Sustainability assessment for single ply roofing membranes

Transcription

1 NSF International Standard for Sustainability Sustainability assessment for single ply roofing membranes 2 References The following documents contain provisions that, through reference, constitute provisions of this Standard. At the time this Standard was balloted, the editions listed below were valid. All documents are subject to revision, and parties are encouraged to investigate the possibility of applying the recent editions of the documents indicated below. 2.1 Normative references ANSI/ASHRAE/IESNA Energy Standard for Buildings Except Low-Rise Residential Buildings 1 ASTM D4434 / D4434M 09, Standard Specification for Poly(Vinyl Chloride) Sheet Roofing 2 ASTM D4637 / D4637M 10, Standard Specification for EPDM Sheet Used In Single-Ply Roof Membrane 2 ASTM D , Standard Specification for Ketone Ethylene Ester Based Sheet Roofing 2 ASTM D e1, Standard Specification for Thermoplastic Polyolefin Based Sheet Roofing2 ASTM D , Standard Specification for Reinforced White PIB Sheet Used in Roofing Membrane 2 ASTM E108 10a, Standard Test Methods for Fire Tests of Roof Coverings 2 NOTE For ASTM references, the standard referenced in the normative references will be the most current version of the standard. Products). To avoid having to ballot the standard every time a referenced standard is updated, the committee proposed to remove the dates from the ASTM references and make a note that the most current version will apply. 1 American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, N.E. Atlanta, GA < 2 ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA <

2 Informational references ASTM C , Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer 2 ASTM D , Standard Specification for Compostable Plastics 2 ASTM E903 96, Standard Test Method for Solar Absorbance, Reflectance, and Transmittance of Materials Using Integrating Spheres (Withdrawn 2005) 2 ASTM E , Standard Test Method for Gravimetric Determination of Phosphorus in Phosphorus- Copper Alloys or Phosphorus-Copper-Silver Alloys (Withdrawn 2006) 2 ASTM E , Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field 2 NOTE For ASTM references, the standard referenced in the normative references will be the most current version of the standard. Products). To avoid having to ballot the standard every time a referenced standard is updated, the committee proposed to remove the dates from the ASTM references and make a note that the most current version will apply. 5.7 Post-consumer single ply roofing membrane reclamation (maximum 3 points) The manufacturer shall demonstrate a program for reclamation and recycling of post-consumer single ply roof membrane. This program shall encourage recycling infrastructure development and should shall include at a minimum: chain of custody; tracking; and take-back process. 3 points shall be awarded for achieving increasing annual performance targets. Years 1 & 2 The manufacturer shall demonstrate that the program is active and ongoing at a rate of at least 10,000 pounds per year.

3 Years 3, 4 & 5 The manufacturer shall demonstrate that the program is active and ongoing at a rate of at least twice the weight in Year 1. Years 6 and beyond The manufacturer shall demonstrate that the program is active and ongoing at a rate of at least four times the weight in Year 1. NOTE Year 1 is one year after implementation of a recycling program that meets the requirements of this credit. Products). The word shall is needed instead of should to show that this is mandatory, and not optional. 5.8 Pre-consumer single ply roofing membrane reclamation (maximum 2 points) The manufacturer shall receive 1 point for having a program for reclamation and recycling of preconsumer single ply roofing membrane. This program should shall include at a minimum: collection process; and recycling location. The manufacturer shall receive 1 point for demonstrating that the program is active and ongoing. Products). The word shall is needed instead of should to show that this is mandatory, and not optional. 6.5 Optimization of material resources Inefficient materials selection, supplier delivery, production processes, and warehousing operations can lead to high levels of waste to landfill generation and corresponding losses in production yields. The criteria in this section are intended to encourage the maximization of yield from product raw materials and to minimize the generation of waste to landfill materials during production from these operations. Products). The proposed change to this section clarifies waste from manufacturing process from the waste generated after the product leaves the manufacturing facility.

4 Waste minimization program (maximum 1 point) The manufacturer shall receive 1 point for having documented an operational waste to landfill minimization program that includes quantification of waste generation rate Waste minimization (maximum 1 point) The manufacturer shall demonstrate overall reduction in waste to landfill from manufacturing facilities. The manufacturer may receive a maximum of 1 point and the measurement shall be based as follows: the manufacturer shall receive 1 point for demonstrating a year to year waste to landfill generation reduction rate of at least 2% per year (calculated as a five-year rolling average); or the manufacturer shall receive 1 point for demonstrating an annual average total waste to landfill generation rate of less than 2% of plant production on a weight basis. This credit is intended to allow a manufacturer to continue to receive 1 point after waste to landfill generation is reduced to a minimum level. Products). The proposed change to this section clarifies waste from manufacturing process from the waste generated after the product leaves the manufacturing facility. Since the minimum level is not defined, the committee proposed to move the last sentence from this section Service life (time in field) Assessments on existing roofs are based upon a range of climates. Three roofs require assessment; one from each of the following climates: Hot humid, hot dry, cold temperate (ASHRAE ) climate zones. All three climates shall be documented for elements included in Prerequisite: The manufacturer shall document that a post-installation inspection protocol is in place and actively practiced (e.g., manufacturer s inspection for warranty issuance). Reason: This was discussed during the June 4, 2012 JC Meeting and is based on Issue Paper 2 (Submitted by Stan Graveline). There is a general assumption in the JC that the manufacturer s post-installation warranty would fulfill the requirements of this section but there is a question about whether auditors/certifiers would recognize this during certification. The proposed language is added to provide clarification Prerequisite: The manufacturer shall document a requirement for installer training provided by the manufacturer.

5 Service life in field functionality determination (maximum 12 Points) The manufacturer shall receive 2 points for having a program in place that provides documentation that the roofing membranes are performing as intended in each regional geography as described in over a minimum of 10 year service life. Additional points shall be earned as shown below. Documentation shall include at a minimum water tightness data, number of repairs, and repairability. The documentation shall be confirmed or attested to by a competent individual or organization as a third party. Third party representatives can include Professional Engineers, Registered Roof Consultants, or Registered Architects with experience inspecting roofs, evaluating them, and reporting their condition. 1 points for demonstrating product functionality in the field at 10 years of service life; or 4 points for demonstrating product functionality in the field at 15 years of service life; or 7 points for demonstrating product functionality in the field at 20 years of service life; or 10 points for demonstrating product functionality in the field at 30 years of service life. Reason: This was discussed during the June 4, 2012 JC Meeting and is based on Issue Paper 3 (Submitted by Stan Graveline). The committee proposed to remove the number of repairs because manufacturers would only have data about the repairs related to warranty, not repairs done by the building owner. The number of repairs is not believed to be a representative measurement of the longevity of the roof membrane because repairs can be the result of abuse or neglect of the roof, not the properties of the membrane itself. 7.4 Membrane surface contribution The intent of the criteria in this section is to assess the aspects of the roof construction contributing to reduction of urban heat island effect Prerequisite: For point eligibility, the manufacturer shall have formal specifications documenting product integration/incorporation for each requirement listed below. Reason: This was discussed during the June 4, 2012 JC Meeting and is based on Issue Paper 4 (Submitted by Stan Graveline). The committee proposed to remove Section because it is unclear how this sentence should be interpreted. This sentence relates to the ballast system which is not the scope of this standard Reflectivity (maximum 3 points) The manufacturer shall receive up to 3 points for demonstrating Energy Star or equivalent reflectivity criteria. 1 point for meeting ENERGY STAR or equivalent three-year reflectivity criteria; or 2 points for meeting ENERGY STAR or equivalent three-year reflectivity criteria after 5 years in the field; or 3 points for meeting ENERGY STAR or equivalent three-year reflectivity value after 10 years in the field.

6 The protocol for reflectivity determination shall be the CRRC-1 Method #1: Standard Practice for Measuring Solar Reflectance of a Flat, Opaque, and Heterogeneous Surface Using a Portable Solar Reflectometer. 7.5 Process based Maintenance program and recommendations (maximum 3 points) The manufacturer shall receive 3 points for establishing a roofing membrane maintenance program conducted by a roofing professional (see for examples of roofing professionals) and providing a method for communication to the end-user (Operations and Maintenance Manual or product information package). At a minimum, the program shall include inspections twice per year, after storm events, and recommendations for maintenance of accessory components (e.g., clear drains). The program should also include cleaning recommendations, inspection frequency, repair protocol, and chemical compatibility information for the expected service life of the membrane Quality management system (QMS) (maximum 7 points) To qualify for this credit, all of the singly ply roofing membranes shall be manufactured at the same facilities or facilities with a quality management system (QMS) satisfying at a minimum, the following: site specific qualification; and annual site audit. Products). Before the removal of the same facilities or, the sentence says that if there is only one manufacturing facility, then a QMS system is not needed.