With floors, every millimeter counts – an uneven screed means more leveling trowel, problems with tiles and underfloor heating. A rotating laser will give you one level throughout the house, not just in one room.
1. Determine the level of the finished floor
To start, you need one reference height for the entire house – usually a “meter tape”: a line 1,000 mm above the future finished floor.
- Place the laser in the center of the house, ideally so that the beam passes through the doors to as many rooms as possible.
- At the front door threshold (or another known point), measure where the finished floor should be.
- Adjust the receiver on the staff so that the laser plane is exactly 1000 mm above this level.
2. Mark the tape measure
Walk through the rooms and make marks on the walls according to the receiver (or directly according to the beam, if you can see it). Connect the marks with a line. From now on, everything is measured from the tape measure down :
| Layer | Height under the tape measure |
|---|---|
| Finished floor | 1,000mm |
| Top of screed (for tiles 10 mm + adhesive 5 mm) | 1,015 mm |
| Top of insulation (with 50 mm screed) | 1,065 mm |
The values are just an example - take the floor composition from the project.
3. Install leveling points for the screed
With both cast and classic screeds, the height is maintained using leveling points (tripods, targets or bars):
- Place the batten on the point and adjust the receiver to the height of the top of the screed.
- Raise the point with the screw or washer until the receiver beeps continuously.
- Arrange the points in a grid of approximately 1.5 × 1.5 m.
4. Check flatness
After the screed has set, go over the surface with the batten and receiver in fine mode (± 1 mm) . Write down the deviations - you will immediately see where you need to sand or level with a trowel.
Tips
- Indoors, you can often do without a receiver with a green beam - the beam is clearly visible on the wall.
- Do not move the laser during the entire work. If necessary, readjust it using the measuring tape.
- With underfloor heating, the exact height is doubly important – an uneven screed means uneven pipe coverage.
Do you need advice on interior lasers? Call us.