EN 15976:2011
(Main)Flexible sheets for waterproofing - Determination of emissivity
Flexible sheets for waterproofing - Determination of emissivity
This European Standard specifies the method to determine the emissivity of plastic, rubber and bitumen vapour control layers, underlays for walls and underlays for discontinuous roofing.
It also defines a conditioning procedure for these product families in order to quantify the sensitivity of emissivity to humidity and temperature.
Abdichtungsbahnen - Bestimmung des Emissionsgrades
Diese Europäische Norm legt das Verfahren zur Bestimmung des Emissionsgrades von Kunststoff-, Elastomer- und Bitumendampfsperrbahnen sowie von Unterdeck- und Unterspannbahnen für Wände und für Dachdeckungen fest.
Darüber hinaus ist ein Konditionierungsverfahren für diese Produktfamilien festgelegt, um die Empfindlichkeit des Emissionsgrades gegenüber Luftfeuchte und Temperatur zu ermitteln.
Feuilles souples d'étanchéité - Détermination de l'émissivité
La présente norme européenne spécifie la méthode de détermination de l’émissivité des écrans souples plastiques, élastomères et bitumineux, écrans souples pour murs extérieurs et écrans souples de sous-toiture pour couverture en petits éléments discontinus.
Elle définit également un mode opératoire de conditionnement pour ces familles de produits, afin de quantifier la perte potentielle d’émissivité en fonction de l’humidité et de la température.
Hidroizolacijski trakovi - Ugotavljanje emisivnosti
Ta evropski standard določa metodo za ugotavljanje emisivnosti plastičnih, gumijastih in bitumenskih plasti za nadzor hlapov, podložnih folij za stene in podložnih folij za prekinjene strehe. Prav tako določa postopek za pogoje za te družine proizvodov, da se ovrednoti občutljivost emisivnosti na vlago in temperaturo.
General Information
- Status
- Published
- Publication Date
- 26-Apr-2011
- Withdrawal Date
- 30-Oct-2011
- Technical Committee
- CEN/TC 254 - Flexible sheets for water proofing
- Drafting Committee
- CEN/TC 254 - Flexible sheets for water proofing
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 28-Jun-2023
- Completion Date
- 14-Apr-2025
Overview
EN 15976:2011 is a European Standard developed by CEN that specifies the method for determining the emissivity of flexible waterproofing sheets. This standard applies to plastic, rubber, and bitumen vapour control layers, as well as underlays for walls and discontinuous roofing. A unique aspect of this standard is its inclusion of a conditioning procedure designed to evaluate how emissivity varies with changes in humidity and temperature.
Understanding emissivity is essential for assessing the thermal performance and durability of flexible waterproofing materials, especially those designed to act as radiant barriers by reflecting infrared radiation.
Key Topics
Emissivity Definition: Emissivity (denoted as ε) is the ratio of energy radiated by a surface compared to a perfect blackbody at the same temperature. It quantifies a material's ability to emit heat through thermal radiation.
Measurement Principle: The standard utilizes a hemispherical blackbody radiator operating at a controlled temperature (100°C ± 0.5°C) to uniformly illuminate specimen surfaces with thermal infrared radiation.
Testing Setup: The apparatus includes an infrared sensor and lens assembly, a specimen holder ensuring flat, wrinkle-free samples, and calibration standards with known high and low emissivity values for accuracy.
Calibration and Calculation: Emissivity values are determined by comparing sample sensor signals to two certified calibration standards, covering an emissivity range of 0.02 to 0.94.
Specimen Preparation: Samples should be conditioned at controlled temperature (23 ± 2 °C) and humidity (50 ± 20 % RH) to ensure repeatable and reliable measurements.
Conditioning Procedure: To assess emissivity sensitivity, specimens undergo a 28-day exposure in a climatic chamber at 90% relative humidity and 70°C. This simulates potential ageing effects from humidity on material performance.
Reporting: Results are presented as mean emissivity values (to two decimal places), with standard deviations and all single test values documented. Values outside apparatus measurement limits are adjusted accordingly.
Applications
Waterproofing Material Quality Control: EN 15976:2011 enables manufacturers and testing laboratories to accurately determine the emissivity of flexible sheets, ensuring compliance with thermal performance criteria.
Thermal Insulation Assessment: Low emissivity surfaces reflect infrared radiation, improving building energy efficiency. This standard helps identify and quantify such radiant barriers within waterproofing systems.
Durability Evaluation: By incorporating conditioning to simulate humidity and temperature effects, this standard assists in predicting how emissivity - and thus thermal properties - may change over time.
Building Envelope Design: Architects and engineers can use emissivity data to select appropriate vapour control layers and underlays that optimize thermal management in roofs and walls.
Research and Development: Material scientists can leverage the standardized method to innovate low-emissivity waterproofing solutions with improved longevity and thermal characteristics.
Related Standards
EN 13416: Sampling rules for bitumen, plastic, and rubber sheets used in roof waterproofing, indispensable for specimen selection under EN 15976.
EN 13859-1: Defines characteristics of underlays for discontinuous roofing, relevant for application context of some tested materials.
EN 13859-2: Related to underlays for walls, supporting comprehensive evaluation of waterproofing systems.
EN 13984: Covers plastic and rubber vapour control layers, directly linked to the materials tested by EN 15976.
EN 13970: Addresses bitumen water vapour control layers, further relating to waterproofing product classifications.
By following EN 15976:2011, stakeholders in the construction and waterproofing industries can ensure precise, reproducible measurement of flexible sheets’ emissivity - a critical factor in thermal performance and durability. This standard fosters consistent quality assurance aligned with European regulatory expectations.
Frequently Asked Questions
EN 15976:2011 is a standard published by the European Committee for Standardization (CEN). Its full title is "Flexible sheets for waterproofing - Determination of emissivity". This standard covers: This European Standard specifies the method to determine the emissivity of plastic, rubber and bitumen vapour control layers, underlays for walls and underlays for discontinuous roofing. It also defines a conditioning procedure for these product families in order to quantify the sensitivity of emissivity to humidity and temperature.
This European Standard specifies the method to determine the emissivity of plastic, rubber and bitumen vapour control layers, underlays for walls and underlays for discontinuous roofing. It also defines a conditioning procedure for these product families in order to quantify the sensitivity of emissivity to humidity and temperature.
EN 15976:2011 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.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hidroizolacijski trakovi - Ugotavljanje emisivnostiAbdichtungsbahnen - Bestimmung des EmissionsgradesFeuilles souples d'étanchéité - Détermination de l'émissivitéFlexible sheets for waterproofing - Determination of emissivity91.100.50Veziva. Tesnilni materialiBinders. Sealing materialsICS:Ta slovenski standard je istoveten z:EN 15976:2011SIST EN 15976:2011en,fr,de01-oktober-2011SIST EN 15976:2011SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15976
April 2011 ICS 91.100.50 English Version
Flexible sheets for waterproofing - Determination of emissivity
Feuilles souples d'étanchéité - Détermination de l'émissivité Abdichtungsbahnen - Bestimmung des Emissionsgrades This European Standard was approved by CEN on 17 March 2011.
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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15976:2011: ESIST EN 15976:2011
1 Scope This European Standard specifies the method to determine the emissivity of plastic, rubber and bitumen vapour control layers, underlays for walls and underlays for discontinuous roofing.
It also defines a conditioning procedure for these product families in order to quantify the sensitivity of emissivity to humidity and temperature.
2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 13416, Flexible sheets for waterproofing — Bitumen, plastic and rubber sheets for roof waterproofing — Rules for sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply 3.1 emissivity emissivity of a material (usually written 0) is the ratio (proportion) of the energy radiated by a surface relative to the energy radiated by a blackbody at the same temperature. It is a measure of a material's ability to radiate heat 3.2 blackbody blackbody is a theoretical object that absorbs all electromagnetic radiation that falls on it at all wavelengths. No electromagnetic radiation passes through it and none is reflected NOTE A blackbody is also a perfect emitter with a normal and corrected emissivity of 1.
3.3 TIR Thermal Infrared Radiation principle
4 Symbols For the purposes of this document, the following symbols apply c specific heat capacity is the measure of the heat energy required to increase the temperature of a unit quantity of a substance by a certain temperature interval.
the wavelength
is the distance between repeating units of a propagation wave of a given frequency. NOTE In this document it is understood the wave length is limited to the infrared light spectrum.
(epsilon) emissivity (see above definition of emissivity)
(0 ≤ 0 ≤ 1).
(rho) reflectivity coefficient is the proportion of the incident electromagnetic radiation reflected from a surface or an optical element.
τ (tau) transmission coefficient is the proportion of incident electromagnetic radiation (light) passes through a surface or an optical element. 0L
emissivity for the low emissive calibration standard. 0H
emissivity for the high emissive calibration standard. U
sensor signal of the specimen in Volt. UH
sensor signal of the high emissive calibration standard in Volt. UL
sensor signal of the low emissive calibration standard in Volt. 5 Principle of low emitting surfaces
Flexible sheets for waterproofing with a low emitting surface are commonly refer
...
SIST EN 15976:2011 표준은 방수용 유연 시트의 방사율을 측정하는 방법을 규정하고 있습니다. 이 표준의 범위는 플라스틱, 고무 및 비트멘 증기 제어 층과 벽 및 불연속 지붕을 위한 하부재에 해당합니다. 표준은 이 제품군의 방사율이 습도와 온도에 얼마나 민감한지를 정량화하기 위해 필요한 조건화 절차도 정의하고 있습니다. 이 표준의 강점 중 하나는 다양한 재료에 대한 방사율 측정 방법을 포함하여, 건축 및 건설 산업에 매우 중요한 데이터 제공하는 점입니다. 이는 방수 성능을 보장하는 데 필수적이며, 고객에게 더욱 신뢰할 수 있는 제품 선택을 가능하게 합니다. 또한, 표준화된 조건화 절차는 실험 결과를 보다 일관되게 만들고, 결과의 비교 가능성을 높여줍니다. SIST EN 15976:2011은 환경 변화에 따른 재료의 성능 예측을 용이하게 하여, 지속 가능한 건설과 에너지 효율적인 설계에 기여할 수 있는 중요한 역할을 합니다. 이러한 점에서 표준은 현재 건축 및 재료 과학 분야에서의 관련성 또한 높습니다. 이를 통해 기업들은 고객의 요구에 부응하며, 시장 경쟁력을 갖출 수 있습니다.
La norme SIST EN 15976:2011, intitulée « Feuilles flexibles pour l’étanchéité - Détermination de l’émissivité », offre un cadre méthodologique solide pour évaluer l’émissivité des couches de contrôle de vapeur en plastique, en caoutchouc et en bitume, ainsi que des sous-couches pour murs et pour toitures discontinuées. L'un des principaux points forts de cette norme réside dans sa capacité à fournir une méthode précise pour mesurer l'émissivité, essentielle pour garantir l'efficacité thermique et la durabilité des systèmes d'étanchéité. En définissant une procédure de conditionnement, la norme permet d'analyser de manière exhaustive la sensibilité de l’émissivité aux variations d'humidité et de température, ce qui est crucial dans des environnements changeants. La pertinence de la norme EN 15976:2011 est indéniable dans le secteur de l’étanchéité, car elle établit des critères clairs pour la performance des matériaux. Les professionnels peuvent s’appuyer sur cette norme pour s’assurer que les produits utilisés répondent aux exigences de durabilité et de fiabilité. Son approche normée favorise également la transparence et la confiance entre fabricants et utilisateurs, consolidant ainsi son poids dans le marché des produits d'étanchéité. En conclusion, la norme SIST EN 15976:2011 s'affirme comme un outil indispensable pour les acteurs du secteur, garantissant que les matériaux d'étanchéité sont évalués de manière cohérente et rigoureuse, tout en répondant aux enjeux de performance thermique dans la construction.
SIST EN 15976:2011は、防水用の弾力性シートに関する非常に重要な規格です。この規格は、プラスチック、ゴム、ビチューメンの蒸気制御層や壁用下地、断続的屋根用下地におけるエミッシビティの測定方法を明確にしています。これにより、製品の性能評価が科学的かつ一貫性のある方法で行えることが保証されています。 この標準の強みの一つは、製品ファミリーごとの条件設定手順を定義している点です。これにより、エミッシビティの湿度や温度に対する感度を定量化することができ、実際の使用環境における性能を正確に反映します。このプロセスは、製品開発者やエンジニアがシートを選択する際に、適切な情報に基づいた判断を行えるようサポートします。 さらに、EN 15976:2011は、欧州内での規格化を促進し、異なる国や製品間の一貫性を高める役割を果たしています。これにより市場の透明性が向上し、消費者や業界関係者に対して信頼性のある製品を提供する基盤が築かれています。この標準は、特に防水に関連する建設材料の品質管理において重要な役割を果たし、業界全体の基準を引き上げています。 このように、SIST EN 15976:2011は、エミッシビティの評価を通じて、防水シート製品の信頼性を高めるための重要な標準であり、業界のニーズに応える適切かつ効果的な手段を提供しています。
Die Norm EN 15976:2011 bietet eine umfassende und präzise Methodik zur Bestimmung der Emissivität von flexiblen Bahnen zur Abdichtung. Die Relevanz dieser Norm liegt in ihrer Fähigkeit, die Eigenschaften von Kunststoffen, Gummi und Bitumen-Dampfsperren, sowohl für Wandunterlagen als auch für Unterlagen bei discontinuierlichen Dächern, zu standardisieren und zu evaluieren. Ein herausragendes Merkmal dieser Norm ist der definierte Konditionierungsprozess, der eine wesentliche Rolle spielt, um die Sensitivität der Emissivität gegenüber Feuchtigkeit und Temperatur zu quantifizieren. Diese Spezifikation ermöglicht es Fachleuten, die Auswirkungen von klimatischen Bedingungen auf die Emissivität besser zu verstehen und somit fundierte Entscheidungen hinsichtlich der Materialwahl und der Anwendungsbedingungen zu treffen. Die Norm stellt sicher, dass die Methoden reproduzierbar und vergleichbar sind, was die Qualitätssicherung in der Bauindustrie fördert. Durch die klare Definition der Prüfstandards trägt die EN 15976:2011 dazu bei, die Produktentwicklung effizienter zu gestalten und Produkte zu entwickeln, die den hohen Anforderungen des Marktes gerecht werden. Des Weiteren stärkt die Norm die Sicherheit und Zuverlässigkeit der Abdichtungslösungen, indem sie sicherstellt, dass die getesteten Materialien den festgelegten Emissivitätswerten entsprechen. Dies macht die EN 15976:2011 zu einem unerlässlichen Instrument für Hersteller und Prüfstellen, die sich mit der Entwicklung und Bewertung von Abdichtungsmaterialien beschäftigen. Insgesamt ist die EN 15976:2011 als europäische Norm von hoher Bedeutung, da sie nicht nur technische Richtlinien zur Bestimmung der Emissivität bietet, sondern auch die Grundlage für qualitativ hochwertige und nachhaltige Baupraktiken legt.
The EN 15976:2011 standard is pivotal in the field of waterproofing, specifically addressing the determination of emissivity for flexible sheets such as plastic, rubber, and bitumen vapour control layers. Its well-defined scope establishes a comprehensive framework for evaluating materials used in construction, particularly underlays for walls and discontinuous roofing systems. One of the primary strengths of this standard is its focus on providing a standardized method for determining emissivity, which is crucial for assessing the thermal performance of building materials. The clarity in methodology ensures consistency in testing, allowing manufacturers and architects to compare materials effectively and make informed decisions based on reliable data. Additionally, the EN 15976:2011 standard includes a detailed conditioning procedure to evaluate how emissivity varies with changes in humidity and temperature. This aspect is significant because it acknowledges the real-world conditions under which these materials operate, enhancing the relevance of the standard in practical applications. By quantifying the sensitivity of emissivity to environmental factors, the standard aids in selecting appropriate materials for specific climates and building designs. Overall, EN 15976:2011 stands out as a crucial document for professionals in the construction and building materials industry, ensuring that the materials used for waterproofing meet stringent performance criteria. Its emphasis on reliable testing methods and practical relevance in varying conditions underscores the importance of this standard in promoting quality and sustainability in building practices.
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