The situation is that I need to level the floor to the same height across an entire floor plan since I want to have the same parquet in all rooms without thresholds between the rooms. I have a Makita cross line laser but perhaps I need a rotary laser to solve this more smoothly?
What makes it difficult is that I need to start by measuring the highest point in all rooms and then use this as a reference measurement for all rooms (7 in total). The house is from 1929 where the studs have shifted a bit as the house has settled over the decades.
The cross laser's horizontal function, when mounted in one corner of the room, works well if only one room is to be leveled, but it's less convenient when dealing with an entire floor plan where you can't see all the floor joists at the same time. Please feel free to share any tips! =)
Another question is how to most efficiently find the highest point in a room? The laser doesn't get closer to the top of the floor joists than about 100mm. Is it just a matter of going around with a piece of wood and measuring between the top of the floor joists and the line on the piece of wood in a systematic way across the entire floor, or is there a more efficient method (besides using a chalk line and spirit level)?
Grateful for any answers.