It is a popular trend to specify a pre-painted steel roofing material from an inspirational design approach.
Good engineering practice suggests that a high solar reflective index (SRI) roof provides optimal performance. It needs to be noted that most of Safal Steel’s Colorplus® range offer exceptionally good solar reflectance and transmittance performance, even among the darker colours. So, too, does Zincal®
A Zincal® roof transmits 65 watts/m2 of heat compared with 120 watts/m2 for a galvanised roof and 150 watts/m2 for a clay tile roof (*).
One aspect of a solar array worth considering is the erosive effect that dripping water can have on painted surfaces. In many instances, an Al/Zn-coated metal roof provides better surface performance than a painted one.
Due to the fact that almost the entire roof or a visible section can be covered during the roofing process, a Zincal® roof is also well worth considering.