- 1 Cement-sand screed floor with their own hands. What is it? How long dries?
- 2 Advantages of cement-sand screed of sand-concrete
- 3 Stages of performing floor screed with your own hands
- 4 Removing the old flooring
- 5 Why do we need “lighthouses”?
- 6 How to properly prepare the mixture with your own hands
- 7 The process of pouring a screed of sand-concrete is the final stage. How long does the mortar dry?
Often enough, repairs in the house is accompanied by a huge number of problems, the appearance of which is simply impossible to predict. That is why the implementation of repair work should be taken seriously and think through the order of their implementation in the future. Sandcrete screed with your own hands is no exception. Since in this case, everything must be perfect, because it is from the high quality of the floors depends on what to obtain the repair of the house.
Cement-sand screed floor with their own hands. What is it? How long dries?
Floor screed is used to level some surface. In the process of performing the work, a specialized mixture of sand, water, cement, as well as some additives is used.
It should be noted that the above method is quite common among the owners of out-of-town baths. As with its help, it organizes the drainage of waste water. Also, cement screed allows you to create a perfectly flat surface. How long does it dry? This process will take about four weeks.
Advantages of cement-sand screed of sand-concrete
The above type of floor screed has a number of advantages that have led to its popularity. The features should include:
- high strength, density and reliability. The floor coated with such a mortar resists alkali, acid and moisture very well;
- durability. The service life of screed from sand-concrete is counted in decades;
- cement layer perfectly conducts heat, which in most cases is used for the device of the heating system;
But the cement-sand screed with their own hands has some minor disadvantage – the process of performing the work is quite labor-intensive. But many people ask the question, “How long does the screed dry?” The answer: screed with a thickness of 30-40 mm will dry 28 days.
On average, one square meter will press about 90 kg of cement board, the density of which is quite large, with a thickness of about 5 cm. It is because of this that this method is used only when the substrate allows it.
If you consider the accepted technical standards, the smallest thickness of the screed must be 3 cm, otherwise the coating will crack when drying. The upper limit is about 7 cm. As with a greater thickness the cost of the work will be quite high, as well as the material for the filling will require a lot.
Stages of performing floor screed with your own hands
In order to perform the cement-sand screed of sand concrete with your own hands qualitatively and it served without complaints the number of years you require, it is necessary to clearly follow the rules of the work and take into account some nuances.
Work on the floor screed from sandcrete is divided into the following stages:
- removal of the old coating;
- installation of beacons;
- preparation of cement-sand mixture;
- pouring the screed.
Let’s consider each of the stages in more detail.
Removing the old flooring
Quite often it happens that you want to remove the old linoleum and lay a new one. But once you get rid of the old flooring and discover the old fallen into disrepair. This is when you should consider removing the old cement flooring and pouring in the new flooring.
For quick removal of the old screed, it is best to use a hole punch or a jackhammer. The second option is much faster, since the power of the “jackhammer” is much greater than the hammer.
After successfully getting rid of the fallen into disrepair “former luxury” should be cleaned up and only then proceed to the second stage.
Why do we need “lighthouses”?
Many experts will consider this question silly, but still some people do not fully understand the purpose of lighthouses and give preference to “eyeballing”. But with the help of virtual laser planes created by beacons you can make marks on the walls and then on these marks perform the filling of screed from sand-concrete.
It should be noted that if you do not have a laser level, you can safely use a water level or just pull a fishing line.
How to properly prepare the mixture with your own hands
The main rule for the preparation of a quality mixture is based on strict compliance with the proportions.
The optimal variant is: for 1 kg of cement you need about 3.5 kg of sand, as well as half a liter of water. After that, everything should be thoroughly mixed in a small container. A small container will allow you to control the flow, density and freshness of the mixture.
The process of pouring a screed of sand-concrete is the final stage. How long does the mortar dry?
Before the very beginning of the work of pouring, it is necessary to carefully grout and seal all joints and cracks in the concrete slab. You should also lay a specialized damping tape around the perimeter of the room, thanks to which you will protect the coating from deformation.
Was the installation of the tape successful? That’s great! Now you can start laying the mixture. Pour the mixture prepared in advance near the wall, which is opposite the door, and start smoothing the mortar with a rule. How long does it dry? This process will take about a month.
The next day you can already walk on the screed. But why do you need to walk on it? It is to remove the remains of the mixture, as well as to grout the screed and make it smoother.