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Knauf Twin Wall Isolator System 50I 170 wide

Knauf Twin Wall Isolator System 50I 170 wide

Knauf UK

Twin frame partition system with 120 minutes' fire resistance.

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Application

For commercial and residential projects. Typically used to divide habitable dwellings. 

Description

Knauf Isolator twin frame partition system.


Features and benefits:

  • The twin stud build up, combined with Knauf’s high performance plasterboards, maximizes acoustic performance in order to comply with building regulations, technical handbooks and guidance's for sound insulation.
  • 120 minutes' fire resistance.


To be installed in accordance with Knauf recommendations and British standards.

General information

Color

Blue

Finish

Primed

Material

Gypsum

Shape

Rectangle

Size

170 x 2900 mm

Uniclass

Ss_25_10_30_35 Gypsum board partition systemsPrimary

CAWS

K10/30 Metal stud

K10/125 Metal stud partition system

Specification data - Gypsum board partition systems Enhanced data

System performance

Acoustic performance.

Framing

  • Framing Stud Configuration: 50 mm Knauf 'I' stud, 0.55 mm gauge.
  • Framing Centres: 600 mm.
  • Framing Head/ Floor Channel: 52 mm Knauf ‘U’ channel.
  • Framing Fixing: Knauf Nailable plugs.

Insulation

2 x 25 mm insulation acoustic roll.

Resilient layer

Two layers of 15 mm Knauf Soundshield Plus to each side.

Fire-stopping

120 minutes.

Linings

-

Fasteners

Knauf Performance Plus screws.

Joint treatment

Taped and jointed.

Finish

  • Taped and jointed for a seamless finish using Knauf Jointing Products.
  • One coat of Knauf Wallboard Primer applied immediately after taping and Jointing. Or option of Knauf RMF (Ready Mixed Finishing).
  • Systems with a requirement for fire and/ or sound insulation performances should be installed with all outer joints taped and filled in accordance with Knauf recommendations.


Insert requirements; contact manufacturer for more information.

Samples required

Not required.

Required.

Insert requirements; contact manufacturer for more information.

Horizontal board joints

Knauf flat fixing plate.

Perimeter Sealing

Manufacturer's standard.

  • For fire rated systems, two continuous 6 mm beads of Knauf Intumescent and Acoustic Mastic should be installed underneath the floor track, between the head track and board fillet(s) and between the board fillet(s) and the soffit.
  • A bead of Knauf Intumescent and Acoustic Mastic is also required to the board perimeter edges to achieve a fire and acoustic rated seal to the structure. 
  • Knauf Sealant can be used as a perimeter seal for non-fire rated junctions/ perimeters to achieve an acoustic seal only.

Head condition

Structural soffit.

Deflection allowance

See Knauf Standard Details or contact manufacturer for more information.

Head track fillets

As per site specific requirements.

See Knauf Standard Details or contact manufacturer for more information.

Head insulation detail

See Knauf Standard Details or contact manufacturer for more information.

Height

(maximum):

2900 mm.

Width

170 mm.

FireRating

120 minutes.

Maximum heights and fire resistance:

  • Maximum heights – calculated based on a limiting deflection of L/240 at 200 Pascals (0.2 kN/m²).
  • The maximum heights related above is for fire resistance of system to meet project requirements of BS 476: Part 22: 1987 only.
  • For maximum heights in relation to meeting project requirements of BS EN 1364-1:2015, please consult manufacturer.
  • For systems requiring 60, 90 or 120 minutes, consideration should be given to the deflection head detail - See Partition Standard Details or contact manufacturer for more information.

AcousticRating

(Rw):

63 dB.

Acoustic sound reduction dB (Rw):

  • Systems tested or assessed in accordance with BS EN ISO 10140-1:2010+A2:2014.
  • Acoustic sound reduction based on ‘C’ Stud centres at 600 mm centres.

Duty

Severe.

Literature

Soundshield Plus - PDS

Soundshield Plus - PDS

The Knauf Manual

The Knauf Manual

The Manual Addendum April 2021 (Revised 24th November 2021)

The Manual Addendum April 2021 (Revised 24th November 2021)

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