MBS K10G2W Kooltherm K10 G2W White Soffit Board Installation Guide
- June 15, 2024
- MBS
Table of Contents
MBS K10G2W Kooltherm K10 G2W White Soffit Board
FEATURES
- High performance rigid thermoset phenolic insulation
- Fibre-free, closed cell insulation core
- Attractive white finish
- Resistant to the passage of water vapour
- Group 2 NCC fire classification determined in a full room ISO 9705 test in accordance with AS/NZS 5637
- No CFC or HCFC used in manufacture
- Has zero ODP and low GW
- NCC and AS/NZS 4859.1:2018 compliant
- Made in Australia
Typical Constructions and Total R-values
Concrete Soffit Floor / Roof Installation
Thermal Performance
NCC 2019 prescribes different methods to determine Total R-value Calculations for Volume 1 and Volume 2.
Total R–values for various thicknesses of Kingspan Kooltherm® K10 G2W White Soffit Board Applicable for NCC Volume One, Class 2 to 9 buildings & NCC Volume Two, Class 1 & 10a buildings, & NCC Volume One, Class 2 sole-occupancy unit or a Class 4 part of a building
Product Thickness| Heat flow in| Heat flow out
Roof application, no ceiling (150 mm concrete)
25 mm| RT1.4| RT1.4
30 mm| RT1.6| RT1.6
40 mm| RT2.0| RT2.0
50 mm| RT2.6| RT2.7
60 mm| RT3.1| RT3.2
70 mm| RT3.5| RT3.7
80 mm| RT4.0| RT4.2
90 mm| RT4.5| RT4.6
Total R–values for various thicknesses of Kingspan Kooltherm® K10 G2W White
Soffit Board Applicable for NCC Volume One, Class 2 to 9 buildings & NCC
Volume Two, Class 1 & 10a buildings, & NCC Volume One, Class 2 sole-occupancy
unit or a Class 4 part of a building
Product Thickness| Heat flow in| Heat flow out
Unenclosed sub-floor application (150 mm concrete)
25 mm| RT1.3| RT1.4
30 mm| RT1.5| RT1.6
40 mm| RT1.9| RT2.1
50 mm| RT2.5| RT2.7
60 mm| RT3.0| RT3.2
70 mm| RT3.5| RT3.7
80 mm| RT3.9| RT4.2
90 mm| RT4.4| RT4.7
Enclosed sub-floor application (150 mm concrete)
25 mm| RT1.9| RT2.1
30 mm| RT2.2| RT2.3
40 mm| RT2.6| RT2.8
50 mm| RT3.2| RT3.4
60 mm| RT3.7| RT3.9
70 mm| RT4.1| RT4.4
80 mm| RT4.6| RT4.9
90 mm| RT5.0| RT5.4
Assumptions
The R-values shown are Total R-values for the building element as required by the Energy Provisions of the National Construction Code, calculated in accordance with AS/NZS 4859.2 2018 & NZS 4214. Kingspan Kooltherm® products are manufactured, tested and packaged in conformance with AS/NZS 4859.1:2018.
Product Details
Product Description
Kingspan Kooltherm® K10 G2W White Soffit Board is a super high performance, fibre-free rigid thermoset closed cell phenolic insulation core, sandwiched between an upper tissue-based facing and a lower facing of white aluminium foil auto hesively bonded to the insulation core during manufacture.
Kingspan Kooltherm® K10 G2W White Soffit Board is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
Product Data
Declared Thermal Conductivity (λ-value)| 0.021 W/mK at 23°C
(Insulant Thickness ≥ 45 mm)
0.023 W/mK at 23°C
(Insulant Thickness 25 – 44 mm)
---|---
Product Dimensions| 2400 mm x 1200 mm (2.88 m2 )
Nominal Product Thickness| 25, 30, 40, 50, 60, 70, 80, 90 mm
Product R-value
| Nominal Product Thickness | Declared Product R-value at 23°C |
|---|---|
| 25 mm | R1.10 |
| 30 mm | R1.30 |
| 40 mm | R1.75 |
| 45 mm | R2.15 |
| 50 mm | R2.35 |
| 60 mm | R2.85 |
| 70 mm | R3.35 |
| 80 mm | R3.80 |
| 90 mm | R4.30 |
| 100 mm | R4.75 |
Figure 2 White-faced super high performance Kingspan Kooltherm® K10 G2W White Soffit Board for visible aesthetic finish
Specification Guide
Kingspan Kooltherm® K10 G2W White Soffit Board
The soffit insulation shall be Kingspan Kooltherm® K10 G2W White Soffit Board ___ mm thick, Group 2 tested in accordance with AS 5637.1, with a tested SMOGRARC of not more than 75 m2/s2 x 1000, comprising a CFC/HCFC-free and zero Ozone Depletion Potential (ODP) rigid thermoset phenolic insulation core with an upper tissue-based facing and a lower facing of white aluminum foil, manufactured under a management system certified to ISO 9001:2015, ISO 14001:2015, OHSAS 18001:2007 and ISO 50001:2011 by Kingspan Insulation Pty Ltd and shall be installed in accordance with the instructions issued by them.
A Project Specific Warranty provided by Kingspan Insulation must be submitted.
Standards and Approvals
Kingspan Kooltherm® K10 G2W White Soffit Board is manufactured to the highest standards and certified under the following management systems:
| Standard | Management System |
|---|---|
| ISO 9001:2015 | Quality Management |
| ISO 14001:2015 | Environmental Management |
| OHSAS 18001:2007 | Health and Safety Management |
| ISO 50001:2011 | Energy Management |
Product Testing
| Characteristic | Standard | Result |
|---|---|---|
| Compressive Stress | AS 2498.36 | Typically exceeds 100 kPa at 10% compression |
| Water Vapour Resistance | BS EN 12086:1997 / I.S. EN 12086:1998 | > 35 MN.s/g |
FM Certification
The Factory Mutual Approval standard for soffit lining boards is Class Number 4880:2015 (Approval Standard for Class 1 Fire Rating of Building Panels or Interior Finish Materials). Kingspan Kooltherm® K10 G2W Soffit Board (thicknesses up to, and including, 120 mm) produced at Kingspan Insulation’s Somerton manufacturing facility is certified as achieving Class 1 Fire Rating to Factory Mutual Class Number 4880.
For further details please contact the Kingspan Insulation Technical Service Department or alternatively search for Kingspan Insulation on www.approvalguide.com.
This approval is valid for ceiling / soffit insulation only, with non– combustible walls with no height restriction. This approval is valid for any fixing specification. However, for mechanical reasons, the fixing specification and the taping specification must still be followed.
Fire Performance
| Test | Test Method | Result |
|---|---|---|
| Ignitability, Flame spread, Heat release, Smoke release | AS 1530.3 | Spread of |
Flame Index: 0 Smoke Development ≤ 5
NCC Group Number| AS ISO 9705| Group 2 Tested in accordance with AS/NZS 5637
as required by NCC 2016 Amdt. 1
SMOGRARC| AS ISO 9705| ≤ 75 m2 /s2 x1000
Durability
If correctly applied, Kingspan Kooltherm® products can be expected to have a long life of service.
Their durability depends on the supporting structure and the conditions of its use.
Kingspan Kooltherm® products are warranted for a period of 10 years for both residential and commercial installations.*
- Subject to the terms of the complete Kingspan Kooltherm® warranty document which is available upon request or downloadable from www.kingspaninsulation.com.au.
Environmental Data
| Aspect | Characteristic |
|---|---|
| Recyclability | Non-contaminated insulation site waste is recyclable, but there |
are currently no facilities in Australia to process returned material
Re-usability| Re-usable if removed with care (long term of service expected)
Water Use| No water used in Kingspan Insulation’s manufacturing process
Blowing Agent Global Warming Potential (GWP)| Manufactured with a blowing
agent that has low GWP
Blowing Agent Ozone Depletion Potential (ODP)| Manufactured with a CFC/HCFC-
free blowing agent that has zero ODP
Packaging| Contains 0% recycled product Polythene wrap and EPS skids 100%
recyclable
Installation Instructions
Kingspan Kooltherm® K10 G2W White Soffit Board can be fully restrained to a concrete soffit by the use of minimum 11 No. appropriate insulation fasteners with a minimum head diameter of 35 mm.
-
The fasteners should be evenly distributed over the whole area of the board and designed to provide suitable restraint for the project requirements. Consultation with the chosen fastener supplier is recommended.
-
Board joints can be either staggered or squared (see Figures 3and 4) and taped with 96 mm wide white Kingspan Insulation Tape. 4 No. fasteners along each length – no less than 50 mm
Figure 3 Fastener pattern (11 No. per board) Board size to 2400 mm x 1200 mm – 3.81 fixings / m2
Figure 4 Side elevation – Concrete Soffit with Kingspan Kooltherm® K10 G2W White Soffit Board
- no more than 150 mm from edge of board, 3 No. fasteners along the middle (offset from edge positions as per diagram Figure 3).
-
Where the board may be subject to external wind pressure, the requirement for additional fixings should be assessed in accordance with appropriate Australian wind load standards.
-
Consideration should be given to the material the fixing is made from and should be deemed appropriate for application, exposure and fire rating by the fixing manufacturer.
Figure 5 Board joints staggered
Figure 6 Board joints squared
Why 11 fixings?
Best practice determines that any rigid board insulation, not just Kingspan Kooltherm® K10 G2W White Soffit Board, should be fixed with 11 mechanical fixings for very good reasons:
- There will always be differential expansion and contraction between any rigid insulation material and adjacent building products due to varying moisture content and temperature.
- In any concrete forming, there will be an uneven surface throughout the slab.
- Where concrete formwork is joined it is normal to have ridges of up to 3 mm which make the concrete surface uneven.
- An insulation board held horizontally may bow like any other sheet material under its own weight.
Using 11 fixings ensures that the insulation board has a strong and permanent fix under the concrete soffit and that it is not compromised by any of the above issues. It also provides a proven robust fire safe solution.
These best practice recommendations are a result of over 30 years of Kingspan Insulation experience in soffit applications.
Proprietary Grid Systems
Kingspan Kooltherm® K10 G2 Soffit Board can also be fixed to a proprietary grid system comprising metal furring bars or timber battens. For further information regarding proprietary grid system specifications, please contact the Kingspan Insulation Technical Service Department.
For advice on ancillary materials, such as fixings and tapes please contact our Technical Services Department.
Installation around Fire Collars
- Fitting Kingspan Kooltherm® K10 G2W White Soffit Board tight to the fire collar is recommended to reduce the effects of thermal bridging through the slab.
- Do not cover the face of the fire collar. For fire collars to activate in a fire situation the front face needs to be exposed. This is particularly important when using cast-in collars as the face will be flush with the concrete and it would be easy to cover with the insulation board.
Figure 7 Penetration example – Kingspan Kooltherm® K10 G2W White Soffit Board installed tight around the fire collar and HDPE service pipe.
Scan to see installation video “Fixing Directly to Concrete Soffits”
General
Cutting
Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side. Ensure accurate trimming to achieve close-butting joints and continuity of insulation.
Taping
For all fixing methods board joints should be taped with 96 mm wide white Kingspan Insulation Tape (please refer to brochure “Kingspan Insulation Tape” for further information).
- Firstly, ensure that the climate conditions are suitable for the tape being used as well as the product the tape is to be applied too.
- The surface of the Kingspan Kooltherm® to which tape is being applied, should be free of dust, dirt or oils. In any case, the surface should be cleaned with a dry cloth before application of the tape.
- The release liner on the tape should be removed 300 – 600 mm at a time and the adhesive face pressed firmly onto the insulation facing. Care should be taken not to stretch the tape tightly as this will create buckles and voids in the contact area.
- Care must also be taken to apply the tape over the centre of the join so that there is adequate area on both sides of the joint for the tape to bond. Uneven width distribution also puts additional shear stress on the smaller side of the butt joint.
- The tape should then be wiped firmly from the centre out (like wallpaper) with a plastic squeegee. The more pressure that is applied, the more surface contact will be reached, therefore, the greater the bond surface.
- The tape should then be cut and fitted with a knife and scissors. The same wiping instructions should then be used as above.
In the absence of other protection exposed board edges should be protected by white Kingspan Insulation Tape with a minimum 48 mm wide overlap onto the board face (see Figure 7) or alternatively use a proprietary metal c-section.
Packaging
According to quantity, the boards are supplied in packs, labelled and shrink- wrapped in polythene.
Handling and Storage
Storage
The packaging of Kingspan Kooltherm® should not be considered adequate for long term outdoor protection. Ideally boards should be stored inside a building. If, however, outdoor storage cannot be avoided then the boards should be stacked clear of the ground and covered with an opaque polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.
Resistance to Solvents
The insulation core is resistant to short–term contact with petrol and with most dilute acids, alkalis and mineral oils. However, it is recommended that any spills be cleaned off fully before the boards are installed. Ensure that safe methods of cleaning are used, as recommended by suppliers of the spilt liquid. The insulation core is not resistant to some solvent-based adhesive systems, particularly those containing methyl ethyl ketone. Adhesives containing such solvents should not be used in association with this product. Damaged boards or boards that have been in contact with harsh solvents or acids should not be used.
OH & S
Kingspan Insulation products are chemically inert and safe to use. A Product Safety Information sheet is available from Kingspan Insulation Pty Ltd.
Foil facings are conductive to electricity – avoid contact with un- insulated electrical cables and fittings.
Installation must be in accordance with AS 3999 Bulk Thermal Insulation Installation and AS 3000 Electrical Installations (Wiring Rules).
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