EN 14501:2021/prA1

Blinds and shutters - Thermal and visual comfort - Performance characteristics and classification

This document applies to the whole range of shutters, awnings and blinds defined in EN 12216, described as solar protection devices in this document.
It specifies the corresponding properties and classifications:
-   relating to thermal comfort:
-   the solar factor (total solar energy transmittance);
-   the secondary heat transfer factor;
-   the direct solar transmittance;
-   relating to visual comfort:
-   the darkening performance;
-   the night privacy;
-   the visual contact with the outside;
-   the glare control;
-   the daylight utilization;
-   the rendering of colours.
NOTE   For other purposes, more detailed methods using different parameters can be used.
Some of the characteristics (e.g. gtot) are not applicable when solar protection devices are not parallel to the glazing (e.g. folding-arm awnings).
This document is not applicable to the solar protection devices using fluorescent materials.

Abschlüsse - Thermischer und visueller Komfort - Leistungsanforderungen und Klassifizierung

Stores et volets - Confort thermique et visuel - Caractéristiques de performance et classification

Rolete in polkna - Toplotno in vizualno ugodje - Delovne karakteristike in klasifikacija - Dopolnilo A1

General Information

• Status: Not Published
• Publication Date: 29-Oct-2025
• ICS: 91.060.50 - Doors and windows
• Technical Committee: CEN/TC 33 - Doors, windows, shutters and building hardware
• Drafting Committee: CEN/TC 33/WG 3 - Blinds and shutters
• Current Stage: 4060 - Closure of enquiry - Enquiry
• Start Date: 13-Jun-2024
• Due Date: 05-Sep-2024
• Completion Date: 13-Jun-2024
• Ref Project: SIST EN 14501:2021/oprA1:2024 - Blinds and shutters - Thermal and visual comfort - Performance characteristics and classification

Relations

• Amends: EN 14501:2021 - Blinds and shutters - Thermal and visual comfort - Performance characteristics and classification
• Effective Date: 26-Jul-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2024
Rolete in polkna - Toplotno in vizualno ugodje - Delovne karakteristike in
klasifikacija - Dopolnilo A1
Blinds and shutters - Thermal and visual comfort - Performance characteristics and
classification
Abschlüsse - Thermischer und visueller Komfort - Leistungsanforderungen und
Klassifizierung
Stores et volets - Confort thermique et visuel - Caractéristiques de performance et
classification
Ta slovenski standard je istoveten z: EN 14501:2021/prA1
ICS:
91.060.50 Vrata in okna Doors and windows
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 14501:2021
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
March 2024
ICS 91.060.50
English Version
Blinds and shutters - Thermal and visual comfort -
Performance characteristics and classification
Fermetures et stores - Confort thermique et lumineux - Abschlüsse - Thermischer und visueller Komfort -
Caractérisation des performances et classification Leistungsanforderungen und Klassifizierung
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 33.
This draft amendment A1, if approved, will modify the European Standard EN 14501:2021. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14501:2021/prA1:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modification to Annex A (normative), “Reference glazing” . 4
European foreword
This document (EN 14501:2021/prA1:2024) has been prepared by Technical Committee CEN/TC 33
“Doors, windows, shutters, building hardware and curtain walling”, the secretariat of which is held by
AFNOR.
This document is currently submitted to the CEN Enquiry.
This document amends EN 14501:2021, through the following technical modification:
— Replacement of the Annex A.
1 Modification to Annex A (normative), “Reference glazing”
Replace the current Annex A with the following:
“
Annex A
(normative)
Reference glazing
A.1 General
For global product comparisons (glazing unknown) of shutters, external and internal blinds the reference
glazing defined in A.2 and A.3 shall be used.
NOTE Considering the type of calculations for which the use of the data in this annex is intended, the corrected
emissivity values have been considered.
A.2 Reference glazing with integrated data only
A.2.1 Glazing A
Clear single glazing (4 mm).
Thermal properties and integrated solar and visual data of glazing A and of the individual pane are
presented in Tables A.1 and A.2.
Table A.1 — Glazing A — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
5,8 0,85 0,83 0,08 0,08 0,90 0,08 0,08
Table A.2 — Glazing A — Optical properties of the single glass pane
Single pane
τ 0,83
e
ρ 0,08
e
0,08
ρ’
e
ε 0,84
ε' 0,84
τ 0,90
v
ρ 0,08
v
0,08
ρ’
v
A.2.2 Glazing B
Clear double glazing (4 mm + 12 mm space + 4 mm), space filled with air.
Thermal properties and integrated solar and visual data of glazing B and of each individual pane are
presented in Tables A.3 and A.4.
Table A.3 — Glazing B — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
2,9 0,76 0,69 0,14 0,14 0,82 0,15 0,15
Table A.4 — Glazing B — Optical properties of the individual panes
Ext. pane Int. pane
τ 0,83 0,83
e
ρ 0,08 0,08
e
0,08 0,08
ρ’
e
ε 0,84 0,84
ε' 0,84 0,84
τ 0,90 0,90
v
ρ 0,08 0,08
v
0,08 0,08
ρ’
v
A.2.3 Glazing C
Double glazing (4 mm + 16 mm space + 4 mm), with low emissivity coating in position 3 (outer surface
of the inner pane), space filled with 90 % argon.
Thermal properties and integrated solar and visual data of glazing C and of each individual pane are
presented in Tables A.5 and A.6.
Table A.5 — Glazing C — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
1,2 0,59 0,49 0,29 0,27 0,80 0,15 0,10
Table A.6 — Glazing C — Optical properties of the individual panes
Ext. pane Int. pane
τ 0,83 0,58
e
ρ 0,08 0,30
e
0,08 0,24
ρ’
e
ε 0,84 0,05
ε' 0,84 0,84
τ 0,90 0,82
v
ρ 0,08 0,08
v
0,08 0,04
ρ’
v
A.2.4 Glazing D
Solar control glazing (4 mm + 16 mm space + 4 mm), with a low emissivity coating in position 2 (inner
surface of the outer pane), space filled with 90 % argon.
Thermal properties and integrated solar and visual data of glazing D and of each individual pane are
presented in Tables A.7 and A.8.
Table A.7 — Glazing D — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
1,1 0,32 0,27 0,29 0,38 0,44 0,43 0,38
Table A.8 — Glazing D — Optical properties of the individual panes
Ext. pane Int. pane
τe 0,32 0,83
ρe 0,28 0,08
0,42 0,08
ρ’
e
(coated)
ε 0,84 0,84
ε' 0,04 0,84
τ 0,47 0,90
v
ρ 0,41 0,08
v
ρ’ 0,35 0,08
v
A.2.5 Glazing E
Triple glazing (4 mm + 14 mm space + 4 mm + 14 mm space + 4 mm) with a low emissivity coating in
position 2 and 5 (inner surface of the outer pane and external surface of the inner pane), space filled with
90 % argon.
Thermal properties and integrated solar and visual data of glazing E and of each individual pane are
presented in Tables A.9 and A.10.
Table A.9 — Glazing E — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
0,8 0,55 0,50 0,22 0,23 0,73 0,16 0,16
Table A.10 — Glazing E — Optical properties of the individual panes
Ext. Pane Middle pane Int. pane
τ 0,75 0,90 0,75
e
ρ 0,12 0,08 0,14
e
0,14 0,08 0,12
ρ’
e
ε 0,84 0,84 0,08
ε' 0,08 0,84 0,84
τ 0,89 0,90 0,89
v
ρ 0,07 0,08 0,06
v
ρ’ 0,06 0,08 0,07
v
A.3 Reference glazing with spectral data
A.3.1 General
This clause specifies reference glazing for which both integrated data and spectral data of panes are
available.
Spectral data of panes are presented in A.3.5.
NOTE The wavelength intervals for which the spectral data are given impact the results of a calculation. In the
case different wavelength intervals are used for the panes and the solar protection material, ISO 19467 provides a
method to calculate the interpolation of wavelengths.
Integrated data are specified in A.3.2 to A.3.4. They were calculated on the basis of the spectral data
specified in A.3.5 using EN 410:2011 for the solar and visual properties and EN 673:2011 for the thermal
property (U-value).
A.3.2 Glazing F
Double glazing (4 mm + 16 mm space + 4 mm), with low emissivity coating in position 3 (outer surface
of the inner pane), space filled with 90% argon:
pane 1 / 16 mm space with argon / pane 2 (flipped)
Thermal properties and integrated solar and visual data of glazing F are presented in Table A.11.
Table A.11 — Glazing F — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
1,1 0,64 0,58 0,28 0,27 0,82 0,12 0,12

A.3.3 Glazing G
Solar control glazing (6 mm + 16 mm space + 4 mm), space filled with 90 % argon:
pane 3 / 16 mm space with argon / pane 1
Thermal properties and integrated solar and visual data of glazing G are presented in Table A.12.
Table A.12 — Glazing G — Thermal properties and integrated solar and visual data
U g τ ρ ρ’ τ ρ ρ’
e e e v v v
W/(m K)
1,0 0,33 0,31 0,37 0,45 0,70 0,11 0
...