For lighthouses, you should use a metal profile. This type of material makes it possible to accurately set levels. If there is no such material in stock, then you can use metal pipes, although their installation has some complex points. To install guides, you should use the laser level. It must be placed at the highest point of the room, as well as activate. As a result, the beam will be able to form the most even plane. Based on this data, you can have guide beacons.
To fix them, you can use self -tapping screws. By the beam, which follows from the laser level, it is necessary to place the beacons. The distance between them will be about 30 centimeters, but between the rows it is necessary to leave about half a meter.
In the event that there is no laser level in stock, then other devices can be used.
For the correct filling of the screed, you can use a dry board. It is it that needs to be placed on the previously installed beacons. This method will check whether you have placed the beacons correctly. If everything is done correctly, then you can proceed to the direct filling of the screed.