John Dirks Jr Posted March 10, 2014 Report Posted March 10, 2014 What is the white coloration on the interior of this under slab transite ductwork? Could it be deterioration and friable asbestos fibers? Click to Enlarge 41.92 KB
John Dirks Jr Posted March 10, 2014 Author Report Posted March 10, 2014 It looks like efflorescence. Good call. I should have figured that. It makes sense considering the moisture concerns related to this under slab duct work.
John Kogel Posted March 11, 2014 Report Posted March 11, 2014 John is that pic laying on its side? I think if you rotate the pic, the efflorescence would show the ground water level, maybe? I would not dismiiss the possibility of friable asbestos either, because somebody might decide to swab the pipes and have a lab test done of those particles.
John Dirks Jr Posted March 11, 2014 Author Report Posted March 11, 2014 John is that pic laying on its side? I think if you rotate the pic, the efflorescence would show the ground water level, maybe? I would not dismiiss the possibility of friable asbestos either, because somebody might decide to swab the pipes and have a lab test done of those particles. Trust me, I always cover my butt when it comes to this stuff. That picture is oriented correctly. It's displayed as right side up. If you look close you can see some debris sitting at the bottom of the pipe.
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