Jerry Lozier Posted January 6, 2014 Report Share Posted January 6, 2014 Early '50s flat roof home. Don't see flat roof gravel roofs often, this one has a brass sprinkler and another termination that may have been at one time. Was that the original cooling the roof down system before A/C??? Click to Enlarge 90.06 KB Click to Enlarge 98.95 KB Quote Link to comment Share on other sites More sharing options...
kurt Posted January 7, 2014 Report Share Posted January 7, 2014 Maybe. A lot of old warehouses in Chicago were engineered to pond water as a cooling method. 1950's Yakima...they might have done something similar. Flat roofs used to be coat tar pitch; the stuff would heat up in the sun and flow, self healing in the process. The stuff worked reasonably well. Can you see if it's coal tar? Quote Link to comment Share on other sites More sharing options...
Jerry Lozier Posted January 7, 2014 Author Report Share Posted January 7, 2014 Thanks Kurt, I called it asphalt- gravel and appears to be recently recoated and new gravel. Even at that would not know what coal tar looks like Quote Link to comment Share on other sites More sharing options...
John Kogel Posted January 7, 2014 Report Share Posted January 7, 2014 Thanks Kurt, I called it asphalt- gravel and appears to be recently recoated and new gravel. Even at that would not know what coal tar looks like A drop of coal tar, or tar pitch, or asphalt, depending on who is describing it, takes about one decade, 10 years, to form and drip. It was a big deal in the scientific world in 2013 when somebody was on the scene to witness and film the drop falling. http://blogs.discovermagazine.com/d-bri ... sw_-Ps6z1s Re: sprinklers on the roof, they are there to scare seagulls off the roof. [] I inspected a roof where the owner had a motion detector rigged up to turn sprinklers on. Seagull crap and shells all over the roof. Water was turned off. Quote Link to comment Share on other sites More sharing options...
DeBolt Posted January 9, 2014 Report Share Posted January 9, 2014 Hey Jerry, I have seen roof top sprinkler systems installed for fire prevention (Mountain homes), but I doubt that is the reason in your case. How do you call out bird targeted motion sensor roof top sprinkler systems? [:-bigeyes Quote Link to comment Share on other sites More sharing options...
John Kogel Posted January 9, 2014 Report Share Posted January 9, 2014 Hey Jerry, I have seen roof top sprinkler systems installed for fire prevention (Mountain homes), but I doubt that is the reason in your case. How do you call out bird targeted motion sensor roof top sprinkler systems? [:-bigeyes I didn't call it out. I told my client it was up there and gave him pictures to look at. Prairie farmer moving to a retirement home. I'm sure he designed some other bird scare device. Quote Link to comment Share on other sites More sharing options...
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