EN 17190:2018
(Main)Flexible sheets for waterproofing - Solar Reflectance Index
Flexible sheets for waterproofing - Solar Reflectance Index
This European Standard gives a calculation method of the Solar Reflectance Index (SRI) and the determination of solar reflectivity and thermal emissivity for waterproofing flexible sheets for roofs with a slope smaller than 10°.
Abdichtungsbahnen - Index des Reflexionsvermögens
Diese Europäische Norm enthält ein Berechnungsverfahren für den Index des Reflexionsvermögens (SRI, en: Solar Reflectance Index) sowie die Bestimmung des solaren Reflexionsgrads und des Wärmeemissionsgrads für Abdichtungsbahnen für Dächer mit einem Neigungswinkel < 10°.
Feuilles souples d'étanchéité - Indice de Réflectance Solaire
La présente Norme européenne spécifie une méthode de calcul de l'Indice de Réflectance Solaire (IRS) ainsi que la détermination de la réflectivité solaire et de l'émissivité thermique des feuilles souples d’étanchéité pour les toitures de pente inférieure à 10°.
Hidroizolacijski trakovi - Indeks odbojnosti
Ta evropski standard podaja računsko metodo za indeks solarne odbojnosti (SRI) ter opredeljuje solarno odbojnost in toplotno emisivnost za tesnjenje hidroizolacijskih trakov za strehe z naklonom manj kot 10°.
General Information
- Status
- Published
- Publication Date
- 16-Oct-2018
- Withdrawal Date
- 29-Apr-2019
- Technical Committee
- CEN/TC 254 - Flexible sheets for water proofing
- Drafting Committee
- WG 17 - Environmental and sustainability topics
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 14-Jan-2025
- Completion Date
- 14-Apr-2025
Overview
EN 17190:2018 is a European Standard developed by CEN that specifies a precise method for calculating the Solar Reflectance Index (SRI) for flexible waterproofing sheets used primarily for low-slope roofs (with slopes less than 10°). This standard focuses on determining two critical properties of waterproofing membranes: solar reflectivity and thermal emissivity. Both factors strongly influence the thermal performance of roofing materials by affecting heat absorption and radiation, crucial for energy-efficient building design.
This standard supports manufacturers, testers, and specifiers of flexible waterproofing sheets to accurately assess and report the solar reflective properties of these materials, aiding in reducing cooling loads and improving roof longevity through solar heat management.
Key Topics
Solar Reflectance Index (SRI): EN 17190:2018 defines the calculation method for SRI based on ASTM E1980-11, considering medium wind speed conditions. SRI values range from 0 (standard black) to 100 (standard white), representing a surface’s relative temperature under solar exposure.
Solar Reflectivity Measurement: The standard refers to ASTM C1549-16 and ASTM E903-12 for measuring the solar reflectivity of waterproofing sheets. Reflectivity assesses the ratio of solar radiation reflected by the surface relative to incident solar radiation.
Thermal Emissivity: The ability of a roofing sheet to emit absorbed heat is measured following EN 15976 and can also align with ASTM C1371. Emissivity significantly affects cooling performance at night.
Sampling and Testing Protocols: Sampling involves taking five specimens from a new roll of waterproofing material, ensuring cleanliness to avoid altering radiative properties. The standard mandates detailed test reports including sample identification, methods used, and test outcomes.
Precision and Variability: The standard notes that variations in measured SRI can be +/-4 due to manufacturing processes and may change by more than 10% once installed due to contamination or wear.
Applications
EN 17190:2018 is essential in multiple practical contexts:
Roofing Material Selection: Architects and building engineers use SRI values to specify roofing membranes that reduce heat gain, contributing to lower building cooling demands.
Cool Roof Certification: Compliance with EN 17190 supports meeting cool roof performance criteria in green building certifications, enhancing environmental sustainability.
Product Development: Manufacturers utilize the standard to design and optimize flexible waterproofing sheets with improved solar reflectance and thermal emissivity, thus enhancing energy efficiency.
Quality Control and Performance Verification: Testing labs employ the standard to verify product claims on solar reflectance and emissivity, ensuring consistency and reliability.
Energy Efficiency Strategies: Building professionals integrate products tested according to EN 17190 to implement effective passive cooling solutions in hot climates or urban heat island mitigation programs.
Related Standards
- EN 15976: Determination of emissivity for flexible waterproofing sheets.
- ASTM C1549-16: Solar reflectance measurement using solar reflectometers.
- ASTM E1980-11: Calculation of the Solar Reflectance Index (SRI) for opaque surfaces.
- ASTM E903-12: Comprehensive test method for measuring solar absorptance, reflectance, and transmittance.
- ASTM C1371: Emittance determination using portable emissometers.
Summary
EN 17190:2018 provides a rigorously defined framework for assessing the solar reflectance and thermal emissivity of flexible waterproofing sheets for low-slope roofing. By standardizing the Solar Reflectance Index calculation and measurement methods, this standard ensures reliable, comparable data that helps optimize thermal performance, reduce energy consumption, and improve building sustainability. Stakeholders in construction, roofing product manufacturing, and energy-efficient design will benefit from implementing EN 17190 to enhance roof system performance and contribute to sustainable building practices.
Keywords: EN 17190, Solar Reflectance Index, flexible waterproofing sheets, low-slope roofs, solar reflectivity, thermal emissivity, cool roofs, roofing standards, energy efficient roofing, CEN standards, building envelope, waterproof membrane testing.
Frequently Asked Questions
EN 17190:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Flexible sheets for waterproofing - Solar Reflectance Index". This standard covers: This European Standard gives a calculation method of the Solar Reflectance Index (SRI) and the determination of solar reflectivity and thermal emissivity for waterproofing flexible sheets for roofs with a slope smaller than 10°.
This European Standard gives a calculation method of the Solar Reflectance Index (SRI) and the determination of solar reflectivity and thermal emissivity for waterproofing flexible sheets for roofs with a slope smaller than 10°.
EN 17190:2018 is classified under the following ICS (International Classification for Standards) categories: 91.100.50 - Binders. Sealing materials. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 17190:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hidroizolacijski trakovi - Indeks odbojnostiAbdichtungsbahnen - Index des ReflexionsvermögensFeuilles souples d'étanchéité - Indice de Réflectance SolaireFlexible sheets for waterproofing - Solar Reflectance Index91.100.50Veziva. Tesnilni materialiBinders. Sealing materialsICS:Ta slovenski standard je istoveten z:EN 17190:2018SIST EN 17190:2018en,fr,de01-december-2018SIST EN 17190:2018SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 17190
October
t r s z ICS
{ sä s r rä w r English Version
Flexible sheets for waterproofing æ Solar Reflectance IndexFeuilles souples d 5étanchéité æ Indice de Réflectance Solaire
Abdichtungsbahnen æ Index des ReflexionsvermögensThis European Standard was approved by CEN on
t r May
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s y s { rã t r s z ESIST EN 17190:2018
European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Sampling . 5 5 Solar reflectivity . 5 6 Thermal emissivity . 5 7 Solar Reflectance Index . 5 8 Expression of the results . 5 9 Test report . 6 Bibliography. 7
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