.
As a solution to be poured, it is best to purchase cement . It should be diluted as indicated in the instructions. Be sure to look at the expiration date.
There are times when a person bought expired cement and poured it on the floor. As a result, the mixture will either not be able to mix to a homogeneous mass, and you will not be able to pour it, or fill in expired material the next day your floors will swell or crack. Cement is best mixed with sand.
There is also material such as sand concrete, but it quickly shrinks, so you may need to spend more material.
It is better to start pouring the floor from the corner. Experts recommend not to pour the cement close to the wall, otherwise it may crack.
After pouring the screed, it must be periodically moistened for about 10-14 days, otherwise the screed will crack. The drying process of the screed is quite long, so if you are laying laminate or parquet, it is necessary that the screed dries for at least 20 days.
Choosing gypsum for filling the floor, you also will not miscalculate. It is very soft and easy to lay screeds. Dries in 1-2 days. But, it is not suitable for laying in rooms with high humidity. Gypsum is best poured under a wooden floor.
Concrete is similar in composition to cement, the difference is that aerated concrete is added to the mixture.
Self-leveling mixture. Sold ready-made and suitable for different floor coverings.
Dry screed. These are plates which in their composition are similar to drywall. The main advantage of such a screed is that you do not have to wait for it to dry.
After the screed is filled in, you need to check the work. This is done in several stages:
- It is necessary to inspect the screed, the color should be gray, without cracks.
- We check the flatness using a 2 meter rail.
- Using the level we check the surface slope.
- It is necessary to tap the screed in order to find out if there are voids in some places. To do this, you can take a bar. Sound from knocking should be firm and sonorous.
If you answer the question why it is impossible to fill the screed without taking into account the flooring, then we can say that a different coating requires pouring a screed from different material.
Do you know why it is impossible to fill in a coupler without taking into account a floor covering? Share your experience in the comments.