September 06, 2016 15:56
Today, the majority of new roofing is a white single-ply membrane, either TPO (thermoplastic polyolefin) or PVC (polyvinyl chloride). This is due mostly to new energy codes that require reflective roofing to reduce heat absorption into the structure. Over the past several years we have investigated moisture build-up and damage to building materials occurring underneath this type of roofing on numerous occasions. The purpose of this article is to get the word out that night-time radiant cooling environments are causing detrimental moisture conditions affecting white single-ply roofing systems.