Partition and lining thicknesses
In the French designation, the first number is already the finished thickness. A 98/48 is 98 millimetres, not 48.
| Case | Usual value |
|---|---|
| Partition 72/48, one board each side | 72 mm |
| Partition 98/48, two boards each side | 98 mm |
| Partition 120/70 | 120 mm |
| Partition 148/90 | 148 mm |
| Bonded lining, 10 board on 80 insulation | 90 mm |
| Bonded lining, 13 board on 100 insulation | 113 mm |
Usual sizing values, aligned with this site's calculators. They replace neither a product datasheet nor a regulatory text.
These thicknesses matter in takeoff because they come off the usable area. On a floor plate split into small offices, the difference between a 72 and a 98 amounts to square metres lost, and shows up in the lease. The second number is the stud size; it drives acoustic performance and services routing.
Finished thicknesses excluding skim coat and floor covering. A system with enhanced acoustic or fire performance can fall outside these values: the manufacturer's technical approval governs.
To apply these values to a real area, with no account:
Unit converterFrequently asked questions
Are partitions deducted from the habitable area?
Yes. Both the habitable area and the Carrez area are computed after deducting walls and partitions. That is exactly why the chosen thickness has a direct effect on the declared area.
How do you take off partitions from a PDF drawing?
By measuring the run, not the area: a partition is ordered as linear metres times height, with two faces to board. FloorScan separates load-bearing walls from partitions and outputs both runs distinctly.
The areas themselves come out of the drawing
An allowance is useless without the area to apply it to. FloorScan reads it off the PDF and exports it to your spreadsheet.