prEN 18189
(Main)Rooflights and roof hatches - Environmental Product Declarations - Complementary product category rules (cPCR) to EN 15804
Rooflights and roof hatches - Environmental Product Declarations - Complementary product category rules (cPCR) to EN 15804
This document provides product category rules (PCR) for Type III environmental declarations for rooflights and roof hatches to be used on upstands in flat and slightly inclined roofs.
This document complements the core rules for the product category of construction products as defined in [1]. This document is used in conjunction with [1] and does not replace it.
The core PCR:
— defines the parameters to be declared and the way in which they are collected and reported;
— describes which stages of a product’s life cycle are considered in the EPD and which processes; are to be included in the life cycle stages;
— defines rules for the development of scenarios;
— includes the rules for calculating the Life Cycle Inventory and the Life Cycle Impact Assessment underlying the EPD; including the specification of the data quality to be applied;
— includes the rules for reporting the predetermined, environmental and health information that is not covered by Life Cycle Assessment (LCA) for the product, construction process(es) and construction service(s), as relevant;
— defines the conditions under which construction products can be compared based on the information provided by EPD.
For the EPD of construction services the same rules and requirements apply as for the EPD of construction products.
This document applies to rooflights and roof hatches with upstands as well as rooflights and roof hatches supplied without an upstand, intended for use on upstands. The rooflights and roof hatches may be individual or continuous types.
The main purpose of rooflights is to transmit daylight into the building. Roof hatches provide mainly access to the roof. But beside their primary purposes these products can be used for different additional functions e.g.
— natural ventilation;
— fire compartmentation and smoke control;
— emergency exit;
— natural smoke and heat exhaust ventilation in accordance with [2].
So the functions and the products are not fixed linked to each other.
Construction products covered by these complementary product category rules are:
— individual rooflights and individual rooflights with upstands;
— roof hatches;
— continuous rooflights and continuous rooflights with upstands.
Dachoberlichter und Dachluken - Umweltproduktdeklarationen - Ergänzende Produktkategorieregeln zur EN 15804
Dieses Dokument liefert allgemeine Produktkategorieregeln (PCR) für Typ III-Umweltdeklarationen für Lichtkuppeln und Dachluken für den Einbau auf Aufsetzkränzen in flache und leicht geneigte Dächer.
Dieses Dokument ergänzt die Grundregeln für die Produktkategorie Bauprodukte, wie in [1] festgelegt. Dieses Dokument wird in Verbindung mit [1] angewendet und ersetzt diese Norm nicht.
Die grundlegenden Produktkategorieregeln:
definieren die auszuweisenden Parameter und die Art, wie sie zusammengestellt und dokumentiert werden;
beschreiben, welche Phasen des Lebenszyklus eines Produkts in der Umweltproduktdeklaration (EPD, en: environmental product declaration) berücksichtigt werden und welche Verfahren in die Lebenszyklusphasen einzubeziehen sind;
definieren die Regeln für die Entwicklung von Szenarien;
umfassen die Regeln zur Berechnung der Sachbilanz (LCI, en: life cycle inventory) und der Wirkungs-abschätzung, die der EPD zugrunde liegen, einschließlich der Festlegung der einzuhaltenden Datenqualität;
umfassen die Regeln für die Protokollierung der im Vorfeld bestimmten Angaben zu Umwelt- und Gesundheitsschutz, die für das Bauprodukt, die Bau-/Einbauverfahren und die Bauleistung(en) nicht von einer Ökobilanz (LCA, en: life cycle assessment) abgedeckt sind, soweit maßgeblich;
definieren die Bedingungen, unter denen Bauprodukte auf der Grundlage der Angaben in den EPD verglichen werden können.
Für die EPD von Bauleistungen gelten dieselben Regeln und Anforderungen wie für die EPD von Bauprodukten.
Dieses Dokument gilt sowohl für Lichtkuppeln und Dachluken mit Aufsetzkränzen als auch für Lichtkuppeln und Dachluken ohne Aufsetzkränze, die zur Montage auf Aufsetzkränzen vorgesehen sind. Es kann sich um einzelne Lichtkuppeln und Dachluken oder um Lichtbänder handeln.
Der Hauptzweck von Lichtkuppeln besteht in der natürlichen Belichtung eines Gebäudes. Dachluken dienen hauptsächlich als Ausstieg zum Dach. Neben ihrer primären Bestimmung können diese Produkte verschiedene weitere Funktionen erfüllen, z. B.
natürliche Belüftung;
Schaffung von Brandabschnitten und Rauchschutz;
Notausausstieg;
natürlicher Rauch- und Wärmeabzug nach [2].
Daher sind die Funktionen und Produkte nicht fest miteinander verbunden.
Die folgenden Bauprodukte fallen unter diese ergänzenden Produktkategorieregeln:
Lichtkuppeln und Lichtkuppeln mit Aufsetzkranz;
Dachluken;
Lichtbänder und Lichtbänder mit Aufsetzkranz.
Lanterneaux et trappes de toit - Déclarations environnementales sur les produits - Règles complémentaires régissant les catégories de produits (RCP-c) à l'EN 15804
Le présent document fournit des règles de catégories de produits (RCP) pour les déclarations environnementales de Type III relatives aux lanterneaux et aux trappes de toit à utiliser sur des costières de toitures à faibles pentes et légèrement inclinées.
Le présent document complète les règles régissant les catégories de produits de construction telles que définies dans [1]. Le présent document est utilisé conjointement avec [1] et ne le remplace pas.
Les RCP de base :
— définissent les paramètres à déclarer et la manière dont ils sont collectés et consignés ;
— décrivent les étapes du cycle de vie d'un produit prises en compte dans la DEP ainsi que les processus devant être inclus dans les étapes du cycle de vie ;
— définissent les règles relatives à l'élaboration de scénarios ;
— intègrent les règles de calcul de l'inventaire du cycle de vie et de l'évaluation de l'impact du cycle de vie servant de base à la DEP, y compris la définition de la qualité des données à appliquer ;
— intègrent les règles de communication d'informations environnementales et sanitaires prédéterminées, qui ne sont pas couvertes par l'analyse du cycle de vie (ACV), pour le produit, le(s) processus de construction et le(s) service(s) de construction, le cas échéant ;
définissent les conditions dans lesquelles les produits de construction peuvent être comparés, sur la base des informations fournies par la DEP.
Les règles et les exigences applicables à la DEP des services de construction sont les mêmes que pour la DEP des produits de construction.
Le présent document s'applique aux lanterneaux et trappes de toit avec costière, ainsi qu'aux lanterneaux et trappes de toit fournis sans costière, destinés à être utilisés sur des costières. Les lanterneaux et les trappes de toit peuvent être de type ponctuel ou continu.
L'objectif principal des lanterneaux est de diffuser la lumière du jour à l'intérieur du bâtiment. Les trappes de toit permettent principalement d'accéder au toit. Outre leur fonction première, ces produits peuvent être utilisés pour différentes fonctions supplémentaires, par exemple :
— ventilation naturelle ;
— compartimentage coupe-feu et contrôle des fumées ;
— issue de secours ;
— évacuation naturelle des fumées et de la chaleur conformément à [2].
Les fonctions et les produits ne sont donc pas liés l'un à l'autre.
Les produits de construction couverts par ces règles complémentaires régissant les catégories de produits sont :
— les lanterneaux ponctuels et les lanterneaux ponctuels avec costières ;
— les trappes de toit ;
— les lanterneaux continus et les lanterneaux continus avec costières.
Strešna okna in strešne lopute - Okoljske deklaracije za proizvode - Pravila za kategorije proizvodov, ki dopolnjujejo EN 15804
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Strešna okna in strešne lopute - Okoljske deklaracije za proizvode - Pravila za
kategorije proizvodov, ki dopolnjujejo EN 15804
Rooflights and roof hatches - Environmental Product Declarations - Complementary
product category rules (cPCR) to EN 15804
Dachoberlichter und Dachluken - Umweltproduktdeklarationen - Ergänzende
Produktkategorieregeln zur EN 15804
Lanterneaux et trappes de toit - Déclarations environnementales sur les produits -
Règles complémentaires régissant les catégories de produits (RCP-c) à l'EN 15804
Ta slovenski standard je istoveten z: prEN 18189
ICS:
13.020.20 Okoljska ekonomija. Environmental economics.
Trajnostnost Sustainability
91.060.20 Strehe Roofs
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
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2025
ICS 91.060.50; 91.060.20
English Version
Rooflights and roof hatches - Environmental Product
Declarations - Complementary product category rules
(cPCR) to EN 15804
Dachoberlichter und Dachluken -
Umweltproduktdeklarationen - Ergänzende
Produktkategorieregeln zur EN 15804
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 128.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 18189:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
3.1 Complementary terms of construction product . 6
3.2 Product dimension . 8
4 Abbreviations . 9
5 General aspects . 9
5.1 Objective of this complementary PCR . 9
5.2 Life cycle stages relevant for the EPD . 9
5.3 Comparability of EPD for construction products . 10
5.4 Additional environmental information . 10
5.4.1 General . 10
5.4.2 Additional impact indicators . 10
5.4.3 Additional information on carbon offset, carbon storage and delayed emissions . 10
5.4.4 Additional Information not derived from LCA . 10
5.5 Ownership, responsibility and liability for the EPD . 10
5.6 Communication formats . 10
6 Product Category Rules for LCA . 10
6.1 Product category . 10
6.2 Life cycle stages and their information modules to be included . 10
6.2.1 General . 10
6.2.2 A1-A3, Product stage, information modules . 10
6.2.3 A4-A5, Construction process stage, information modules . 10
6.2.4 B1-B5, Use stage, information modules related to the building fabric . 11
6.2.5 B6-B7, Use stage, information modules related to the operation of the building . 11
6.2.6 C1-C4, End-of-life stage, information modules . 11
6.2.7 D, Benefits and loads beyond the system boundary, information module . 11
6.3 Calculation rules for the LCA . 11
6.3.1 Functional or declared unit . 11
6.3.2 Functional unit . 11
6.3.3 Declared unit . 11
6.3.4 Reference service life (RSL) . 12
6.3.5 System boundaries . 13
6.3.6 Criteria for the exclusion of inputs and outputs . 16
6.3.7 Selection of data . 16
6.3.8 Data quality . 17
6.3.9 Developing product level scenarios . 17
6.3.10 Units . 17
6.4 Inventory analysis . 17
6.4.1 Collecting data . 17
6.4.2 Calculation procedures . 17
6.4.3 Allocation of input flows and output emissions . 17
6.4.4 Information on biogenic carbon content . 17
6.5 Impact assessment . 17
6.5.1 General . 17
6.5.2 Core environmental impact indicators . 17
6.5.3 Additional environmental impact indicators . 17
7 Content of the EPD . 17
7.1 Declaration of general information . 17
7.2 Declaration of environmental indicators derived from LCA . 18
7.3 Scenarios and additional technical information . 18
7.3.1 General . 18
7.3.2 Construction process stage . 18
7.3.3 Use stage . 20
7.3.4 End-of-life . 25
7.4 Additional information on release of dangerous substances to indoor air, soil and
water during the use stage . 30
7.5 Aggregation of information modules . 30
8 Technical documentation . 30
8.1 General . 30
8.2 LCA-related elements of the technical documentation . 30
8.3 Documentation on additional information . 30
8.4 Data availability for verification . 30
9 Verification and validity of an EPD . 30
Annex A (informative) Guidance for defining a representative product within a product
range . 32
Bibliography . 33
European foreword
This document (prEN 18189:2025) has been prepared by Technical Committee CEN/TC 128 "Roof
covering products for discontinuous laying and products for wall cladding", the secretariat of which is
held by NBN.
This document is currently submitted to the CEN Enquiry.
1 Scope
This document provides product category rules (PCR) for Type III environmental declarations for
rooflights and roof hatches to be used on upstands in flat and slightly inclined roofs.
This document complements the core rules for the product category of construction products as defined
in [1]. This document is used in conjunction with [1] and does not replace it.
The core PCR:
— defines the parameters to be declared and the way in which they are collected and reported;
— describes which stages of a product’s life cycle are considered in the EPD and which processes; are
to be included in the life cycle stages;
— defines rules for the development of scenarios;
— includes the rules for calculating the Life Cycle Inventory and the Life Cycle Impact Assessment
underlying the EPD; including the specification of the data quality to be applied;
— includes the rules for reporting the predetermined, environmental and health information that is
not covered by Life Cycle Assessment (LCA) for the product, construction process(es) and
construction service(s), as relevant;
— defines the conditions under which construction products can be compared based on the
information provided by EPD.
For the EPD of construction services the same rules and requirements apply as for the EPD of
construction products.
This document applies to rooflights and roof hatches with upstands as well as rooflights and roof hatches
supplied without an upstand, intended for use on upstands. The rooflights and roof hatches may be
individual or continuous types.
The main purpose of rooflights is to transmit daylight into the building. Roof hatches provide mainly
access to the roof. But beside their primary purposes these products can be used for different additional
functions e.g.
— natural ventilation;
— fire compartmentation and smoke control;
— emergency exit;
— natural smoke and heat exhaust ventilation in accordance with [2].
So the functions and the products are not fixed linked to each other.
Construction products covered by these complementary product category rules are:
— individual rooflights and individual rooflights with upstands;
— roof hatches;
— continuous rooflights and continuous rooflights with upstands.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
EN 12101-2:2003, Smoke and heat control systems - Part 2: Specification for natural smoke and heat
exhaust ventilators
EN 15942:2021, Sustainability of construction works - Environmental product declarations -
Communication format business-to-business
EN 15804:2012+A2:2019, Sustainability of construction works - Environmental product declarations -
Core rules for the product category of construction products
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 15804:2012+A2:2019 and
the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Complementary terms of construction product
3.1.1
rooflight
fixed or openable light transmitting construction product intended to be installed externally on
upstands in flat and slightly inclined roofs to admit daylight and solar gains and potentially for
ventilation
Note 1 to entry: Rooflights consist of one or several light transmitting part(s) and may include some opaque infill(s),
as well as associated profiles and accessories.
Note 2 to entry: Openable rooflights and/or openable parts of rooflights may be manually and/or power operated.
Note 3 to entry: Rooflights may be individual or continuous.
Note 4 to entry: The term rooflight does not include an upstand.
3.1.1.1
rooflight with upstand
rooflight supplied with a suitable upstand
Note 1 to entry: Rooflights with upstand consist of one or several light transmitting part(s), an upstand and may
include some opaque infill(s), as well as associated profiles and accessories.
As impacted by EN 15804:2012+A2:2019/AC:2021.
3.1.2
roof hatch
openable, opaque or light transmitting construction product intended to be installed externally on
upstands in flat or slightly inclined roofs to provide access for persons, goods, and services as well as
possibly ventilation and light transmittance
Note 1 to entry: Roof hatches consist of one or more openable or removable lid(s) and may include base frames,
as well as associated profiles and accessories.
Note 2 to entry: Roof hatches may be manually and/or power operated.
Note 3 to entry: Roof hatches are usually fully factory assembled and supplied as one unit. Joining of factory-made
connections e.g. between the light transmitting part(s) and the opening frame or between the light transmitting
part(s) themselves may be done at site due to the manufacturer’s instructions.
Note 4 to entry: The size of roof hatches is limited to 2,50 m by 4,00 m base size of the upstand.
Note 5 to entry: The term Roof hatch does not include an Upstand.
3.1.2.1
roof hatch with upstand
roof hatch supplied with a suitable upstand
Note 1 to entry: Roof hatches with upstand consist of one or more openable or removable lid(s), an upstand and
may include base frames, associated profiles and accessories.
Note 2 to entry: Roof hatches with upstand are usually fully factory assembled and supplied as one unit. Joining
of factory-made connections e.g. between the lid and the upstand may be done at site due to the manufacturer’s
instructions.
3.1.3
lid
openable or removable uppermost part of a roof hatch or an openable rooflight that covers all or part
of the opening
Note 1 to entry: A lid can be formed as a single opaque component without associated profiles or it can consist of
one or more light transmitting part(s) and/or opaque infill(s) with associated profiles and accessories.
Note 2 to entry: In an equivalent manner the words flap or leaf may be used.
3.1.4
light transmitting part
light transmitting construction element made of light transmitting materials (e.g. GF-UP, PC, PMMA,
PVC, glass) which consists of at least an outside skin which ensures water run off by form or orientation
and several additional light transmitting sheets below optionally
3.1.5
hardware
connection equipment, opening and locking device and/or seal for the assembly of e.g. rooflight, roof
hatch, light transmitting part(s), upstand and profiles
3.1.6
power operating accessories
are operational components equipped to the rooflights or roof hatches for power operation of built-in
functions incorporated in the products e.g. for power operated opening and closing of openable elements
or power operated shading
3.1.7
upstand
construction component which lifts a rooflight or a roof hatch out of the roof-plane and provides area
for the fixture and the connection to the roof waterproofing layer
Note 1 to entry: Rooflights and roof hatches are always intended for installation on an upstand but may be supplied
with or without an upstand.
Note 2 to entry: The upstand transmits the loads acting upon the rooflight or roof hatch into the substructure.
Note 3 to entry: Upstands may include ventilation devices.
Note 4 to entry: The upstand is single or multi-walled or composite with vertical and/or pitched sides; with or
without thermal insulation.
3.1.7.1
base dimension of the upstand
intended dimension of the roof opening at the outer surface of the roof for which the upstand of a rooflight
with upstand or a roof hatch with upstand is designed as shown in Figure 2 for the width
Note 1 to entry: Usually the base size of the upstand corresponds to the opening dimension of the upstand at its
base.
3.1.8
clear opening dimension
dimension of the minimum opening of the upstand for rooflights or roof hatches with upstand as shown
in Figure 1 and Figure 2 for the width
Note 1 to entry: For rooflights or roof hatches without upstand the clear opening dimension correspond to the
opening dimension of the rooflight or roof hatch. It may be reduced by the on-site upstand.
Note 2 to entry: A base frame if any can reduce the clear opening dimension.
3.2 Product dimension
The definition of the general product dimension is shown in Figure 1 and Figure 2 for the width.
Key
1 rooflight or roof hatch
2 connection of the rooflight or roof hatch
3 on-site upstand and roof
b opening dimension (width) of the rooflight or roof hatch
r
b clear opening dimension (width)
cl
Figure 1 — Rooflight or roof hatch without upstand
Key
1 rooflight or roof hatch
2 upstand
3 intended on-site roof opening
b opening dimension (width) of the rooflight or roof hatch
r
b base dimension (width) of the upstand
up
b clear opening dimension (width)
cl
Figure 2 — Rooflight or roof hatch with upstand
4 Abbreviations
The abbreviations of EN 15804:2012+A2:2019 apply.
5 General aspects
5.1 Objective of this complementary PCR
This complementary product category rules provide specific guidance about the modelling approach
of [1] to be applied to the processes related to the product family of rooflights (3.1.1) and roof hatches
(3.1.2). This complementary product category rules therefore:
— give guidance about the modelling approaches to be applied to the processes related to the product
family;
— provide information for functional and declared units to ensure harmonization;
— recommend system boundaries to achieve a high degree of harmonization;
— specify harmonized scenarios for the modules transport, installation and the modules of the use
stage and the end-of-life stage as well as for Module D, benefits and loads;
— offer default data for processes, inputs, and outputs in accordance with the worst-case scenario
principle to be used only if more reliable data are not available;
— provide information for the reference service life (RSL) of the specific construction products.
5.2 Life cycle stages relevant for the EPD
EN 15804:2012+A2:2019 shall apply.
5.3 Comparability of EPD for construction products
Only the EPD type cradle to grave in accordance with EN 15804:2012+A2:2019 shall apply.
5.4 Additional environmental information
5.4.1 General
EN 15804:2012+A2:2019 shall apply.
5.4.2 Additional impact indicators
EN 15804:2012+A2:2019 shall apply.
5.4.3 Additional information on carbon offset, carbon storage and delayed emissions
EN 15804:2012+A2:2019 shall apply.
5.4.4 Additional Information not derived from LCA
EN 15804:2012+A2:2019 shall apply.
5.5 Ownership, responsibility and liability for the EPD
Comply with the rules set in the relevant harmonized product standards, following the guidance laid
out in EN 15804:2012+A2:2019.
5.6 Communication formats
For business-to-business communication format of the rules for EPD shall be in accordance with
EN 15942:2021.
6 Product Category Rules for LCA
6.1 Product category
This document is relevant for the product category “rooflights (3.1.1) and roof hatches (3.1.2)” according
to prEN xxxxx.xxxx. The uses for which the products are intended by the manufacturer, for example
daylighting, access to the roof and / or natural ventilation, shall be stated in the EPD. If not further
specified "rooflights" means both individual and continuous rooflights with or without an upstand
(3.1.7). If not further specified "roof hatches" means both with and without an upstand. LCA made for
rooflights without openable elements are valid only for non-openable rooflights that are only used for
daylighting.
6.2 Life cycle stages and their information modules to be included
6.2.1 General
EN 15804:2012+A2:2019 shall apply.
6.2.2 A1-A3, Product stage, information modules
EN 15804:2012+A2:2019 shall apply.
6.2.3 A4-A5, Construction process stage, information modules
EN 15804:2012+A2:2019 shall apply.
6.2.4 B1-B5, Use stage, information modules related to the building fabric
EN 15804:2012+A2:2019 shall apply.
6.2.5 B6-B7, Use stage, information modules related to the operation of the building
For Module B6 EN 15804:2012+A2:2019 shall apply. Module B6 is only relevant for rooflights (3.1.1)
and roof hatches (3.1.2) with operational energy use.
Rooflights and roof hatches do usually not use water for operation. Therefore, the operational water
use in accordance with module B7 is zero in these cases.
6.2.6 C1-C4, End-of-life stage, information modules
EN 15804:2012+A2:2019 shall apply.
6.2.7 D, Benefits and loads beyond the system boundary, information module
EN 15804:2012+A2:2019 shall apply.
6.3 Calculation rules for the LCA
6.3.1 Functional or declared unit
EN 15804:2012+A2:2019 shall apply.
6.3.2 Functional unit
A complete functional unit, including information on defined functions of the product within the building
or construction works over the full life cycle can only be defined on the assumption that, the future
function of the product within the building or construction works during the use stage does not change.
The functional unit is defined by the characteristics developed in accordance with the relevant
harmonized product standards and shall be defined in accordance with the declared unit as derived in
6.3.3 and with a reference service life as derived in accordance with 6.3.4.
In order to facilitate building calculation, the essential technical characteristics for the product relevant
for the use stage are declared in accordance with the relevant harmonized product standards. For
rooflights (3.1.1) and roof hatches (3.1.2) this would be e.g. their light transmittance, ventilation
capacities and characteristics used for access as well as its total solar energy transmittance, air
permeability and thermal transmittance.
Such parameters are strongly influenced by factors such as the size and orientation of the product and
the local climate. These factors are not always incorporated into the data from product standards. For
example, the declaration of performance may be based on a representative size, which may differ from
the performance of the actual size installed.
See Annex A for guidance for defining representative products within a product series.
6.3.3 Declared unit
As specified in [1] for roof elements the declared unit for rooflights (3.1.1) and roof hatches (3.1.2) shall
be 1 square metre [m²]. The configuration and the size used for calculation shall be clearly stated in
the EPD.
For rooflights with upstand (3.1.1.1) and roof hatches with upstand (3.1.2.1) the area of the base
dimension of the upstand (3.1.7.1) corresponding to the intended clear roof opening size shall be taken
into account.
For rooflights and roof hatches supplied without upstand (3.1.7) the area of the upper opening size of
the intended upstand corresponding to the clear opening size (3.1.8) of the rooflight or roof hatch shall
be taken into account.
For calculation of the LCA
— for individual rooflights and roof hatches a representative size of 1,20 m width and 1,20 m, length;
— for continuous rooflights a representative size of 1,50 m width and 8,00 m length;
— for continuous rooflights with openable elements one openable element with a representative size
of 1,20 m width and 2,00 m length, which is installed in the centre of reference the representative
continuous rooflight,
shall be used.
The representative size will apply to rooflights and roof hatches with and without upstand. For the
rooflights and roof hatches with upstand, the relevant upstand will be taken into consideration for the
EPD calculations automatically as part of the Bill of Materials.
When justified other sizes may be used for calculation of the product on request of the manufacturer e.g.:
— The products are not available on the market in the representative size, as specified above.
— The results of the LCA for the representative size specified above are not relevant for a typical
range of sizes placed on the market.
— The openable elements of continuous rooflights are only available with the whole width of the
rooflight.
If the manufacturer wants to give LCA indicator results for project specific products or sizes, the
manufacturer may report indicator results for a different size of element than listed above in order to
reflect the actual elements produced. In such a case, the exact dimensions used and a sketch of the
element shall be provided in the EPD. This size-specific EPD shall not be used as a proxy for any other
size or element.
6.3.4 Reference service life (RSL)
When key components e.g. translucent plastic sheets or insulated glass units, used within the assessed
rooflight (3.1.1) or roof hatch (3.1.2), are covered by an own harmonized product standard the reference
service life specified for these components shall be taken into account.
Typical reference service life for the following product categories are:
— For individual rooflights up to 25 years is commonly assumed for products within the scope of this
document.
— For continuous rooflights up to 20 years is commonly assumed for products within the scope of
this document.
— For roof hatches up to 20 years is commonly assumed for products within the scope of this
document.
A shorter reference service life may be specified by the manufacturers for their product due to a specific
product design or specific in-use conditions.
For reference service life above 20 or 25 years, depending on the product category, the RSL shall be
validated with additional documentation in accordance with EN 15804:2012+A2:2019, Annex A. Such
documentation shall include validating documents for the product and/or the relevant essential
components of the product, e.g:
— recommendations for installation and maintenance including preventative maintenance;
— for plastic components exposed to direct UV-radiation a sufficient durability to ageing of the
material;
— for metallic components exposed to weathering a sufficient corrosion resistance of the component;
— for organic components (e.g. wood) a sufficient rot resistance of the component;
— information for coatings or other protective measures to be renewed during RSL;
— information for sealants to be renewed during RSL;
— information for components foreseen for cyclic replacement during RSL of the product;
— information on the expected performance and availability of spare parts (e.g. supplier guarantees);
NOTE 1 Rooflights and roof hatches are placed on a flat or slightly inclined roof surface and their exposure to
e.g. UV radiation are generally present during all hours with daylight. Individual components can be protected
due to their orientation or by other components.
NOTE 2 Windows (wood, aluminium, PVC): LOT32 Ecodesign of Windows Products, Task 2 – Market Analysis,
3 June 2015, Section 4.4.2
PVC: Life Cycle assessment of PVC and of principal competing materials Commissioned by European Commission,
2004.
6.3.5 System boundaries
6.3.5.1 General
EN 15804:2012+A2:2019 shall apply.
The environmental performance rooflights (3.1.1) and roof hatches (3.1.2) used for natural smoke and
heat exhaust in accordance with EN 12101-2:2003 shall be provided in separate EPDs in accordance
with this standard and is therefore outside of the boundaries of this LCA.
6.3.5.2 Product stage
EN 15804:2012+A2:2019 shall apply.
Usually most of the raw materials and components of rooflights (3.1.1) and roof hatches (3.1.2) are
delivered to the manufacturing site of the rooflight or roof hatch, because their manufacturers do not
produce them. The product stage include the raw materials impact, transport of the materials and during
the manufacturing, and manufacturing contributions.
For power operating accessories (3.1.6) which are assembled to the rooflights and roof hatches, the
environmental performance for product stage and for end of life stage shall not be considered within
the calculation of the environmental performance of rooflights and roof hatches and is therefore outside
of the boundaries of this LCA. The environmental performance for product stage and for end of life stage
of the power operating accessories is provided within separate EPDs of these products.
6.3.5.3 Construction stage
EN 15804:2012+A2:2019 shall apply.
The factory-assembled individual plastic rooflights, individual glass rooflights and roof hatches are in
many cases transported to a speciality retailer and from there they will be delivered to a building site.
In other cases also direct transport to the building site is done. These factory-assembled rooflights and
roof hatches including their upstands if applicable are typically lifted to the roof and installed by the
roofer together with the roofing itself. In some cases an installation by instructed assembly operators
may occur.
The transport packages of the continuous rooflight are mostly delivered to the specific building site
they are projected for. At site the packages get lifted to the roof normally by an existing crane or lift or
by an truck-mounted crane ordered for this specific job. At the roof the elements of the kit get assembled
to a continuous rooflight by instructed assembly operators of the manufacturer.
In case of at site upstands (3.1.7) not delivered by the manufacturer of the rooflight (3.1.1) or roof hatch
(3.1.2), the processes related to the upstand shall be considered at the building level and are in this case
outside of the boundaries of this LCA.
Generally the connection of the waterproofing to the upstand including all ancillary materials for
fastening, tightening, insulating, etc. shall be considered at the building level and is therefore outside
of the boundaries of this LCA.
6.3.5.4 Use stage
6.3.5.4.1 General
EN 15804:2012+A2:2019 shall apply.
Rooflights (3.1.1) and roof hatches (3.1.2) are essential elements of the building envelope. So beside
their primary intended uses of admitting daylight for rooflights respectively providing access for roof
hatches, a main function is the protection of the interior spaces against weathering and outside
conditions.
Additional intended uses of rooflights and roof hatches can be:
— natural ventilation of the building by manually or power operated, openable elements;
— fire compartmentation and smoke control;
— emergency exit;
— anti-violation.
The environmental impact of the use of functional accessories for power operation of product functions
depends on the intended control approach defined for the building. For manually controlled functions
the number of use cycles per year is normally low (normally once per day) whereas for automatic
controlled systems the number of use cycles per year is increasing due to the numbers of sensors
indicating the need for a use cycle (e.g. wind, rain, presence of people, air quality, temperature etc.).
6.3.5.4.2 B1 – B5 Use stage information modules related to the building fabric
EN 15804:2012+A2:2019 shall apply.
Generally the environmental impacts related to extraordinary circumstances during RSL, e.g.
earthquakes or hurricanes, are outside of the boundaries of this LCA.
The RSL of the rooflight (3.1.1) or roof hatch (3.1.2) may only be longer than the RSL of its key
components if this can be validated on base of taken protective precautions for these components or if
the replacement of these key components is considered as part of the life cycle.
Replacement or repair of worn or degraded parts shall be considered for components with a known
RSL shorter than the service life of the rooflight or roof hatch (e.g. hardware (3.1.5)).
- B1 Use of the installed product
As the rooflights and roof hatches are components of the building envelope they have an essential impact
on the energy efficiency of the construction works they get installed. These aspects related to the energy
efficiency of the building shall be evaluated at the building level on base of the relevant product’s
performances related to these aspects and are therefore outside of the boundaries of this LCA.
Therefore for the use stage, only the environmental impact of the rooflights and roof hatches not related
to the energy efficiency of the building shall be considered.
- B2 Maintenance
The maintenance module for rooflights and roof hatches, if applicable, comprises e.g.:
— Cleaning of the product (including water and energy usage)
— Lubricating of moving parts (for example of components for opening)
— Surface treatment (e.g. cyclic painting of wooden parts)
- B3 Repair
The repair module for rooflights and roof hatches, if applicable, comprises e.g.:
— Renewal of worn or damaged parts
— Repair of damages at the building site (e.g. straightening of welded metal sheet parts)
— Replacement of damaged single components (e.g. broken glazing element after impact)
Due to their usually limited accessibility, rooflights and roof hatches are typically not used manually
and sufficient resistance to common environmental impact is assessed in accordance with the relevant
harmonized product standards. Therefore, repair is only related to extraordinary environmental
circumstances e.g. hurricanes or to misuse. Module B3 – repair shall only be considered when
justification is provided to expect repair under common conditions.
- B4 Replacement
The replacement module for rooflights and roof hatches, if applicable, comprises e.g.:
— preventative replacement of components due to their limited durability (e.g. gaskets, sealants) or
the components end of RSL;
— the replacement of functional accessories to renew the function (e.g. motors);
— the replacement of damaged assemblies (e.g. complete individual rooflight lid (3.1.3));
— the replacement of whole construction elements after damage (e.g. the translucent part of a
continuous plastic rooflight after discoloration).
When relevant, replacement of rooflights or roof hatches after their RSL shall be considered according
to 6.3.5.2 (product stage) and 6.3.5.3 (construction stage).
- B5 Refurbishment
The refurbishment module for rooflights and roof hatches, if applicable, comprises e.g.:
— The restoration of rooflights or roof hatches on existing upstands (e.g. heightening of the upstand
(3.1.7))
— The upgrading of key parts of rooflights or roof hatches to increase their performance (e.g. light
transmitting parts (3.1.4) with lower thermal transmittance coefficients)
Rooflights and roof hatches may usually only be refurbished during RSL in relation to a refurbishment
of the roof itself for example when the RSL of the roof is significantly lower than the RSL of the rooflight
or roof hatch. Therefore, refurbishment shall only be considered when justification is provided to expect
a refurbishment of the roof of the specific project including and the rooflights or roof hatches within
their RSL.
These lists are non-exhaustive.
Replacement or repair of worn or degraded parts shall be considered for components with a known
RSL shorter than the service life of the rooflight or roof hatch (e.g. accessories). Any replacement of the
complete rooflight or roof hatch after the RSL of separate components (e.g. accessories).
Insulated glass units (IGU) shall always be calculated with a maximum of 30 years, unless otherwise
indicated in the product standard EN 1279-5 or specified by the manufacturer for specific in-use
conditions.
The RSL provided from the original manufacturers of closers, drives, moveable blinds and shutters shall
be used. If no RSL is known, an RSL of 20 years for drives and closers, and of 25 years for blinds and
shutters may be used.
Sealants and gaskets as well as power operating accessories are especially important for the proper
functioning of rooflights and roof hatches with safety and security requirements, e.g. emergency exits,
fire resistance and/or smoke control characteristics. Special care should therefore be taken to ensure
the correct maintenance of these components according to the manufacturers’ recommendations.
6.3.5.4.3 B6 – B7 Use stage information modules related to the operation of the building
- B6 Energy use to operate building integrated technical systems
EN 15804:2012+A2:2019 shall apply.
The operational energy use of power operating accessories (3.1.6) assembled directly to rooflights
(3.1.1) or roof hatches (3.1.2) and needed for an intended function of the rooflights or roof hatches shall
be considered respecting the intended installation of the products. The operational energy use of any
equipment to control these functions is outside of the boundaries of this LCA.
- B7 Operational water use by building integrated technical systems
Rooflights and roof hatches do not usually operate with water. Therefore, the impact of module B7 -
operational water use is typically zero.
6.3.5.5 End of life stage
EN 15804:2012+A2:2019 shall apply.
At the end of their life cycle rooflights (3.1.1) or roof hatches (3.1.2) get normally deconstructed due to
their demountable design and removable fastenings. So generally the deconstructed materials and sub-
assemblies can be reused or recycled. The grade of disassembly varies between the products due to
their construction and potential foreseen reuse.
The way of waste processing and so the waste fractions intended for reuse and recycling depends mostly
on the materials, the products are made from. In some cases also the treatment of the materials e.g.
connections between different materials may influence the waste processing.
Power operating accessories (3.1.6) of incorporated functions which are assembled to the rooflights
and roof hatches, shall not be considered within the calculation of the environmental performance of
rooflights and roof hatches and is therefore outside of the boundaries of this LCA.
6.3.5.6 Benefits and loads beyond the product system boundary in module D
EN 15804:2012+A2:2019 shall apply.
6.3.6 Criteria for the exclusion of inputs and outputs
EN 15804:2012+A2:2019 shall apply.
6.3.7 Selection of data
EN 15804:2012+A2:2019 shall apply.
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