- Variants
- 1
- Thickness range
- 92.5 mm
- Documented EI
- Not published
- Documented Rw
- Not published
DECISION SHEET
When to choose W625
Best suited to
Creating an independent cavity for insulation and services with one board, regardless of irregularities in the existing wall.
Compare first with
W626 uses multiple boards and reaches 7.65 m between braces; W623 is thinner where the substrate allows direct fixing.
Critical site checks
- ✓Reduce stud spacing to no more than 400 mm where the surface will be tiled.
- ✓A single 12.5 mm board is limited to decorative, temporary or non-regulated work and requires studs at 400 mm.
- ✓Check height, bracing and the base wall: final acoustic performance belongs to the complete assembly.
Available W625 variants
Choose a specific build-up to open the quantity report with that system already loaded. Only performance values published by the associated technical source are displayed.
| Build-up | Thickness | Boards | Frame | Fire | Acoustic | Max. height | Calculate this variant |
|---|---|---|---|---|---|---|---|
| W625 · 92.5 mm1 × boards per face | 92.5 mm | Knauf board 12,5 | Knauf stud and channel 70 | Not published | Not published | 6.2 m | Calculate this variant |
How to choose a W625 variant
Set the distance from the wall and stud width according to services, insulation and height. Final performance also depends on the existing supporting wall.
Current technical source loaded
W62.es Trasdosados y cerramientos autoportantes Knauf (2025) · 2025-12The Ferragut quantity report prepares
- ✓Lining boards
- ✓Compatible channels or studs
- ✓Cavity insulation
- ✓Screws for every layer
- ✓Joint tape and compound
What this system family contains
The composition comes from the loaded variants and identifies the work items involved before preparing the quantity report.
Questions about Knauf W625
What is the Knauf W625 system?
W625.es creates a lining independent from the existing wall, using studs, cavity insulation and one Knauf board. It provides room for services and accommodates uneven substrates.
Which W625 variant should I choose?
Set the distance from the wall and stud width according to services, insulation and height. Final performance also depends on the existing supporting wall.
What does the calculator quantify?
The tool estimates complete purchase units for boards, profiles, insulation, screws, joint treatment and accessories compatible with the selected build-up.
Where does the technical data come from?
Performance data comes from W62.es Trasdosados y cerramientos autoportantes Knauf (2025), revision 2025-12. Values that are not published are not inferred.
