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EN ISO 10077-1:2017

Current
Current

The latest, up-to-date edition.

Thermal performance of windows, doors and shutters - Calculation of thermal transmittance - Part 1: General (ISO 10077-1:2017, Corrected version 2020-02)
Published date

19-07-2017

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and subscripts
5 Description of the method
6 Calculation of thermal transmittance
7 Test report
Annex A (normative) - Input and method selection data
        sheet - Template
Annex B (informative) - Input and method selection data
        sheet - Default choices
Annex C (normative) - Regional references in line with
        ISO Global Relevance Policy
Annex D (normative) - Internal and external surface
        thermal resistances
Annex E (normative) - Thermal resistance of air spaces
        between glazing and thermal transmittance of coupled,
        double or triple glazing
Annex F (normative) - Thermal transmittance of frames
Annex G (normative) - Linear thermal transmittance of
        frame/glazing junction and glazing bars
Annex H (normative) - Thermal transmittance of windows
Bibliography

ISO 10077-1:2017 specifies methods for the calculation of the thermal transmittance of windows and pedestrian doors consisting of glazed and/or opaque panels fitted in a frame, with and without shutters.

Committee
CEN/TC 89
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

PREN ISO 13791 : DRAFT 2010 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - GENERAL CRITERIA AND VALIDATION PROCEDURES
14/30302455 DC : 0 BS EN 13659 - SHUTTERS AND EXTERNAL VENETIAN BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
15/30325699 DC : 0 BS EN ISO 52000-1 - ENERGY PERFORMANCE OF BUILDINGS - OVERARCHING EPB ASSESSMENT - PART 1: GENERAL FRAMEWORK AND PROCEDURES
I.S. EN ISO 13792:2012 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - SIMPLIFIED METHODS (ISO 13792:2012)
DIN EN 12428:2013-04 Industrial, commercial and garage doors - Thermal transmittance - Requirements for the calculation
10/30236365 DC : 0 BS EN 12428 - INDUSTRIAL, COMMERCIAL AND GARAGE DOORS AND GATES - THERMAL TRANSMITTANCE - REQUIREMENTS FOR CLASSIFICATION
DIN EN 16855-1 E : 2017 WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
10/30202116 DC : 0 BS EN ISO 13791 - THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - GENERAL CRITERIA AND VALIDATION PROCEDURES
I.S. EN 12831:2003 HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD
I.S. EN ISO 13791:2012 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - GENERAL CRITERIA AND VALIDATION PROCEDURES (ISO 13791:2012)
99/104649 DC : DRAFT MAY 1999 EN ISO 13790 - THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF ENERGY USE FOR HEATING
PREN 16855 : DRAFT 2015 WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
PD CEN/TR 12831-2:2017 Energy performance of buildings. Method for calculation of the design heat load Explanation and justification of EN 12831-1, Module M3-3
BS EN 13120 : 2009 INTERNAL BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
DIN EN 13561:2015-08 EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
BS EN 673:2011 Glass in building. Determination of thermal transmittance (U value). Calculation method
BS EN 12831:2003 Heating systems in buildings. Method for calculation of the design heat load
DIN EN 15603:2008-07 ENERGY PERFORMANCE OF BUILDINGS - OVERALL ENERGY USE AND DEFINITION OF ENERGY RATINGS
DIN EN 13947:2007-03 THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
EN 12831 : 2003 HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD
EN 13561:2015/AC:2016 EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
EN 12831-1:2017 Energy performance of buildings - Method for calculation of the design heat load - Part 1: Space heating load, Module M3-3
DIN EN 12831-1:2017-09 ENERGY PERFORMANCE OF BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD - PART 1: SPACE HEATING LOAD, MODULE M3-3
11/30241848 DC : 0 BS EN 13561 - EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
I.S. EN 15255:2007 ENERGY PERFORMANCE OF BUILDINGS - SENSIBLE ROOM COOLING LOAD CALCULATION - GENERAL CRITERIA AND VALIDATION PROCEDURES
14/30302452 DC : 0 BS EN 13561 - EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
DIN EN 12831-1 E : 2017 ENERGY PERFORMANCE OF BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD - PART 1: SPACE HEATING LOAD, MODULE M3-3
PREN 14351-2 : DRAFT 2014 WINDOWS AND DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PART 2: INTERNAL PEDESTRIAN DOORSETS WITHOUT RESISTANCE TO FIRE AND /OR SMOKE LEAKAGE CHARACTERISTICS
CEN/TR 12831-2:2017 Energy performance of buildings - Method for calculation of the design heat load - Part 2: Explanation and justification of EN 12831-1, Module M3-3
09/30196724 DC : 0 BS ISO 18292 - ENERGY PERFORMANCE OF FENESTRATION SYSTEMS - CALCULATION PROCEDURE
S.R. CEN/TR 12831-2:2017 ENERGY PERFORMANCE OF BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD - PART 2: EXPLANATION AND JUSTIFICATION OF EN 12831-1, MODULE M3-3
14/30297827 DC : 0 BS EN 14351-2 - WINDOWS AND DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PART 2: INTERNAL PEDESTRIAN DOORSETS WITHOUT RESISTANCE TO FIRE AND /OR SMOKE LEAKAGE CHARACTERISTICS
I.S. EN 12831-1:2017 ENERGY PERFORMANCE OF BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD - PART 1: SPACE HEATING LOAD, MODULE M3-3
UNI EN 15603 : 2008 ENERGY PERFORMANCE OF BUILDINGS - OVERALL ENERGY USE AND DEFINITION OF ENERGY RATINGS
PREN 13659 : DRAFT 2014 SHUTTERS AND EXTERNAL VENETIAN BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
BS EN 16361 : 2013 POWER OPERATED PEDESTRIAN DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PEDESTRIAN DOORSETS, OTHER THAN SWING TYPE, INITIALLY DESIGNED FOR INSTALLATION WITH POWER OPERATION
I.S. EN 16361:2013 POWER OPERATED PEDESTRIAN DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PEDESTRIAN DOORSETS, OTHER THAN SWING TYPE, INITIALLY DESIGNED FOR INSTALLATION WITH POWER OPERATION
DIN EN 15255 E : 2007 ENERGY PERFORMANCE OF BUILDINGS - SENSIBLE ROOM COOLING LOAD CALCULATION - GENERAL CRITERIA AND VALIDATION PROCEDURES
DIN EN 15255:2007-11 ENERGY PERFORMANCE OF BUILDINGS - SENSIBLE ROOM COOLING LOAD CALCULATION - GENERAL CRITERIA AND VALIDATION PROCEDURES
BS EN ISO 13792:2012 Thermal performance of buildings. Calculation of internal temperatures of a room in summer without mechanical cooling. Simplified methods
BS EN 675:2011 Glass in building. Determination of thermal transmittance (U value). Heat flow meter method
I.S. EN 14351-1:2006 WINDOWS AND DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PART 1: WINDOWS AND EXTERNAL PEDESTRIAN DOORSETS WITHOUT RESISTANCE TO FIRE AND/OR SMOKE LEAKAGE CHARACTERISTICS
I.S. EN 12428:2013 INDUSTRIAL, COMMERCIAL AND GARAGE DOORS - THERMAL TRANSMITTANCE - REQUIREMENTS FOR THE CALCULATION
I.S. EN 13659:2015 SHUTTERS AND EXTERNAL VENETIAN BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
I.S. EN 673:2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - CALCULATION METHOD
I.S. EN 675:2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - HEAT FLOW METER METHOD
I.S. EN 674:2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - GUARDED HOT PLATE METHOD
I.S. EN 13120:2009 INTERNAL BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
I.S. EN 13561:2015 EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
DIN EN 16855-1:2017-05 WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
UNE-EN 13947:2011 Thermal performance of curtain walling - Calculation of thermal transmittance
15/30320130 DC : 0 BS EN 16855 - WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
11/30253413 DC : 0 BS EN 16361 - POWER OPERATED PEDESTRIAN DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PEDESTRIAN DOOR SETS, OTHER THAN SWING TYPE, INITIALLY DESIGNED FOR INSTALLATION WITH POWER OPERATION WITHOUT RESISTANCE TO FIRE AND SMOKE LEAKAGE CHARACTERISTICS
BS EN 12831-1:2017 Energy performance of buildings. Method for calculation of the design heat load Space heating load, Module M3-3
PREN 12428 : DRAFT 2010 INDUSTRIAL, COMMERCIAL AND GARAGE DOORS AND GATES - THERMAL TRANSMITTANCE - REQUIREMENTS FOR CLASSIFICATION
00/106948 DC : DRAFT OCT 2000 PREN 13947 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
BS EN 15603:2008 Energy performance of buildings. Overall energy use and definition of energy ratings
CEN/TR 15615:2008 Explanation of the general relationship between various European standards and the Energy Performance of Buildings Directive (EPBD) - Umbrella Document
PREN ISO 13792 : DRAFT 2010 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - SIMPLIFIED METHODS
I.S. EN 16855-1:2017 WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
DIN EN 13120:2014-09 INTERNAL BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
DIN EN 673:2011-04 Glass in building - Determination of thermal transmittance (U value) - Calculation method
DIN EN 675:2011-09 Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
UNI EN 675 : 2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - HEAT FLOW METER METHOD
UNI EN 13120 : 2014 INTERNAL BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
UNI EN ISO 13792 : 2012 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - SIMPLIFIED METHODS
UNI EN 673 : 2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - CALCULATION METHOD
UNI EN 12831 : 2006 HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD
UNI EN 674 : 2011 GLASS IN BUILDING - DETERMINATION OF THERMAL TRANSMITTANCE (U VALUE) - GUARDED HOT PLATE METHOD
DIN EN 674:2011-09 Glass in building - Determination of thermal transmittance (U value) - Guarded hot plate method
14/30309932 DC : 0 BS EN 12831-1 - HEATING SYSTEMS AND WATER BASED COOLING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF THE DESIGN HEAT LOAD - PART 1: SPACE HEATING LOAD
06/30149044 DC : DRAFT APR 2006 EN 13947 - THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
11/30241851 DC : 0 BS EN 13659 - SHUTTERS AND EXTERNAL VENETIAN BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
DIN EN 15603 E : 2008 ENERGY PERFORMANCE OF BUILDINGS - OVERALL ENERGY USE AND DEFINITION OF ENERGY RATINGS
12/30237838 DC : 0 BS ISO 16343 - ENERGY PERFORMANCE OF BUILDINGS - METHODS FOR EXPRESSING ENERGY PERFORMANCE AND FOR ENERGY CERTIFICATION OF BUILDINGS
UNE-EN ISO 13791:2013 Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - General criteria and validation procedures (ISO 13791:2012)
PREN 13031-1 : DRAFT 2017 GREENHOUSES - DESIGN AND CONSTRUCTION - PART 1: COMMERCIAL PRODUCTION GREENHOUSES
UNE-EN 13659:2016 Shutters and external venetian blinds - Performance requirements including safety
BS EN 13947:2006 Thermal performance of curtain walling. Calculation of thermal transmittance
BS EN 674:2011 Glass in building. Determination of thermal transmittance (U value). Guarded hot plate method
BS EN 14351-1 : 2006 WINDOWS AND DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PART 1: WINDOWS AND EXTERNAL PEDESTRIAN DOORSETS
BS EN 13561:2015 External blinds and awnings. Performance requirements including safety
BS EN 15255:2007 Energy performance of buildings. Sensible room cooling load calculation. General criteria and validation procedures
EN 13947:2006 Thermal performance of curtain walling - Calculation of thermal transmittance
EN ISO 13792:2012 Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - Simplified methods (ISO 13792:2012)
EN ISO 13791:2012 Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - General criteria and validation procedures (ISO 13791:2012)
EN 14351-1:2006+A2:2016 Windows and doors - Product standard, performance characteristics - Part 1: Windows and external pedestrian doorsets
EN 13659:2015 Shutters and external venetian blinds - Performance requirements including safety
EN 15603:2008 Energy performance of buildings - Overall energy use and definition of energy ratings
EN 16855-1:2017 Walk-in cold rooms - Definition, thermal insulation performance and test methods - Part 1: Prefabricated cold room kits
EN 674:2011 Glass in building - Determination of thermal transmittance (U value) - Guarded hot plate method
EN 16361:2013+A1:2016 Power operated pedestrian doors - Product standard, performance characteristics - Pedestrian doorsets, other than swing type, initially designed for installation with power operation
EN 15255:2007 Energy performance of buildings - Sensible room cooling load calculation - General criteria and validation procedures
EN 675:2011 Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
12/30237844 DC : 0 BS ISO 16346 - ENERGY PERFORMANCE OF BUILDINGS - ASSESSMENT OF OVERALL ENERGY PERFORMANCE
I.S. EN 13947:2006 THERMAL PERFORMANCE OF CURTAIN WALLING - CALCULATION OF THERMAL TRANSMITTANCE
17/30354084 DC : 0 BS EN 16855-2 - WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 2: CUSTOMIZED COLD ROOMS
UNE-EN ISO 13792:2013 Thermal performance of buildings - Calculation of internal temperatures of a room in summer without mechanical cooling - Simplified methods (ISO 13792:2012)
PD CEN/TR 15615:2008 Explanation of the general relationship between various CEN standards and the Energy Performance of Buildings Directive (EPBD). Umbrella document
BS EN 16855-1:2017 Walk-in cold rooms. Definition, thermal insulation performance and test methods Prefabricated cold room kits
DIN EN 16855-1:2015-06 (Draft) WALK-IN COLD ROOMS - DEFINITION, THERMAL INSULATION PERFORMANCE AND TEST METHODS - PART 1: PREFABRICATED COLD ROOM KITS
10/30202119 DC : 0 BS EN ISO 13792 - THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - SIMPLIFIED METHODS
PREN 13561 : DRAFT 2014 EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
UNI EN 16361 : 2013 POWER OPERATED PEDESTRIAN DOORS - PRODUCT STANDARD, PERFORMANCE CHARACTERISTICS - PEDESTRIAN DOORSETS, OTHER THAN SWING TYPE, INITIALLY DESIGNED FOR INSTALLATION WITH POWER OPERATION WITHOUT RESISTANCE TO FIRE AND SMOKE LEAKAGE CHARACTERISTICS
17/30354665 DC : 0 BS EN 13031-1 - GREENHOUSES - DESIGN AND CONSTRUCTION - PART 1: COMMERCIAL PRODUCTION GREENHOUSES
I.S. EN 15603:2008 ENERGY PERFORMANCE OF BUILDINGS - OVERALL ENERGY USE AND DEFINITION OF ENERGY RATINGS
BS EN 13120:2009+A1:2014 Internal blinds. Performance requirements including safety
DIN EN 13659:2015-07 SHUTTERS AND EXTERNAL VENETIAN BLINDS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
BS EN 12428:2013 Industrial, commercial and garage doors. Thermal transmittance. Requirements for the calculation
BS EN 13659:2015 Shutters and external venetian blinds. Performance requirements including safety
ISO 13792:2012 Thermal performance of buildings Calculation of internal temperatures of a room in summer without mechanical cooling Simplified methods
UNE-EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
BS EN 13125:2001 Shutters and blinds. Additional thermal resistance. Allocation of a class of air permeability to a product
EN 12428:2013 Industrial, commercial and garage doors - Thermal transmittance - Requirements for the calculation
DIN EN ISO 13791:2012-08 THERMAL PERFORMANCE OF BUILDINGS - CALCULATION OF INTERNAL TEMPERATURES OF A ROOM IN SUMMER WITHOUT MECHANICAL COOLING - GENERAL CRITERIA AND VALIDATION PROCEDURES (ISO 13791:2012)
EN 13125:2001 Shutters and blinds - Additional thermal resistance - Allocation of a class of air permeability to a product
UNE-EN 16361:2014 Power operated pedestrian doors - Product standard, performance characteristics - Pedestrian doorsets, other than swing type, initially designed for installation with power operation without resistance to fire and smoke leakage characteristics
UNE-EN 14351-1:2006 Windows and doors - Product standard, performance characteristics - Part 1: Windows and external pedestrian doorsets without resistance to fire and/or smoke leakage characteristics

EN 12667:2001 Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance
CEN/TS 16629:2014 Energy Performance of Buildings - Detailed Technical Rules for the set of EPB-standards
ISO 10211:2017 Thermal bridges in building construction — Heat flows and surface temperatures — Detailed calculations
ISO 10293:1997 Glass in building — Determination of steady-state U values (thermal transmittance) of multiple glazing — Heat flow meter method
EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
CEN/TS 16628:2014 Energy Performance of Buildings - Basic Principles for the set of EPB standards
ISO 52000-1:2017 Energy performance of buildings — Overarching EPB assessment — Part 1: General framework and procedures
ISO 10077-2:2017 Thermal performance of windows, doors and shutters — Calculation of thermal transmittance — Part 2: Numerical method for frames
EN 13659:2015 Shutters and external venetian blinds - Performance requirements including safety
ISO 10291:1994 Glass in building — Determination of steady-state U values (thermal transmittance) of multiple glazing — Guarded hot plate method
ISO 8302:1991 Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus
ISO 8301:1991 Thermal insulation Determination of steady-state thermal resistance and related properties Heat flow meter apparatus
EN 13561:2015/AC:2016 EXTERNAL BLINDS AND AWNINGS - PERFORMANCE REQUIREMENTS INCLUDING SAFETY
ISO 12567-2:2005 Thermal performance of windows and doors Determination of thermal transmittance by hot box method Part 2: Roof windows and other projecting windows
EN 12412-2:2003 Thermal performance of windows, doors and shutters - Determination of thermal transmittance by hot box method - Part 2: Frames
EN 13125:2001 Shutters and blinds - Additional thermal resistance - Allocation of a class of air permeability to a product
EN 674:2011 Glass in building - Determination of thermal transmittance (U value) - Guarded hot plate method
EN 12664:2001 Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Dry and moist products of medium and low thermal resistance
ISO 10456:2007 Building materials and products — Hygrothermal properties — Tabulated design values and procedures for determining declared and design thermal values
EN 675:2011 Glass in building - Determination of thermal transmittance (U value) - Heat flow meter method
ISO/TR 52000-2:2017 Energy performance of buildings Overarching EPB assessment Part 2: Explanation and justification of ISO 52000-1
ISO 6946:2017 Building components and building elements — Thermal resistance and thermal transmittance — Calculation methods
ISO/TR 52022-2:2017 Energy performance of buildings Thermal, solar and daylight properties of building components and elements Part 2: Explanation and justification
ISO 7345:1987 Thermal insulation Physical quantities and definitions
ISO 10292:1994 Glass in building — Calculation of steady-state U values (thermal transmittance) of multiple glazing

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