- Variants
- 1
- Thickness range
- 62 mm
- Documented EI
- Not published
- Documented Rw
- Not published
DECISION SHEET
When to choose W623
Best suited to
Compact linings fixed directly to a substrate that can accept the anchors, where minimum build-up depth is the priority.
Compare first with
Knauf recommends W625 or W626 where acoustic improvement is the primary aim or an independent service cavity is needed.
Critical site checks
- ✓Confirm that the substrate can accept direct fixings and establish the actual cavity before quantifying.
- ✓Select CD 60/27 or F47/17 profiles together with their compatible anchors.
- ✓Do not transfer a standalone acoustic value: improvement depends on the base wall, cavity, insulation and board assembly.
Available W623 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 |
|---|---|---|---|---|---|---|---|
| W623 · 62 mm2 × boards per face | 62 mm | 2 × Knauf board 12,5 | CD profile 60/27 | Not published | Not published | 10 m | Calculate this variant |
How to choose a W623 variant
The loaded build-up uses CD 60/27 channels and two boards. Where acoustic improvement is required, verify the complete wall-and-lining assembly in W62.es.
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 W623
What is the Knauf W623 system?
W623.es lines an existing wall with direct-fixed channels and one or more Knauf boards. It can level the substrate while keeping the service cavity compact.
Which W623 variant should I choose?
The loaded build-up uses CD 60/27 channels and two boards. Where acoustic improvement is required, verify the complete wall-and-lining assembly in W62.es.
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.
