TECHNICAL COMPARISON · KNAUF

Knauf W111, W112 or W113: partition comparison

All three use a single metal frame, but they are not interchangeable. Board count and type, stud, spacing and complete installation determine the published performance.

Compared sections of Knauf W111, W112, W113 systems
Compare W111, W112 and W113 · 2026-07

Quick answer

W111 prioritises compactness with one board per side; W112 is the balanced two-layer option; W113 uses three boards per side for heavier, more demanding documented build-ups.

Technical comparison of loaded build-ups

Ranges come from the build-ups available in the calculator. A value that is not published is never estimated.

SystemBoards/sideThicknessFrameFireAcousticMax. heightCalculate
W111single-layer partition173–95 mm48–70 mmEI 30 / EI 6049 dB3–4.2 mCalculate
W112double-layer partition298–120 mm48–70 mmEI 60 / EI 12054–57 dB3.1–5 mCalculate
W113triple-layer partition3123 mm48 mmEI 9058 dB3.1 mCalculate

Which partition to choose

Project need

Minimum thickness and a simple internal division

W111

One board per side and the fewest layers in the family.

View system sheet

Project need

Balance of robustness, acoustics and fire

W112

Two boards per side with more documented Standard and Diamant options.

View system sheet

Project need

High mass or a documented three-layer build-up

W113

Three boards per side, with more material, weight and installation time.

View system sheet

Typical applications

  • ✓W111 for compact internal layouts where the selected variant meets height and EI requirements.
  • ✓W112 for homes, hotels, offices or shops requiring a balanced multi-layer solution.
  • ✓W113 where a three-layer build-up provides a documented performance that W112 does not reach.

Changes that invalidate performance

  • !Replacing a board without rechecking EI, Rw, weight and height.
  • !Using one screw size for every layer or ignoring profile gauge.
  • !Increasing stud centres simply to save profiles.
  • !Claiming fire resistance for horizontal boarding when it is not certified.

KNAUF · FERRAGUT

Materials that change between W111, W112 and W113

The quantity report adjusts boards, studs, channels, insulation, acoustic seal, layer-specific screws and joint treatment to the selected build-up.

View the complete Knauf catalogue
Banda acústicaElastic adhesive tape designed to improve sound insulation between metal profiles and building components.Cinta de Papel para JuntasManual or machine-applied joint treatment using Knauf joint compounds, both setting and air-drying types.Knauf Montante C 70/38/0,6Upright profile for vertical systemsKnauf Pasta Juntas Unik Fill & Finish 20KGReady-to-use joint compound for a finish grade up to Q4. Green cap.Knauf Placa Acustik 12,5Laminated gypsum board for systems with enhanced sound insulationKnauf Placa Acustik 15Knauf panel with high acoustic performance.Knauf Placa Diamant 12,5A versatile, fire-resistant, impregnated, acoustic, and high-strength Knauf panel.Knauf Placa Diamant 15A versatile, fire-resistant, impregnated, acoustic, and high-strength Knauf panel.

Official technical source

W11.es Tabiques Knauf con estructura metálica (2026)

Performance is checked against the stated revision. Ferragut does not fill missing values or replace technical design.

Reviewed 29 August 2026

PDF · 2026-07 ↗