TECHNICAL GUIDE AND QUANTITY REPORT

Knauf W626: double-board independent lining

W626.es is an independent stud lining with insulation and multiple Knauf boards. The loaded double-board build-up provides a more robust solution than W625.es.

Calculate materials for W626
This guide and quantity report support product selection and ordering. They do not replace project design, professional approval or checks for loads, fixings, junctions and site-specific conditions.
Variants
1
Thickness range
105 mm
Documented EI
Not published
Documented Rw
Not published

DECISION SHEET

When to choose W626

Best suited to

Robust independent linings with multiple boards and a free cavity for insulation or services, reaching 7.65 m between braces in the W62 table.

Compare first with

W625 saves material where one board is sufficient; W623 minimises thickness if direct fixing to the existing wall is viable.

Critical site checks

  • Choose stud width and spacing for the exact height and distance between braces.
  • For greater total heights, the sheet allows continuity with braces at no more than 9 m intervals.
  • Calculate acoustic improvement using the actual base wall, cavity and insulation, not as an isolated lining value.

Available W626 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-upThicknessBoardsFrameFireAcousticMax. heightCalculate this variant
W626 · 105 mm2 × boards per face 105 mm 2 × Knauf board 12,5 Knauf stud and channel 70 Not published Not published 7.7 m Calculate this variant

How to choose a W626 variant

Use W626 where a multi-layer build-up is required, checking height, cavity, substrate and complete assembly performance in W62.es.

The Ferragut quantity report prepares

  • Lining boards
  • Compatible channels or studs
  • Cavity insulation
  • Screws for every layer
  • Joint tape and compound
Calculate materials for W626

What this system family contains

The composition comes from the loaded variants and identifies the work items involved before preparing the quantity report.

01Existing wall
02Knauf Insulation mineral wool
03Knauf stud and channel 70
042 × Knauf board 12,5

Questions about Knauf W626

What is the Knauf W626 system?

W626.es is an independent stud lining with insulation and multiple Knauf boards. The loaded double-board build-up provides a more robust solution than W625.es.

Which W626 variant should I choose?

Use W626 where a multi-layer build-up is required, checking height, cavity, substrate and complete assembly performance 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.

FAMILY COMPARISONCompare W623, W625 and W626Compare build-ups →