Compare

Knauf Isolator: II-60-055-6-2x15-SSP-1x50(220/120)

Name: Knauf Isolator: II-60-055-6-2x15-SSP-1x50(220/120)
Brand: Knauf UK
SKU: siBVmjfQk6scWDZdRCuvDY

Verified by manufacturer 3 days ago

With deflection head arrangement

Knauf UK

Product certifications:

EPD
Certificate type
EPD
Certificate type
EPD
Certificate type
EPD
Certificate type
CCPI System
Certificate type

Twin Frame system is typically used to divide habitable dwellings.

Jump to:

0800 521 050 Website

Application

Plasterboard partition system.

Description

Twin Frame system is typically used to divide habitable dwellings. 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 for sound insulation.

Testing Methodology: BS EN 1363-1 AND BS 476-20

Knauf interior drywall partition systems* that achieve a fire resistance performance are tested in accordance with BS EN 1363-1 and BS EN 1364-1. These are the up to date and most rigorous test methodology standards to follow.

Determining the maximum height of a drywall partition as per the BS EN 1363-1 fire test methodology, is typically restricted by the 3 metre height of the test furnace.

To understand the true maximum height of the system whilst under fire test conditions (‘Fire State Height’), there are three options. Increases can be determined by utilising greater test furnace heights, via Extended Field of Application (as outlined in BS EN 15254-3 - it is important to note this standard applies to single metal frame symmetrical systems only), or via BS EN 1364-1.

The BS 476-20 standard is also restricted by the 3 metre height of the test furnace. However, under this BS standard, increasing the maximum heights of a system can be based on the ‘Cold State Height’. The cold state height is calculated using structural engineering methods to L/240 @ 200Pascals. (L = Height of wall). Regulatory Requirements

Specific to Approved Document B (England) there is a requirement to use European classifications and fire resistance test methodologies in accordance with BS EN 1363-1 and BS EN 1364-1, which means that the fire state height must be considered. However, Approved Document B (England) currently allows the usage of the BS 476 series, though it should be noted that, following consultation, the full BS 476 series will be removed in 2029. For other nationals, please consult relevant approved documents, technical guidance, and handbooks.

Knauf Approach & Recommendations:

Knauf advise and promote that EN compliance should be followed. That is to say Knauf advise utilising an BS EN 1364-1 fire resistance test and extend the maximum height of a drywall partition system via either BS EN 15254-3, BS EN 1364-1 or via a fire resistance test within a test rig greater than 3m in height.

Projects that wish to use the BS 476 series must gain agreement between the Client, Accountable Persons, Duty Holders, and Local Building Control that the cold state height is an acceptable methodology. For further information on Knauf system types that are applicable to support projects focusing on BS compliance, refer to Knauf Systems Performance Tables (BS compliance).

General information

Material	Gypsum Metal Glass mineral wool
Shape	Rectangle Other Square
Width	Bespoke
Height	Bespoke
Warranty description	Lifetime Guidance for specification option: Knauf Specification Disclaimer - Supply of Knauf products and systems for your project is typically made via distribution in accordance with Knauf’s ‘standard terms and conditions of sale. Please be advised that Knauf’s design liability is strictly limited to the manufacture of its tested products and systems, in their tested arrangements, in accordance with the enclosed specification document, specification clauses and standard details. Knauf does not warrant nor accept any liability for the design, overall health and safety or functionality of any interfaces within the building between its stand-alone products and/or systems and any other sections or interfaces. Download the full Specification Disclaimer here: Knauf Specification Disclaimer \| Knauf UK \| NBS Source View Knauf's Standard Terms and Conditions of Sale here: Terms and Conditions of Purchasing from Knauf \| Knauf Manufacturer guidance The 100% Knauf System Performance Warranty - Knauf warrants that its Systems will perform to the specified requirements throughout the lifetime of the building, when installed properly and under normal conditions. The 100% Knauf System Performance Warranty guarantees that your Knauf systems are: Manufactured from the highest quality raw materials in state-of-the-art factories. Products comply with UK and/or EU standards and are subject to rigorous quality assurance procedures. System testing conducted at UKAS accredited laboratories or equivalent recognised (under ILAC MRA) European testing facilities for fire resistance and acoustic sound insulation testing with continuous factory production control testing to review and maintain published performances. Fully supported at every stage of the project by Knauf’s market-leading technical and sales support personnel, both pre-site and during construction. Download the full System Performance Warranty here: The 100% Knauf System Performance Warranty \| Knauf UK \| NBS Source

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

System performance
Sound insulation, Rw (minimum) to BS EN ISO 10140-2 or BS EN ISO 140-3	62 Rw (dB). Manufacturer guidance When tested to BS EN 10140-2.
Sound insulation, Rw + Ctr (minimum) to BS EN ISO 10140-2 or BS EN ISO 140-3	56 Rw+Ctr (dB). Manufacturer guidance When tested to BS EN 10140-2.
Fire resistance to BS EN 1364-1	EI 120. Manufacturer guidance Tested in accordance with EN 1364-1.
Duty rating to BS 5234-2	Severe duty (SD). Manufacturer guidance In accordance with BS 5234-2. Clause 1.6.2 and 1.6.3 of Annex B and C.
Maximum height - cold state	3300 mm.
Thickness	220 mm. Manufacturer guidance Excluding finishes.

Classification data
Framing	Twin (double) Knauf 60 'I' (0.55) at 600 mm centres to suit maximum height. Head channel: Knauf 62 Deep Flange 'U' Channel (0.70) (70 mm deep flange). Floor channel: Knauf 62 'U' Channel (0.55).
Insulation	50 mm Knauf Insulation Acoustic Roll.
Linings	2 x 15 mm Knauf Soundshield Plus to each side.
Fasteners	Inner layer (each side): 25 mm Knauf Performance Plus screws. Outer layer (each side): 45 mm Knauf Performance Plus screws.
Joint treatment	Horizontal joint: Knauf Flat Fixing Plate.
Finish	- Manufacturer guidance For paint finishes: System must be taped and jointed using Knauf Joint Filler (Premium) or Knauf Joint Cement Premium and Knauf Joint Tape (Paper). Or alternative Knauf jointing compounds manufactured to EN 13963. Knauf Wallboard Primer applied once taping and jointing completed. Prior to where paint decoration is required. For preparation for decoration of where gypsum plaster skim is required, the outer layer of plasterboard joints is required to be taped and filled, using Knauf Joint Filler (Premium) and Knauf Joint Tape (Paper) meeting quality level 1 in accordance with Eurogypsum - Drywall Jointing and Finishing - Surface quality level classification. For application where gypsum skim finish is required, the Knauf system is to be taped and filled using Knauf jointing compounds. When using Knauf Moisture Panel or Knauf Performance Plus, the applicator of gypsum skim finish is required to check if pre-treatment is required.
Deflection head	For deflection head allowance of up to -25 mm or ±12.5 mm - use 2 x 19 mm Knauf Coreboard fillets.
System code	EN-II-60-055-6-2x15-SSP-1x50(220/120). Guidance for specification option: The maximum height stated under Partition height (see below) is for the fire resistance of the system to meet project requirements where EN compliance is required. The stated maximum height figure is the lower value between the cold state height, calculated structurally to a limiting deflection of L/240 @ 200Pa and the fire state height, as outlined in accordance with EN 1364-1. BS- II-60-055-6-2x15-SSP-1x50(220/120). Guidance for specification option: The maximum height stated under Partition height (see below) is for the fire resistance of the system to meet project requirements where BS compliance (BS 476-22), is required and is accepted by the client, designers and building control. The stated maximum height figure is based on the maximum cold state height, calculated structurally to a limiting deflection of L/240 @ 200Pa.
Partition height	- Manufacturer guidance Insert requirements, maximum 3300 mm. See System code for further details.

Sustainability data

Country of material origin	Spain Manufacturer guidance Applies to our natural gypsum only which is the main component of plasterboard. Other components are from other countries. Please contact Knauf for more details.
Country of product manufacture	United Kingdom Manufacturer guidance UK applies to the majority of manufacture but a small percentage of finished items may be imported. Please contact Knauf for more details.
Material	Gypsum Metal Glass mineral wool
Recyclability	Individual product EPDs for plasterboard and metal components available at: https://www.knauf.co.uk/our-services/resources/environmental-product-declarations-2
Recycled content As defined in clause 7.8 of BS EN ISO 14021	12.64 % Manufacturer guidance (2024 average by mass for all UK produced plasterboards, recycled gypsum & paper)