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°.
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 15976, Flexible sheets for waterproofing — Determination of emissivity ASTM C1549‑16, Standard test method for determination of solar reflectance near ambient temperature using a portable solar reflectometer ASTM E1980‑11, Standard practice for calculating Solar Reflectance Index of horizontal and low-sloped opaque surfaces ASTM E903‑12, Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres
