I got a call about possibly doing an IR scan for a roof of an industrial building from roofer. I agreed to meet at the location just to get a better feel of the issue and the scope of the project.
It turns out to not be a flat roof (the address given to me was off by a number, so I had looked at the roof across the street on google), but a pitched metal roof with foam roofing.
The issue of concern is despite numerous repairs, there are certain points of the roof that leak on a regular basis.
Per the roofer, there have been 3 layers of foam applied over a 35 year period, but the coating has not always been kept up prior to him taking over. He suspects there is water trapped in between the layers.
I didn’t take any IR pictures (yet) and we agreed that moment was not the best time to do the work (there was some ponding water in the valleys from recent rains that would give an obvious false reading).
I did pull out my camera just to see if there was anything blatantly obvious.
Scanning from below was pointless, due the steel beams, pipes and duct work.
Scanning from on the roof was difficult due to the glare of the sun on the screen. But I did notice I could easily see the ridges of the metal roof through the 3 layers of foam.
I also noticed any shadow on the foam (from the AC condensers, etc) made a HUGE difference in temperature reading of the foam itself (more so than other roofing materials) which has me concerned if even if I came back after sun down, would the shadows still read cold? Or would the foam even out quickly with no sun?
Has anyone does IR scans of a foam roof?
Should I use the same protocol one would use on a flat roof material, or this really a different approach?
Is IR just overkill on such a material? It almost seems like using my moisture meter would be more useful.
Any thoughts, comments, articles, appreciated.