Conseil national de recherches Canada Institut de recherche en construction

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1 National Research Council Canada Institute for Research in Construction Ottawa, Canada K1A 0R6 Conseil national de recherches Canada Institut de recherche en construction Testing Report Title: Wind uplift pressures of 2001 Company Wind Vented/ Negative Pressure Roofing System according to CSA A Report No: B Report Date: February 4, 2013 Proponent: System Installed by: 2001 Company Thomas L. Kelly System Tested by: Report by: Steven Ko Pascal Beaulieu Report Approved by: Suda Molleti, Ph.D Please note our general conditions below. The indicated test data are valid under test conditions only. A successful application under other than the reported test conditions is not proven with this test report. This report is the intellectual property of the National Research Council of Canada (NRC) and must be copied as a whole only. It is only allowed to be published with the written permission of NRC. B Feb * * * Page 1 of 15

2 SYSTEM: EPDM SYSTEM ON CONCRETE DECK: MOISTURE REMOVAL CONCEPT ON A RE- ROOFING SYSTEM System components: See Page 2-5 System layout: See Page 6-7 Time lapsed between system construction (11 May 2011) and system testing (12 May 2011): 1 Day Temperature at the beginning and at the end of the test: +20ºC Measured Pressure Sustained Suction Pressure Failed Pressure Maximum Membrane Deflection Initial Weight of the Wet Fire Guard Mat Final Weight of the Wet Fire Guard Mat After 12 hours Dynamic Suction Test Wind Uplift Resistance Failure Mode 175 psf (8379 Pa) N/A N/A 79 lbs (35.8 kg) 67 lbs (30.4 kg) N/A N/A B Feb * * * Page 2 of 15

3 ROOF SYSTEM COMPONENTS: SYSTEM 1 Structural Deck CD galvanized steel deck Thickness 18Ga Overall Depth 3 (76 mm) Span and Attachment 10 (3 m)o/c & spot weld every female flute Source Agway Metals Inc Fastener Pullout as per ANSI FX Steel mesh was loose laid on top the steel deck as reinforcement for concrete 6 (152 mm) thick concrete was poured on top the steel deck with fine finished surface Vapor Barrier Modified bituminous membrane Dimensions Width = 39 (991 mm) Thickness Base (114mils) & cap (133mils) Attachment Torching A coat of Siplast PA-1125 primer was applied on the concrete deck layer Siplast paradiene 20TG base sheet was torched on top the concrete deck Torch Siplast paradiene 30 FR TG cap sheet was torched on top the base sheet Thermal Insulation Polyisocyanurate (ISO) Dimensions L= 4' (1219 mm) W= 4' (1219 mm) t= 2" (51 mm) Number of Boards 32 Attachment Loose laid on top the vapor barrier Source John Mansville Cover Board Cement board Dimensions L= 5' (1524 mm) W= 3' (914 mm) t= ½" (13 mm) Number of Boards 33 Attachment Loose laid on top the insulation Source Perma Base B Feb * * * Page 3 of 15

4 ROOF SYSTEM COMPONENTS CONTINUE: SYSTEM 1 Membrane Number of plies: 1 / 2 / 3 / 4 EPDM non reinforced membrane Dimensions Width = 10 (3048 mm) Thickness 60 mils Attachment Adhesive Membrane was adhered to cement board with 2001 bonding contact adhesive Membrane Seam Method: Torching/Hot-Air Weld / Mopping / Adhesive / Tape Overlap= 6 (152 mm) Bonded Portion= 6 (152 mm) VERSICO V150 primer was applied on 6 (152 mm) wide seam of the top and botton sheets 6 (152 mm) wide cured cover tape was applied on the seam of the botton sheet and the top sheet was overlapped to make a continuous membrane Other Details At the perimeter, EPDM membrane was adhered to vapor barrier with 1 (25 mm) butyl gum and 2001 bonding contact adhesive, and then a termination bar was fastened with 1 ½ (38 mm) zinc nail in rivet at 7 (178 mm) o/c on top of the EPDM membrane as the edge sealing technique. B Feb * * * Page 4 of 15

5 ROOF SYSTEM COMPONENTS: RE-ROOFING SYSTEM Thermal Insulation Polyisocyanurate (ISO) Dimensions L= 4' (1219 mm) W= 4' (1219 mm) t= 2" (51 mm) Number of Boards 9 Attachment Loose laid on top the System 1 Source John Mansville Cover Board Cement board Dimensions L= 5' (1524 mm) W= 3' (914 mm) t= ½" (13 mm) Number of Boards 8 Attachment Loose laid on top the insulation Source Perma Base Membrane Number of plies: 1 / 2 / 3 / 4 EPDM non reinforced membrane Dimensions Width = 10 (3048 mm) Thickness 60 mils Attachment Loose laid Membrane was loose laid on top the cement board Membrane Seam Method: Torching/Hot-Air Weld / Mopping / Adhesive / Tape Overlap= 6 (152 mm) Bonded Portion= 6 (152 mm) VERSICO V150 primer was applied on 6 (152 mm) wide seam of the top and botton sheets 6 (152 mm) wide cured cover tape was applied on the seam of the botton sheet and the top sheet was overlapped to make a continuous membrane B Feb * * * Page 5 of 15

6 ROOF SYSTEM COMPONENTS CONTINUE: RE-ROOFING SYSTEM Other Details A re-roofing system was constructed on top the System 1 For pressure equalization, EPDM membrane of System 1 was cut along the cement board joints The re-roofing system comprised of two configurations: - On a 12 x 12 (3.66m x 3.66 m) area of System 1, insulation was loose laid on top the existing membrane and cement board was loose laid on top the insulation - On a 12 x 11 ( 3.66 m x 3.35 m) area of System 1, fire guard mat was loose laid on top the existing membrane The re-roofing system was completed by installing a new 60mil non-reinforced membrane on top the cement boards and fire guard mat In order to prove 2001 Company Wind vented/ Negative Pressure Roofing System able to remove the moisture under the membrane, 23 liters of water was poured on top the pre-weighed fire guard mat before the dynamic test. At the perimeter,epdm membrane was adhered to vapor barrier with 2001 bonding contact adhesive and 1 (25 mm) butyl gum as the membrane edge sealing technique 2 ½ (64 mm) diameter round hole was cut from the top of the re-roofing membrane to simulate as a valve for pressure equalization The wet fire guard mat was weighed after 12 hours dynamic test to find out how much water was removed during the testing. B Feb * * * Page 6 of 15

7 SYSTEM LAYOUT (Not to Scale) 16 EPDM Membrane Cement Boards Cap Sheet Re-roofing System Insulation 32 EPDM Membrane A Cement Boards Insulation 2 Ply Vapour Barrier System 1 Poured Concrete Steel Deck A B Feb * * * Page 7 of 15

8 SYSTEM DETAILS-SECTION AA (Not to Scale) EPDM Membrane from re-roofing sealed along the perimeter using 1 Butyl Gum & 2001 Bonding adhesive EPDM membrane 1 2 Cement board & insulation Fire guard mat EPDM membrane Re-roofing System 1 2 Adhesive Cement board Insulation Cap sheet Base sheet System 1 Primer EPDM Membrane from System 1 sealed along the perimeter using 1 Butyl Gum, 2001 Bonding adhesive & termination bar Concrete Steel deck B Feb * * * Page 8 of 15

9 INSTRUMENTATION LAYOUT (Not to Scale) 8 (2.44m) 2.5 inch (64 mm) hole 12 (305mm) D1 D2 16 (4.88m) 50 (1270 mm) 4 (1.22m) Pressure Tap 1 Deflection sensor 1 & 2 B Feb * * * Page 9 of 15

10 Suction pressure, psf Time Histories Time, sec B Feb * * * Page 10 of 15

11 Appendix A: System Installation Process System 1 Concrete deck 2-ply Mod. Bit. membrane as vapor barrier Insulation boards were loose laid on top of the vapor barrier ½ (13 mm) thick Perma Base cement boards B Feb * * * Page 11 of 15

12 Cement boards were loose laid above the ISO 2001 Company EPDM Bonding Adhesive Bonding adhesive was applied to the membrane and cement board. After few minutes of drying until the adhesive was tacky to touch, the membrane was adhered to the cement board Membrane seam overlapped with 6 (152 mm) EPDM seam Tape B Feb * * * Page 12 of 15

13 At the perimeter, the EPDM membrane was adhered to vapor barrier with 2001 bonding contact adhesive and 1 (25 mm) butyl gum, and then a termination bar was fastened with 1 ½ (38 mm) zinc nail in rivet at 7 (178 mm) o/c as the membrane edge sealing technique Completed System 1 B Feb * * * Page 13 of 15

14 Appendix B : System Installation Process Moisture Removal Concept on a Re-roofing System For pressure equalization, EPDM membrane of System 1 was cut along the cement board joints The re-roofing system comprised of two configurations On a 12 x 12 (3.66m x 3.66 m) area of System 1, insulation was loose laid on top the existing membrane and cement board was loose laid on top the insulation On a 12 x 11 ( 3.66 m x 3.35 m) area of System 1, pre-weighed fire guard mat was loose laid on top the existing membrane 23 liters of water was poured on top the fire guard mat B Feb * * * Page 14 of 15

15 The re-roofing system was completed by installing a new 60mil non-reinforced membrane on top the cement boards and fire guard mat Completed System ready for testing System during dynamic testing Weighing of the fire guard mat after the dynamic testing B Feb * * * Page 15 of 15