TESTING APPLICATION STANDARD (TAS) No. 114-11
TEST PROCEDURES FOR ROOF SYSTEM ASSEMBLIES
IN THE HIGH-VELOCITY HURRICANE ZONE JURISDICTION
1.1 This protocol covers the requirements for approval of membrane roof system assemblies in the high-velocity hurricane zone jurisdiction. An approved membrane roof cover is one that meets the criteria of this protocol for accelerated weathering, corrosion of metal parts, F.I.T. [Fatigue, Indentation (dynamic and static puncture) & Temperature], fire, foot traffic, hail, leakage, and wind.
1.2 This protocol applies to any membrane roof cover intended to protect the roof assembly and building contents from the weather.
1.3 The performance of a membrane roof cover depends partially on the substrate materials over which it is applied. It is therefore necessary to evaluate the roof system assembly as a whole, including the cover and auxiliary items necessary to build up a roof system assembly. These components are included within the subject test criteria.
1.4 This Protocol is intended to evaluate only those hazards investigated, and is not intended to determine suitability for the end use of product.
1.5 This protocol evaluates roof system assemblies for their performance regarding accelerated weathering characteristics, corrosion resistance of metal parts, [(Fatigue, Indentation (dynamic and static puncture) & Temperature)], external fire (fire or burning debris from above), foot traffic resistance, susceptibility from hail storm damage, leakage, and simulated wind uplift.
1.6 Approval is based on satisfactory evaluation of the product(s) and manufacturer in the following major areas:
1.6.1 Examination and tests to evaluate: 1) the performance of the product as required by the authority having jurisdiction, and, as far as practical, 2) the marking procedures which shall be used to identify the product as set forth in Section 1517 of the Florida Building Code, Building.
1.7 Continued approval is based upon:
1.7.1 production or availability of the product as currently approved;
1.7.2 the continued use of acceptable quality control procedures;
1.7.3 satisfactory field experience; and,
1.7.4 compliance with the terms and conditions of the Product Approval.
1.8 All testing and calculations shall be conducted by an approved testing agency and all test reports, including calculations, shall be signed and sealed by a professional engineer.
1.9 Design pressures calculated in accordance with ASCE 7 are permitted to be multiplied by 0.6 for the purposes of comparing to tested pressures in TAS 114.
2. Referenced Documents:
2.1 Florida Building Code, Building: Chapters 15 and 16 (High-Velocity Hurricane Zones)
2.2 Application Standards:
TAS 105 Field Withdrawal Resistance Test Procedure
TAS 105 Field Withdrawal Resistance
Appendix A Test Results Report
2.3 Application Standards:
RAS 111 Standard Requirements for Attachment of Perimeter Flashing and Woodblocking
RAS 117 Standard Requirements for Bonding or Mechanical Attachment of Insulation Panels and Mechanical Attachment of Anchor or Base Sheets to Various Substrates
RAS 137 Standard Requirements for Mechanical Attachment of Single-Ply Membrane Roof Coverings to Various Substrates
2.4 Factory Mutual Engineering Corporation:
Loss Prevention Data Sheet 1-7, April, 1983
Loss Prevention Data Sheet 1-28, September, 1991
Loss Prevention Data Sheet 1-28(S), November, 1991
Loss Prevention Data Sheet 1-30, May, 1990
Loss Prevention Data Sheet 1-48, June, 1991
2.5 Factory Mutual Research Corporation Approval Standards:
4450 Class I Insulated Steel Deck Roofs
4470 Class I Roof Covers Annual Approval Guide, 1994
2.6 The American Society of Civil Engineers (ASCE):
ASCE 7; Minimum Design Loads for Buildings and Other Structures
2.7 ASTM Standards:
A 90 Standard Test Method for Weight of Coating on Zinc-Coated (Galvanized) Iron or Steel Articles
A 641 Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire
B 117 Standard Test Method for Salt Spray (Fog) Testing
D 638 Standard Test Method for Tensile Properties of Plastics
D 751 Standard Test Methods for Coated Fabrics
D 1781 Standard Test Method for Climbing Drum Peel for Adhesives
E 70 Standard Test Method for pH of Aqueous Solutions With the Glass Electrode
E 108 Standard Test Methods for Fire Tests of Roof Coverings
E 380 Excerpts from the Standard Practice for Use of the International System of Units (SI) (the Modernized Metric System)
G 23 Standard Practice for Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials
G 26 Standard Practice for Operating Light-Exposure Apparatus (Xenon- Arc Type) With and Without Water for Exposure of Nonmetallic Materials
G 53 Standard Practice for Operating Light- and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials
G 85 Standard Practice for Modified Salt Spray (Fog) Testing
2.8 DIN Standards:
50018 Testing in a Saturated Atmosphere in the Presence of Sulfur Dioxide
2.9 Norwegian Building Research Institute:
Roof Coverings: Dynamic Wind-Load Resistance
2.10 Roof Consultants Institute:
Glossary of Terms
2.11 Centre Scientifique et Technique du Batiment
Classification for Roofing Systems
3. Terminology & Units:
3.1 Definitions—For definitions of terms used in this Protocol, refer to Chapter 2 and Section 1513 of the Florida Building Code, Building; and/or Section 6.2, herein; and/or the RCI Glossary of Terms. The definitions of the Florida Building Code, Building shall take precedence.
3.2 Units—For conversion of U.S. customary units to SI units, refer to ASTM E 380.
4. Significance of Use:
4.1 The requirements of this protocol are based on experience, research and testing or the standards of other national and international organizations. The advice of manufacturers, users, and trade associations is also considered.
4.2 Meeting these requirements will qualify a product as a Product Approved roof system assembly. An approved roof system assembly of itself is not a significant fire hazard when reviewed from the aspect of external fire, and can withstand expected wind uplift forces, hail stones, etc., when installed in accordance with all Product Approval requirements. Approval requirements prohibit substitution of components in the roof system assembly without a revision to the manufacturer’s Product Approval. Please note that some Approvals include modified use of terminology relating to performance in hail. The High-Velocity Hurricane Zone jurisdiction is considered a moderate hail zone, as noted on the National Hailstorm Map published by the National Oceanic and Atmospheric Administration (NOAA).
4.3 Products that do not conform to these requirements may be Approved if they meet the intent of this Protocol. Conversely, those that do conform may not be Approved if other conditions prevail.
4.4 Effective date of revision:
4.4.1 The effective date of a protocol mandates that all products tested for Approval after the effective date must satisfy the requirements of that protocol. Products Approved under a previous Protocol must comply with the new version by the effective date or such date established by the Authority Having Jurisdiction or else forfeit Product Approval. The effective date may apply to the entire protocol, or, where so indicated, only to specific paragraphs of the protocol.
4.4.2 The effective date of this protocol is January 31, 1995, for full compliance with performance requirements.
5. General Information:
5.1 Roof covers:
5.1.1 Roof covers are supplied in either roll, sheet or liquid form. They may be fabricated in multi-plies (layers) or as a single ply. The single ply sheets are usually manufactured from thermoplastic materials (e.g., PVC - polyvinyl chloride); thermostat materials (e.g) EPDM - ethylene propylene diene monomers); uncured elastomer materials (e.g., PIB - polyisobutylene); or modified bitumen materials (e.g. rubberized asphalt or asphalt saturated or coated materials). The liquid covers may be supplied as silicone, polyurethane, chlorosulfonated polyethylene, acrylic, etc. Multiply systems may be various bituminous or coal tar pitch systems utilizing organic, fiberglass or polyester reinforced base, anchor or interply reinforcement.
5.2 Application of this standard:
5.2.1 To qualify as an approved roof system assembly, each assembly shall satisfy all of the following performance criteria, and be installed as tested over specific insulations and/or decks. Insulated and uninsulated deck types are listed in Product Approvals as follows:
· Lightweight concrete;
· Cementitious wood fiber; and,
· Poured gypsum concrete.
5.2.2 The Approval examination includes 1) accelerated weathering; 2) corrosion resistance of metal parts; 3) F.I.T. testing which includes fatigue, dynamic and static puncture and temperature testing (F.I.T. testing is specified for modified bitumen roof membranes only; however, static and dynamic puncture testing is required for all membrane types); 4) external fire; 5) foot traffic, 6) simulated hail resistance; 7) water leakage resistance; 8) simulated wind uplift, and other tests as noted. A complete review of construction and application specifications and details shall be conducted to insure, as far as possible, a practical and reliable installation.
5.2.3 As noted in Section 4.2, approved components within a roof system assembly may not be substituted with components not listed in Product Approvals. However existing data in Product Approvals may be extrapolated, in compliance with methods set forth in RAS 117 (for insulation or base sheet attachment) or RAS 137 (for single-ply membrane attachment), to determine acceptable fastener spacings in elevated pressure zones.
6. Applicable Documents and Glossary:
6.1 Applicable documents:
6.1.1 The following standards, test methods and practices are referenced in this protocol and are summarized in the appendices herein.
· Fire tests of roof coverings - ASTM E 108, American Society for Testing and Materials
· Roof coverings: dynamic wind-load resistance, Norwegian Building Research Institute
· Uplift pressure test standard for Class I roof covers, Factory Mutual Research Corporation
· Uplift pull test standard for Adhered Class I Roof Covers, Factory Mutual Research Corporation
· Modified Salt Spay (Fog) Testing–ASTM G 85, American Society for Testing and Materials
· Testing in a Saturated Atmosphere with the Presence of Sulfur Dioxide–DIN 50018
· Susceptibility to Hail Damage Test Standard for Adhered Class I Roof Covers, Factory Mutual Research Corporation
· Susceptibility to Leakage Test for Class I Roof Covers, Factory Mutual Research Corporation
· Small Scale QC and Physical Properties Tests for Class I Roof Covers, Factory Mutual Research Corporation
· 12 foot by 24 foot Uplift Test Procedure, Factory Mutual Research Corporation
· F.I.T. Classification for Roofing Systems– Centre Scientifique et Technique du Batiment
6.2 Glossary–The following definitions shall relate to this protocol only.
Adhere: To cause two surfaces to be held together by adhesion. Single-ply membranes are often “partially-” or “totally-adhered” to a substrate with the use of contact cements, such as air-cured phenolic-neoprene mixtures, or other similar adhesives.
Ballast: An anchoring material, such as rounded river rock, gravel, or precast concrete pavers, which is used to hold single-ply roofing membranes in place and to stabilize the roof system from wind uplift forces. Although ballasting materials differ greatly in size, composition, and weight, they are typically applied at a minimum rate between 10 and 15 pounds per square foot of roof area. Thus, ballast should be applied only to those roof structures able to support this added weight. Also, ballast materials should be large and heavy enough to resist being blown off the roof, yet light and smooth enough to avoid damaging the membrane. (Systems utilizing these applications are not generally approved in the high-velocity hurricane zone jurisdiction.)
Batten: A narrow metal band or plate, usually of galvanized steel or aluminum, which is used to fasten or hold in place a single-ply membrane, to prevent its displacement.
Delamination: Separation of the plies in a roof membrane or system in any laminated roofing material or component, e.g., laminated layers of rigid insulation or the felt plies in a built-up roof.
Disc Fasteners: A wide variety of devices of mechanical assemblies used to attach single-ply membranes, insulation boards and/or base sheets to a substrate or deck. Disc attachments generally consist of a square- or circular-shaped plate with a hole in the center, through which a screw or nail-like clip may be inserted. They are generally set in place with a drill-like device.
EPDM: Designated nomenclature for a tripolymer of ethylene, propylene, and diene.
Field Seam: A splice made in the field which joins two sheets together using an adhesive splicing tape, or heat- or solvent-welding.
Heat Welding: A process or method of melting and sealing or fusing the overlapping edges of separate sections of thermoplastic or uncured elastomeric roofing membranes by the application of heat and pressure. Small, portable “hot air” or “heat welding” devices are available which can, without the use of chemicals or adhesives, heat seal or fuse together overlapping edges to form waterproof seams.
Loosely Laid: Membranes which are not attached to the substrate except at the perimeter of the roof and at projections. Loosely laid membranes are held in place with appropriate and adequate ballast, such as round river washed stone, gravel, pavers, etc. This assembly may be used only on roof structures able to support the added weight of the ballast, which is generally applied at a minimum rate of 10 pounds per square foot of roof area. (These systems are not generally approved in the high-velocity hurricane zone jurisdiction.)
Mechanically Fastened Membrane: Generally used to describe single-ply membranes which have been positively attached at intervals to the substrate, usually with various fasteners and other mechanical devices such as battens. Mechanical fastening permits the membrane to float free between the fasteners, and allows greater movement between the membrane and the substrate than in fully adhered systems.
Modified Bitumen: A material consisting of bitumen which has been modified through the inclusion of one or more polymers and may contain stabilizers and other additives. Modified bitumen roofing membranes may also contain a reinforcing material.
Partially Adhered: A roofing assembly in which the membrane has been “spot affixed” to a substrate, usually with an adhesive, such as contact cement, or a mechanical device.
Polyisobutylene (PIB): A synthetic uncured elastomer produced by the copolymerization of isobutylene and isoprene. PIB roofing membranes are composed of polyisobutylene, and various other reinforcing fillers and stabilizers.
Polyvinylchloride (PVC): A thermoplastic polymer, synthesized from vinyl chloride monomer. Membranes containing polyvinyl chloride are used in single-ply roofing membranes.
Self-Adhesive Membranes: Single-ply membranes which can adhere to a substrate and to itself at overlaps without the use of an adhesive. The undersurface of a self-adhesive membrane is protected by a “release paper” that prevents the membrane from bonding to itself during shipping and handling. Later, as the membrane is unrolled, the release paper is peeled away, and the self-adhering undersurface is applied to the substrate. Successful application of a self-adhesive membrane requires a clean and dry substrate and the application of firm, uniform pressure.
Single-Ply Membranes: Roofing membranes that are field applied using just one layer of membrane material (either homogenous or composite) rather than multiple layers. However, the manufacture of the single-ply sheeting may involve lamination or several layers of the same or different materials.
Thermoplastic: Polymers that soften when heated and harden when cooled. This process is repetitive provided the material is not heated above the point at which decomposition occurs.
Thermoset: A material that solidifies or “sets” irreversibly when heated. This property is usually associated with crosslinking of the molecules induced by heat or radiation.
TPO: Designated nomenclature for thermoplastic olefin elastomer based single-ply sheets made from blends of polypropylene and ethylene-polypylenene rubber.
Wind Uplift: The force generated by wind on a roof system or components in a roof system resulting from wind-induced pressures. Wind that is deflected around and across the surfaces of a building causes a drop in air pressure immediately above the roof surface. As a result, the air in the building will flow beneath the membrane and roof deck and tend to lift the roof upward. Wind uplift may also be caused by the introduction of wind underneath the membrane and roof edges, where it can cause the membrane to balloon and pull away from the substrate. Roof loss by wind can be avoided or prevented by proper installation and adequate adhesion, attachment, or ballasting.
7. General Requirements:
7.1 During the initial investigation and before physical testing, the manufacturer’s specifications and details shall be reviewed to assess the ease and practicality of installation and use. Confirmation of specifications and details are assessed through an inspection of a field application or through viewing of a video of an application which includes all pertinent areas of the application. The product shall be capable of being used within the limits of the Approval investigation.
7.2.1 Packaging material and/or containers shall bear the manufacturer’s name a nd product identification in compliance with provisions set forth Section 1517 of the Florida Building Code, Building.
7.2.2 Product shall be marked by embossing, painting or cutting in compliance with Florida Building Code, Building requirements.
7.3.1 Printed, published installation instructions shall be provided by the manufacturer to demonstrate proper installation procedures to be followed by installers. As part of the approval examination, at least one inspection of a field installation, during and/or after its completion, shall be required. In some cases, a continued program of inspections shall be necessary to assess the application procedures or changes within the application techniques.
7.3.2 Review of a Factory Mutual Approval Report and/or the listing of the roof system assembly in the current edition of the Factory Mutual Approval Guide may be, at the discretion of the chief compliance officer, sufficient evidence of compliance with any portion of this protocol.
8. Performance Requirements and Tests:
8.1.1 This protocol is intended to evaluate a roof system assembly for its performance as it relates to accelerated weathering, corrosion of metal parts, F.I.T. performance (Fatigue, Indentation and Temperature), fire, foot traffic, hail, leakage, and wind. The applicant may submit up to five roof system assemblies in its Application for Product Approval. The Authority Having Jurisdiction shall respond, in writing, stating which tests shall be required for sufficient evidence of compliance.
Note: Roof adhesives effect the potential fire spread properties of a roof system assembly. In addition, combustible adhesives are susceptible to ignition during roof construction and cure periods. Therefore, fire testing shall be done after a minimum 28 day cure period.
8.2.1 External fire testing shall be in strict compliance with ASTM E 108, as noted in Appendix A herein.
8.2.2 Testing shall include:
· spread of flame;
· intermittent flame;
· burning brand; and
· flying brand
tests as applicable.
8.2.3 Tests of alternate constructions may be waived by the Authority Having Jurisdiction if considered less hazardous than those previously tested.
8.2.4 During these tests, there shall be no flaming or burning particles blown off the test assembly and reaching the floor.
8.3 Wind resistance:
Note: Perimeter flashing, including metal components, shall be in fabricated and installed in compliance with RAS 111 for all approved roof system assemblies.
8.3.1 Totally or partially adhered roof system assembly:
· The adhesive(s) used to bond insulation and/or roofing plys or membrane shall penetrate or adhere to the substrates sufficiently to establish an adequate bond without degradation of the insulation. It shall be sufficiently fluid for effective application in accordance with the manufacturer’s directions. In addition, the application shall not be adversely affected by temperature extremes. Applications within the Florida Building Code, Building jurisdiction generally take place at temperatures above 70°F (21°C).
· The adhesives shall achieve substantial adhesion with the insulation and at the laps within a minimum specified time such that winds will not lift the covering and/or insulation before the adhesive bond has fully developed. The solids within the adhesive shall generally remain in suspension. Any settlement must be redispersed after 5 minutes of agitation. Adhesives shall be designed and formulated to facilitate reliable field application according to the manufacturer’s specifications. All adhesives shall be labeled with maximum “open” time in a high temperature, high humidity climate to reduce the chance of application spoiled adhesive.
188.8.131.52 Simulated uplift testing
· After a 4 day laboratory cure time at ambient conditions, the totally or partially adhered roof system assembly shall be initially tested for uplift resistance in compliance with the test procedures outlined in Appendix C, D, H or J, herein. The roof system assembly shall attain a passing load not less than 30 psf (1.5 kPa). Thereafter, the roof system assembly test specimen shall be allowed to cure for the remaining cure time. Failure to meet this initial four (4) day cure time uplift criteria shall result in failure of the roof system assembly and no further testing shall be conducted.
· After the remaining laboratory cure time, the totally or partially adhered roof system assembly shall be tested for uplift resistance in compliance with the test procedures outlined in Appendix C , D or J, herein.
8.3.2 Mechanically attached roof system assembly:
184.108.40.206 Mechanically attached roof covers are held in place by “single-type” or “batten type” fastener assemblies.
· “Single-type” fastener assemblies include a fastener accompanied by a stress distribution plate which is installed in a specific pattern to secure roofing components within a roof system assembly. Stress plates are available in a variety of shapes and sizes, each of which may provide differing uplift resistance results when installed with the same fastener in an identical pattern. They may be: 1) installed under the roof cover with adhesive applied to the top surface of the plate; 2) installed through the roof cover and sealed; 3) installed within the lap as the covering is being installed; or, 4) installed under the roof cover with an integral fastener above (non-piercing types).
· “Batten-type” fastener assemblies have a long bar or batten strip through which the fasteners are driven. They are usually installed: 1 ) through the roof cover with a patch or sealant applied over the batten; 2) as the cover is being installed within the lap; or, 3) under the roof cover with an integral fastener applied over the cover (non-piercing type).
· Fasteners and stress plates shall be tested in compliance with the requirements set forth in TAS 117, Appendices A, B and C.
· All fasteners, other than base ply fasteners, shall record a withdrawal resistance value under static load greater than or equal to 275 lbf (1220 N) and a withdrawal resistance value under pulsating load greater than or equal to 175 lbf (778 N) when tested in compliance with Appendix A of TAS 117.
· Fasteners shall be of proper length to penetrate the roof deck, if applicable. For steel deck application, fasteners must penetrate the top flange. Fasteners shall hold securely in the structural deck and prevent the covering from being lifted off. The fastening system shall secure the insulation in place under the roof cover. (Preliminary fasteners shall be used to maintain the insulation in place under the cover. See RAS 117.) If fasteners are installed within the lap, they shall be installed so as not to weaken the field seam. Any separation or delamination at the field seam that would require remedial measures shall be considered a failure. Materials and design shall be adequate to prevent fastener failure. The design must insure permanent securement to the deck, resisting horizontal and vertical deck movement due to temperature changes, live loads on the roof, and to vibration.
· The fastener shall be capable of proper installation with the recommended equipment without damage to the roof cover. The fastener application density or spacing shall be initially verified through simulated uplift pressure testing, as noted in Section 220.127.116.11, herein. Data extrapolation for fastener density or spacing shall be conducted in strict compliance with RAS 117 (for insulation or base sheet attachment) or RAS 137 (for single-ply membrane attachment). Data extrapolation is limited by the test method utilized for simulated uplift testing. (See Section 18.104.22.168, herein.)
· A minimum of two approved insulation fastener assemblies are required for preliminary attachment of insulation panels having dimensions less than or equal to 4 feet by 4 feet (1.2 m by 1.2 m). A minimum of four approved insulation fastener assemblies are required for preliminary attachment of insulation panels having dimensions greater than to 4 feet by 4 feet (1.2 m by 1.2 m).
22.214.171.124 Simulated uplift testing:
· Mechanically attached Roof System Assemblies shall be tested using one or more of the test procedures outlined in Appendices B, C, and/or J.
· The test procedure outlined in Appendix B is a dynamic uplift test utilizing a dynamic wind chamber for testing of all mechanically attached roof system assemblies having a maximum fastener row spacing of 72 inches. Appendix B simulated uplift testing generates a fastener assembly design value and a maximum allowable fastener density or spacing. This maximum allowable fastener density or spacing may be altered through data extrapolation, in compliance with RAS 137 (for single-ply membrane attachment), to meet design pressures for a specific building.
· The test procedure outlined in Appendix C is a static uplift test utilizing a 5 foot by 9 foot (1.5 m by 2.7 m) pressure vessel for testing of mechanically attached roof systems assemblies with a row spacing less than or equal to 48 inches (1.2 m) o.c. or a fastener grid spacing less than or equal to 12 inches by 24 inches (0.6 m by 1.2 m); (8 square feet per attachment point). The roof system assembly shall attain a passing load not less than 90 psf (4.2 kP a). Data generated from Appendix C simulated uplift testing may not be used for extrapolation.
· The test procedure outlined in Appendix J is a static uplift test utilizing a 12 feet by 24 feet (3.6 m by 7.6 m) pressure vessel for testing of mechanically attached roof systems assemblies with a row spacing greater than 48 inches (1.2 m) o.c. or a fastener grids pacing greater than 12 inches by 24 inches (0.6 m by 1.2 m); (8 square feet per attachment point). The roof system assembly shall attain a passing load not less than 90 psf (4.2 kPa). Data generated from Appendix J simulated uplift testing may be used for extrapolation, in compliance with RAS 137 (for single-ply membrane attachment), to meet design pressures for a specific building. Extrapolation of data from Appendix J simulated uplift testing is limited to 1.75 times the maximum uplift pressure noted in the Product Approval.
· The Authority Having Jurisdiction may, at his/her option, accept and publish in Product Approvals roof system assemblies that do not meet the minimum 90 psf (4.2 kPa) uplift criteria providing the manufacturer has one or more assemblies that meet the minimum uplift criteria.
8.4 Corrosion Resistance:
8.4.1 Nails and carbon steel fasteners:
126.96.36.199 All nails and carbon steel fasteners shall be tested for corrosion resistance in compliance with ASTM Standard Practice G 85 [(Modified Salt Spray (Fog) Testing)], Annex A5 (Dolute Electrolyte Cyclic Fog/Dry Testing) as modified for the highvelocity hurricane zone and noted in Section 2 of Appendix E, herein.
8.4.2 Batten bars, stress distribution plates and fasteners (other than nails):
188.8.131.52 All batten bars, stress distribution plates, and metal fasteners (other than nails) shall be tested for corrosion resistance in compliance with DIN 50018 as noted in Section 3 of Appendix E, herein.
184.108.40.206 Each specimen shall be exposed to air saturated with water vapor (104°F, 40°C) containing a mild concentration of sulfur dioxide for 8 hours, followed by a drying period of 16 hours at room temperature. After each drying cycle, the specimen shall be inspected and signs of corrosion or rust shall be recorded.
220.127.116.11 The 24-hour cycle shall be repeated 15 times and the corrosion percentage shall be recorded.
18.104.22.168 To evaluate the corrosion increase after Cycle 1 through Cycle 15, the specimen shall be mounted to blue painted sheet backdrop.
8.5 Hail resistance:
Note: The high-velocity hurricane zone jurisdiction is a “moderate hail” area, as designated by the National Oceanic and Atmospheric Administration (NOAA).
8.5.1 The roof system assembly shall be tested for hail damage resistance in compliance with either of the Simulated Hail Damage Test procedures noted in Appendix F, herein. A minimum of ten drops from the impactor is required, five of which shall be conducted in a field-fabricated seam or flashing detail where appropriate.
8.5.2 The roof cover and the field seam shall not show signs of cracking, splitting, internal separation, delamination, or rupture. Under adhered conditions, minor separation of the roof cover from the substrate (directly under the impact area) is acceptable performance for monolithic decks only (e.g. lightweight concrete, structural concrete, and gypsum, etc.). Severe degradation, such as cracking, crushing, etc., of the deck itself is reason for failure. The cover thickness shall be checked at the points of impact.
8.6 Water leakage:
8.6.1 The roof cover shall be tested for water leakage resistance in compliance with the Water Leakage Test procedures noted in Appendix G, herein. A sample 18 inches (45 cm) in diameter shall be prepared and, where appropriate, a field seam and/or penetration detail shall be included. The sample shall be conditioned (weathered) for 1000 hours in a fluorescent ultraviolet condensation type weathering apparatus before being cut into a size 10 inches (25 cm) in diameter and placed in the leakage test apparatus. The sample shall be maintained at ambient conditions.
8.6.2 The roof cover and field seam and/or penetration detail shall not show signs of a leakage during or at the end of the 7 day period.
8.7 Accelerated weathering:
8.7.1 Accelerated weathering testing shall be in strict compliance with ASTM G 23 or G 26.
8.8 F.I.T. Testing (F = Fatigue, I = Indentation, T = Temperature):
Note: Complete F.I.T. testing is required for modified bitumen roof membranes only; however, static and dynamic puncture resistance testing, which forms a part of F.I.T., is required for all membrane types.
22.214.171.124 Fatigue testing of modified bitumen roofing membranes shall be in compliance with the test procedures outlined in Appendix K, herein.
8.8.2 Static and dynamic puncture:
126.96.36.199 Static and dynamic puncture resistance testing shall be in strict compliance with the test procedures outlined in Appendix I, herein.
188.8.131.52 Temperature testing of modified bitumen roofing membranes shall be in compliance with the test procedures outlined in Appendix K, herein.
8.9 Resistance to foot traffic:
8.9.1 Resistance to foot traffic testing shall be in strict compliance with the test procedures outlined in this section.
184.108.40.206 A 3 inch (76 mm) square steel plate with rounded corners shall be centered on the centerline of a 12 inch (305 mm) square horizontal panel and positioned along the butt edge and side joint of the insulation boards.
220.127.116.11 A 200 lbf (889 N) load shall be imposed on the plate. The superimposed load shall be reduced to zero and the sample cover reloaded a minimum of four additional times, with penetration and residual readings taken each time without removing the plate. The specimen shall be inspected after the test and the condition of the cover noted at the steel plate interface.
18.104.22.168 Tearing or cracking of the protective coating causing exposure of the plastic, glass fibers, foam or other compressible core material shall be unacceptable.
9. Manufacturing and Field Installation Requirements:
9.1 Demonstrated QC Program:
9.1.1 A Quality Control Program is required to insure that subsequent roof covers produced by the manufacturer shall present the same quality and reliability as the specific roof cover samples examined. Design quality, conformance to design and performance are the areas of primary concern. Design quality is determined during the examination and tests, and is covered in the Product Approval. Conformance to design is verified by quality control in the following areas:
· Existence of corporate quality control guidelines;
· Incoming inspection and testing;
· In-process inspection and testing;
· Final inspection and testing;
· Equipment calibration;
· Drawing and change control; and,
· Packaging and shipping.
9.1.2 Quality of performance is determined by field performance and by periodic re-examination and testing.
9.1.3 The manufacturer shall establish a system of product configuration control to prevent unauthorized changes, including the following, as appropriate:
· Engineering drawings;
· Engineering change requests;
· Engineering orders; and/or,
· Change notices.
These shall be implemented through policy and detailed procedures to implement engineering change requests, orders or change notices; and records of all revisions to all approved products shall be kept.
9.2 Inspection procedures:
9.2.1 At manufacturing plant:
22.214.171.124 An inspection of the product manufacturing facility may be part of the approval application. Its purpose shall be to determine that equipment, procedures, and the manufacturer’s quality controls are properly maintained to produce a product of the same quality as initially tested.
126.96.36.199 Periodic, unannounced follow up inspections may be conducted to insure continued quality control and product uniformity.
188.8.131.52 The Authority Having Jurisdiction may rely on continued listing of approved systems in the annual Factory Mutual Approval Guide and quarterly supplements as confirmation of requirements under this section.
9.2.2 At site of installation:
184.108.40.206 Field inspections may be conducted to review roof system assembly installations. The inspections shall be conducted to assess ease of application, workability, and conformance to written specifications and details. When more than one application technique is used, one or all may be inspected.
220.127.116.11 The Authority Having Jurisdiction shall review established procedures from recognized testing and listing agencies to confirm compliance with the requests set forth herein.