【as澳大利亚标准】as nzs 42462017 energy efficiencyinstalling insulation in residential buildings

1、NZS 4246:2006New Zealand StandardNZS 4246:2006Energy Efficiency Installing Insulation in Residential BuildingsThe Standard is downloaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard SharingnZs 4246:2006Committee RepResentationThis Standard was prepared under the supervision of the P 4246 Comm

2、ittee the Standards Council established under the Standards Act 1988.The committee consisted of representatives of the following:nominating organisationsBRANZ (Building Research Association of New Zealand) Department of Building and HousingEco InsulationEmployers and Manufacturers AssociationEnergy

3、Efficiency and Conservation Authority (EECA) Housing New Zealand CorporationInsul-fluf Holdings Limited Insulation Services Hawkes Bay Insulpro Manufacturing Limited Ministry for the Environment Terra Lana ProductsaCknowledgementStandards New Zealand gratefully acknowledges the contribution of time

4、and expertise from all those involved in developing this Standard.In particular, Standards New Zealand wishes to acknowledge the financial support of EECA, the Department of Building and Housing, BRANZ and Tasman Insulation, and the photographs and illustrations supplied by Insulpro Manufacturing, E

5、co Insulation, EECA, BRANZ and Tasman Insulation.CopyRightThe copyright of this document is the property of the Standards Council. No part of it may be reproduced by photocopying or by any other means without the prior written approval of the Chief Executive of Standards New Zealand unless the circu

6、mstances are covered by Part III of the Copyright Act 1994.Standards New Zealand will vigorously defend the copyright in this Standard. Every person who breaches Standards New Zealands copyright may be liable to a fine not exceeding $50,000 or to imprisonment for a term not to exceed three months. I

7、f there has been a flagrant breach of copyright, Standards New Zealand may also seek additional damages from the infringing party, in addition to obtaining injunctive relief and an account of profits.Published by Standards New Zealand, the trading arm of the Standards Council, Private Bag 2439, Well

8、ington 6140. Telephone (04) 498 5990; Fax (04) 498 5994. Website HYPERLINK :/ standards.co.nz standards.co.nzAMENDMENTSNo. Date of issue Description Entered by, and dateNZS 4246:2006 New Zealand StandardEnergy efficiency Installing insulation in residential buildingsISBN 1-86975-057-88The Standard i

9、s downloaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard SharingNOTESContentsCommittee Representation .IFC Acknowledgement .IFC Copyright .IFC Referenced Documents . 6Latest Revisions . 6Foreword . 7Review . 7Section1 Introduction . 9 1.1 Objective . 9 1.2 Scope . 9 1.3 Compliance . 10 1.4 I

10、nterpretation . 11 1.5 Notes . 11 1.6 Referenced documents. 11 1.7 Definitions. 122 Insulation materials . 13 2.1 Loose-fill . 13 2.2 Segments and blanket . 13 2.3 Rigid sheet products . 13 2.4 On-ground vapour barriers . 13 2.5 Subfloor reflective insulation . 13 2.6 Pipe lagging . 13 2.7 Hot water

11、 cylinder wrap . 143 Special considerations . 15 3.1 Storage and transport . 15 3.2 Insulation compression . 15 3.3 Water damage . 16 3.4 Recessed light fittings . 16 3.5 Recessed spaces (dropped ceilings) . 18 3.6 Heating appliance flues . 19 3.7 Electrical cables . 19 3.8 Built-in appliances and e

12、nclosurers containing electrial equipment . 19 3.9 Plumbing . 19 3.10 Wall underlay . 20 3.11 Drained and ventilated cavities . 20 3.12 Access hatches . 21 3.13 Strapping . 214 Loose-fill . 22 4.1 Walls unlined . 22 4.2 Pitched roof, flat ceiling. 23 The Standard is downloaded from HYPERLINK :/ bzfx

13、w bzfxw HYPERLINK :/ Standard Sharing5 Segments and blanket products . 24 5.1 Pitched roof, flat ceiling unlined . 24 5.2 Ceilings lined . 27 5.3 Walls unlined . 30 5.4 Floors new and existing . 356 Rigid sheets . 36 6.1 Fixings . 36 6.2 Concertina edges . 36 6.3 Pipes and plumbing . 36 6.4 Electric

14、al cables . 36 6.5 Cutting rigid sheets . 36 6.6 Ceilings unlined and lined . 37 6.7 Walls unlined . 37 6.8 Underfloor new and existing . 387 Subfloor reflective insulation . 39 7.1 Floors new . 39 7.2 Floors new and existing . 398 Hot water cylinders . 439 Vapour barriers . 45 9.1 On-ground vapour

15、barriers . 4510 Pipe lagging . 47 10.1 Fitting the lagging . 47AppendixA Climate zones (Normative) . 48B Health and safety (Informative) . 49C Compensating for the effect of recessed light fittings on insulation R-value (Informative) . 62Table1 Recessed luminaire clearances from thermal insulation .

16、 17B1 Installing underfloor insulation with power on . 58B2 Installing underfloor insulation with power off . 59C1 Reduction in insulation thermal resistance due to missing insulation around recessed light fittings assuming a clearance of 100mm . 62 Figure1 Recessed light fitting . 182 Recessed ceil

17、ing space . 193 Retrofitting wall underlay . 204 Segments in unlined ceiling . 255 Blanket in ceiling secured with strapping . 266 Blanket installed in an unlined skillion roof. 267 Segments installed in lined roof . 288 Blanket laid across joists/truss chords . 289 Blanket torn over the ceiling joi

18、st 300mm back from the top plate . 3010 Example of tucking in showing undesirable compression of insulation at edges . 3111 Segments correctly installed in new wall installation . 3112 Tearing blanket to fit . 3313 Stapling blanket . 3314 Completed blanket installation in framed walls . 3415 Install

19、ing underfloor blanket . 3516 Ensuring correct drape of foil using temporary gauge . 3917 Foil under existing floor (showing strapping) . 4018 Correct placement of staples through strapping . 4019 Foil capping on pipe . 4120 Example of use of identifying labels for cables . 4221 Foil installed under

20、floor with adjacent ventilated cavity. 4222 Insulated hot water cylinder . 4423 Installing an on-ground vapour barrier . 46A1 New Zealand climate zones . 48B1 Risk factors for electrocution . 56B2 When not to install underfloor foil insulation . 57B3 Underfloor foil installation applying the 50mm ru

21、le . 58The Standard is downloaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard SharingReferenced DocumentsReference is made in this document to the following:NEW ZEALAND STANDARDSNZS 3604:1999Timber framed buildingsNZS 4214:2006Methods of determining the total thermal resistance of parts of b

22、uildingsNZS 4218:2004Energy efficiency Small building envelopeNZS 4243:1996Energy efficiency Large buildingsNZS 4305:1996Energy efficiency Domestic type hot water systemsSNZ PAS 4244:2003Insulation of lightweight-framed and solid timber housesJOINT AUSTRALIAN/NEW ZEALAND STANDARDSAS/NZS 4859.1:2002

23、Materials for the thermal insulation of buildings. Part 1 General criteria and technical provisionsAS/NZS 3000:2000Electrical installations (Australian/New Zealand wiring rules)Other PublicationsBRANZ House Insulation Guide Edition 1995How to choose the most efficient windows for your home: Window E

24、fficiency Rating Scheme(WERS)(published by WANZ).NZECP 54:2001 NZ Electrical Code of PracticeNew Zealand LegislationBuilding Act 2004Health and Safety in Employment Act 1992New Zealand Building Code 1992Latest RevisionsThe users of this Standard should ensure that their copies of the above-mentioned

25、 New Zealand Standards are the latest revisions. Amendments to referenced New Zealand and Joint Australian/New Zealand Standards can be found on HYPERLINK :/ standards.co.nz standards.co.nz.ForewordThis Standard is intended to provide clear and sound guidance to installers of insulation to ensure th

26、at the design thermal performance and thermal durability of the building element is achieved.New Zealand has become very aware of the importance of healthy homes and conservation of energy as part of the move to sustainable building. Insulation correctly installed plays a large part in ensuring effi

27、cient use of energy and a healthy internal environment in New Zealand buildings.If insulation is installed incorrectly, e.g. with gaps, tucking in, or folds, is compressed, bent or becomes wet, the thermal resistance and the durability of insulation will be reduced.Installing insulation in buildings

28、 is one way of achieving compliance with the New Zealand Building Code (NZBC) Clause H1 Energy Efficiency. This Standard details installation methods which, if followed, will ensure that the design thermal performance and thermal durability of the building insulation element is achieved. Although va

29、pour barriers are not, in themselves, methods of insulation, they have been included as a means of protecting and enhancing the performance of insulation materials.ReviewSuggestions for improvement of this Standard will be welcomed. They should be sent to the Chief Executive, Standards New Zealand,

30、Private Bag 2439, Wellington 6040.The Standard is downloaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard SharingNOTESNEW ZEALAND STANDARDEnergy efficiency Installing insulation in residential buildings1Introduction1.1ObjectiveNZS 4246 provides guidance to insulation installers in order to he

31、lp achieve the design thermal performance and thermal durability of building elements, as well as minimising the risk to installers.1.2Scope1.2.1 InclusionsThe Standard covers methods of installing common insulation materials in common residential construction types, and information on the safe inst

32、allation of insulating materials is appended.Loose-fill materials are included, but only to the extent of generic guidelines. On-ground vapour barriers have been included although they are not, in themselves, insulation products, because keeping ground moisture out helps to keep indoor air dryer, re

33、ducing condensation and improving the quality of the living environment.The detail in the Standard is based on residential-type construction, but the methods may be appropriate to other constructions.The Standard covers both the installing of insulation in new buildings during construction and the r

34、etrofitting of insulation in existing buildings.1.2.2 ExclusionsThis Standard excludes:(a) The thermal resistance provided by any particular building material or part of a building, or requirements for thermal resistance in any buildings. Information on thermal resistance may be found in NZS 4214, N

35、ZS 4218, NZS4243, NZS 4305 and the BRANZ House Insulation Guide;(b) Installing of insulation in buildings with specific design, including freezers or cool stores;(c) Installing insulation in buildings where insulation is part of the cladding material, e.g.exterior insulation and finish systems (EIFS

36、);(d) Installing insulation for purposes other than for thermal benefit, e.g. acoustic;(e) The placement or installation of vapour barriers where these may be required in building elements around areas such as spa pools, swimming pools or mountain lodges;(f)External applications;The Standard is down

37、loaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard Sharing(g) Pre-assembled insulating systems;(h) Double-glazing (for further information on glazing and R-values, see NZS 4218 and the WERS guide);(i)Expanding in situ foams, as detailed specific installation instructions are required for eac

38、h individual product; and(j)Radiant barriers in walls and ceilings.1. Compliance1.3.1 GeneralInstalling insulation in buildings is one way of achieving compliance with Clause H1 EnergyEfficiency of the New Zealand Building Code (NZBC).The current NZBC clauses that are relevant for thermal insulation

39、 are outlined below.1.3.2 Energy efficiencyNZBC Clause H1 Energy Efficiency sets an energy performance level for housing. An acceptable solution for housing and other small buildings is provided in NZS 4218. For buildings other than housing a specific energy performance is not defined but compliance

40、 can be achieved through NZS 4243. These Standards in their prescriptive tables give minimum building element thermal resistance (R-values). Achieving these R-values is highly dependent on the quality of the installation.1.3.2.1 Selecting levels of insulationAs detailed in NZS 4218 and NZS 4243, New

41、 Zealand is divided into 3 climate zones:(a) Zone 1 comprises the Coromandel District, Franklin District and all districts north of these;(b) Zone 2 comprises the remainder of the North Island excluding Taupo District, RuapehuDistrict, and the northern part of the Rangiteki District;(c) Zone 3 compr

42、ises the remainder of the country, i.e. Taupo District, Ruapehu District, northern part of the Rangiteki District, South Island and all other islands not in Zone 1.SNZ PAS 4244 specifies three levels of thermal insulation for each of the climate zones:(d) Code compliant thermal insulation values fro

43、m NZS 4218 to achieve the minimum level of energy efficiency required by the New Zealand Building Code (H1);(e) Better practice higher insulation levels;(f)Best practice even higher insulation levels.See Appendix A for a New Zealand climate zone map.1.3.3 Prevention of fungal growthThe acceptable so

44、lution to NZBC Clause E3 Internal Moisture requires the insulation of exterior walls and ceilings of habitable spaces, and the exterior walls and ceilings of wet area rooms of housing. This is to ensure internal surface temperatures can be maintained at levels that reduce the likelihood of condensat

45、ion and consequent fungal growth on building elements. Achieving the R-values specified is highly dependent on the quality of the installation.1.3.4 Durability of insulationIn the context of this Standard insulation products are required to not only be structurally durable but also to maintain their

46、 claimed thermal performance for the service life of the material. NZBC Clause B2 Durability requires that building materials continue to provide compliance with the other clauses of the NZBC for varying prescribed lengths of time depending on their function, accessibility, ease of replacement and d

47、etection of failure.Failure of insulation thermal resistance on site is difficult to measure. Thus, regardless of its ease of access and replacement, thermal insulation is required to have a durability of not less than 50 years. Refer to table 1 of NZBC Clause B2.For example: loose-fill materials wi

48、ll almost always experience some settling after installation and therefore the material must be installed in such a way that the claimed thermal performance will still be achieved at the point when it is expected to be serviced. In practice this would require the material to have an initial thermal

49、performance above the claimed value to allow for the inevitable settling.NOTE The ingress of moisture, settlement, air movement, and slight movement of materials encasing the insulation are some of the causes of deterioration of insulation materials or their installation.1.4InterpretationFor the pur

50、poses of this Standard the word shall refers to practices that are mandatory for compliance with this Standard. The word should refers to practices which are advised or recommended.The terms Normative and Informative are used in this Standard to define the application of the Appendix to which they a

51、pply. A Normative Appendix is an integral part of a Standard. An Informative Appendix is only for information and guidance and does not form part of the mandatory requirements of the Standard.1. NotesClauses prefixed by NOTE are intended as comments on the corresponding mandatory clauses. They are n

52、ot to be taken as the only or complete interpretation of the corresponding clause nor should they be used for determining in any way the mandatory requirements of compliance within this Standard.1.6Referenced documentsThe full titles of reference documents cited in this Standard are given in the lis

53、t ofReferenced Documents immediately preceding the foreword.The Standard is downloaded from HYPERLINK :/ bzfxw bzfxw HYPERLINK :/ Standard Sharing1. DefinitionsATTIC ROOF. Roof constructed with a space between the rafters and ceiling joists/trusschords where the ceiling and the roof are not parallel

54、.BLANKET. Non-rigid insulation material provided in a roll. The roll may be available in varying widths, lengths and thickness.HOT WATER CYLINDER WRAPS. Comprised of a blanket insulation material with acotton or foil exterior.LOOSE-FILL. Insulation that is in the form of small particles or fibres th

55、at are blown intoplace.MATERIAL THERMAL RESISTANCE (Rm). The thermal resistance between faces of aslab of given thickness of a uniform homogeneous material.MINERAL WOOL. Mineral wool can be made from inorganic oxides or minerals, rock slag or glass. The most commonly used mineral wool insulations ar

56、e glass wool and rock wool.R-VALUES. The value of thermal resistance of a building element (e.g. wall, floor or roof) which is the sum of the surface resistances on each side of a building element and the thermal resistances of each component of the building element including any cavities in the ele

57、ment. It is determined by calculation or by measuring the temperature difference between the internal air on one side and the external air on the other side of a building component, when there is unit heat flow in unit time through unit area using internal and external conditions considered as typic

58、al for buildings (m2 C/W).RECESSED LUMINAIRE/RECESSED LIGHT FITTING. A light fitting intended by the manufacturer to be fully or partly recessed into a mounting surface such as a floor, wall or ceiling.RIGID SHEET INSULATION. Insulation in the form of a rigid board that cannot be folded or bent but

59、must be cut to fit into place. These are usually of rigid cellular plastic.SEGMENTS. Also known as pieces or pre-formed shapes. Non-rigid insulation material pre-cut to small standard units. The pre-formed shape may be available in varying sizes and thickness.SKILLION ROOF. A pitched roof where the ceiling lining is parallel and close to the roof cladding. The roof may consist of more than one roof plane. The rafters may or may not be exposed below the ceiling.SOLID WALL CONSTRUCTION. A wall constructed of concrete, concrete block, masonryor earth bricks or rammed earth.THERMAL RESISTANC