BS8414 Part 1: 2002 Test on a Phenolic Insulated Rainscreen system. Prepared for: Kingspan Insulation Ltd Pembridge Leominster Herefordshire HR6 9LA

Transcription

1 BS8414 Part 1: 2002 Test on a Phenolic Insulated Rainscreen system Prepared for: Kingspan Insulation Ltd Pembridge Leominster Herefordshire HR6 9LA 8 December Page 1 of 16

2 Prepared on behalf of BRE Testing by Name Phil Clark Position Senior Consultant Signature Approved on behalf of BRE Testing by Name David Hoare Position Senior Consultant Date 9 December 2005 Signature BRE Testing Garston WD25 9XX T + 44 (0) F + 44 (0) E enquiries@brecertification.co.uk BRE Testing is not UKAS accredited to make opinions and interpretation. Any opinions and interpretations included as part of this report are clearly marked as such This report may only be distributed in its entirety and in accordance with the terms and conditions of the contract. Test results relate only to the items tested. We have no responsibility for the design, materials, workmanship or performance of the product or items tested. This report does not constitute an approval, certification or endorsement of the product tested. This report is made on behalf of BRE Testing. By receiving the report and action on it, the client accepts that no individual is personally liable in contract, tort or breach of statutory duty (including negligence). No third party has any right to rely on this report. Page 2 of 16

3 Contents 1 Introduction 4 2 Details of tests carried out 5 3 Description of product 6 4 Test conditions 8 5 Test Results Visual Observations Temperature time profiles Post test damage report Cement board overcladding Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board 13 6 Reference 13 Page 3 of 16

4 1 Introduction The system was tested to BS8414 Part 1: 2002 [1], at the request of Kingspan Insulation Ltd under reference BS8414 Part 1:2002 describes a method of assessing the behaviour of non-load bearing external cladding systems, rainscreen overcladding systems and external wall insulation systems when applied to the face of a building and exposed to an external fire under controlled conditions. The fire exposure is representative of an external fire source or a fully developed (post-flashover) fire in a room, venting through an opening such as a window aperture that exposes the cladding to the effects of external flames. The specification and interpretation of fire test methods is the subject of ongoing development and refinement. Changes in associated legislation may also occur. For these reasons it is recommended that the relevance of test reports over 5 years old should be considered by the user. The laboratory that issued the report will be able to offer, on behalf of the legal owner, a review of the procedures adopted for a particular test to ensure that they are consistent with current practices, and if required may endorse the test report. Page 4 of 16

5 2 Details of tests carried out Name of Laboratory: Laboratory Address: BRE Testing Limited Bucknalls Lane, Garston, Watford, Herts. WD25 9XX Telephone No.: Fax No.: Test reference: Date of test: 31 May 2005 Sponsor: Sponsor address: Kingspan Insulation Limited Pembridge, Leominster, Herefordshire, HR6 9LA Sponsors Reference No: Method: The test was carried out in accordance with BS8414 Part 1: 2002 Deviations: None Page 5 of 16

6 3 Description of product Trade name and specimen identification code or number: Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board Colour: Grey / Cream or Red Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board with foil finish top and bottom. Fixing Details: 60 mm thick Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board which were 1200 mm x 900 mm was mechanically fixed to the block work substrate mm x 900 mm x 6 mm thick cement particle boards, manufactured by UAC, were mechanically fixed at 600 mm centres to an aluminium railing system which was also mechanically fixed to the block work substrate. The cement boards provided the overcladding for the rainscreen system. A 40 mm deep ventilated cavity was provided between the Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board and the cement particle board. Fire stopping was provided by a ventilated rainscreen barrier system, comprising of nominal 2.5mm thick graphite based intumescent strip bonded to nominal 0.6 mm thick galvanised steel sheet, and positioned 0.5 m and 4 m above the fire chamber on both the main face and the wing face (Full manufactures details are held on file). No other material details were supplied. The specimen area was 8.4 m x 2.70 m on the main face and 8.4 m x 1.80 m on the wing face. The finished construction prior to testing can be seen in Photograph 1. The panel layout is given in Appendix 1. All test materials were supplied by the sponsor. BRE were not involved in the sample selection process and therefore cannot comment upon the relationship between samples supplied for test and the product supplied to market. Installation of Specimen: The test sponsor undertook the supply and installation of the test specimen. BRE staff undertook no supervision of this process. Conditioning of the Specimen: Not required Description of substrate: The specimen was installed on to the right hand face of the BRE External Cladding Test Facility. This is a multi-faced test facility constructed from low-density concrete blocks on to which the test specimen was installed. Page 6 of 16

7 Photograph 1 Complete system as installed, prior to testing Page 7 of 16

8 4 Test conditions Test Date: 31 May 2005 Thermocouple locations: Level 1 External 50 mm from surface. Level 2 External 50 mm from surface, void space (mid depth) and insulation layer (mid depth). The thermocouple locations and numbers are given in Figure 1. Frequency of measurement: Data records were taken at five second intervals. Ambient Temperature: 18.0 C Wind speed: 0.0 m/s (3 m above the ground). 5 Test Results Visual observations are given in Section 5.1, the temperature verses time curves for the thermocouples at Levels 1 and 2 are given in Section 5.2 and a post test survey is given in Section 5.3. The time base on the temperature time curves is from time t s as defined in BS8414 Part 1:2002. Page 8 of 16

9 External Thermocouples Void Thermocouples Insulation Thermocouples Figure 1 Arrangement and numbering of the thermocouples Page 9 of 16

10 5.1 Visual Observations Time (min:sec) Description 0:00 Crib Ignition 0:42 Flame emerges out from the fire chamber 1:08 Flame reaches 1 m above the fire chamber on main face 4:27 Light smoke issues from top cap of main face. (right hand corner) 10:00 Tip of flames at 4 m height 10:39 Cement board falls away from main face, insulation core exposed. 13:08 Cement board between 1.2 m and 2.4 m and to left of the centre line on main face breached flames emitting from the top and to right. 16:57 Flames emitting from joint on centre line at level between 2.4 m and 3.6 m on the main face. 17:01 Half of the cement board 2.4 m and 3.6 m of main face on left of centre line falls off. 17:56 Flaming on surface of insulation material between 2.4 m and 3.6 m of main face on left of centre line. 18:23 Flames emitting from behind cement board at 2.4 m and 3.6 m of main face on right of centre line. 20:50 Flames emitting from gap at 1.2 m on wing face. 20:51 Panel between 1.2 m and 3.6 m on right of main face falls. Causes damage to wing face at between 0 m and -0.9 m. 21:59 Flames on wing from behind 0 m and -2.0 m. Area where falling cement boards caused damage. 23:16 Flaming on wing face between 0 m & 1.2 m. 23:31 Sporadic flaming on wing face between 1.2 m and 3.6 m. 24:34 Flames emitting from gap at 3.6 m on wing face. 26:06 Flaming on wing face at 2.4 m. 28:06 Flaming on wing between 0 m and 2.4 m 29:43 Flaming on main face at 4.8 m 30:00 Crib Extinguished. Intermittent flaming continues on wing face 49:00 All flaming out. Page 10 of 16

11 5.2 Temperature time profiles LEVEL 1 - External Temperature TEMPERATURE (deg C) TIME - (s) CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 Figure 2 Level 1 - External Thermocouples LEVEL 2 - External Temperature TEMPERATURE (deg C) TIME (s) CH14 CH15 CH16 CH9 CH10 CH11 CH12 CH13 Figure 3 Level 2 - External Thermocouples Page 11 of 16

12 LEVEL 2 - Void Temperature TEMPERATURE (deg C) TIME (s) CH17 CH18 CH19 CH20 CH21 CH22 CH23 CH24 Figure 4 Level 2 Void Thermocouples LEVEL 2 - Insulation Temperature TEMPERATURE (deg C) TIME (s) CH25 CH26 CH27 CH28 CH29 CH30 CH31 CH32 Figure 5 Level 2 Insulation Thermocouples Page 12 of 16

13 5.3 Post test damage report Cement board overcladding Photograph 2 shows the extent of damage sustained by the cement particle board and the aluminium railing system. On the main face, the cement board overcladding was detached up to a height of 4.00 m and to a width of 2.15 m at its widest point above the head of the fire chamber. The cement particle board was discoloured to the full height of the test sample and to a width of 2.15 m, from the internal corner, 0.5 m above the head of the fire chamber, and a width of 0.5 m, 6.4 m above the head of the fired chamber. The aluminium railing system was burnt away to a height of approximately 3.0 m above the centre line of the fire chamber and to 0.9 m to the left of the centre line. On the wing face, the cement particle board had detached from m (floor level) to 3.00 m above the head of the fire chamber. The panels were detached to 0.90 m from the internal corner Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board Photograph 3 shows the discolouration and burnt away sections of the Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board, after the cement particle boards were removed. On the main face, the Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board (foil faces and insulation material) had been consumed to a height of 3.60 m above the head of the fire chamber and a width a maximum width of 1.70 m, exposing the block work substrate to the rear. The phenolic material was discoloured to full height on the centre line and around the area of the upper fire break. On the wing face, the foil face of the Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board was detached and the phenolic boards partially consumed to 3.00 m above the head of the fire chamber. On no part of the wing face had the Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board been full consumed to expose the block work substrate. 6 Reference 1. BS :2002, Fire Performance of External Cladding Systems Part 1: Test method for nonload bearing external cladding systems applied to the face of the building, British Standards Institute, London, Page 13 of 16

14 Photograph 2 Complete system, showing post test damage to cement particle board and Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board Page 14 of 16

15 Photograph 3 Kooltherm K15 Zero ODP Phenolic Rainscreen Insulation Board, post test damage (cement Particle board removed) Page 15 of 16

16 Appendix 1: Product Details ==============REPORT ENDS============= Page 16 of 16