ISO Releases New Curtainwall Standard

ISO 12631:2017, Thermal performance of curtain walling – Calculation of thermal transmittance, specifies a method "for calculating the thermal transmittance of curtain walls consisting of

2025 May 05

ISO 12631:2017 (en), Thermal performance of curtain walling

This document specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected to, frames.

2025 Aug 24

Experimental and simulation study on the thermoelectric

This study presents a more precise and thorough approach for evaluating semi-transparent PV curtain walls'' performance, providing insights for future sustainable

2025 Jul 04

Curtain Walling: Total solar energy transmission

The determination of the total solar energy transmittance (solar factor, g-value) of translucent glazings should be carried out in accordance with EN 410, or if relevant, with EN 13363-1 or

2025 Jan 09

Solar protection

This calculation is based on the spectral transmission and reflection data of the solar protection device and the glazing. The calculation requires specialized software to solve the non-linear

2025 Jun 06

DS/EN ISO 12631

This International Standard specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected

2025 Jun 03

Solar protection

This calculation is based on the spectral transmission and reflection data of the solar protection device and the glazing. The calculation requires

2026 Jan 30

Technical Documents

One of NFRC''s main functions is to promulgate technical standards that establish uniform procedures for determining the various energy performance ratings, including U-factor,

2025 Aug 29

ISO 12631:2017

ISO 12631:2017 specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or

2026 Feb 25

EPB standards on thermal, solar and daylight properties of

EN ISO 12631 provides a calculation method to obtain the thermal transmittance of curtain walls consisting of glazed and/or or opaque panels fitted in a frame.

2024 Apr 30

ISO 12631:2017

ISO 12631:2017 specifies a method for calculating the thermal transmittance of curtain walls consisting of glazed and/or opaque panels fitted in, or connected to, frames.

2024 Jun 28