mjr6550 Posted October 4, 2016 Report Share Posted October 4, 2016 This photo is from the back side of stucco removed from a wall. The WRB was #15 felt. The lowest temperature during the time period that it was probably installed was 45 degrees. Any ideas what caused this pattern. I was present when the stucco was removed from 28 townhouses and only about one wall on one unit looked like this. Click to Enlarge 65.3 KB Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 4, 2016 Report Share Posted October 4, 2016 Sure looks like ice crystals. Either that or a bunch of birds were walking on it. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted October 4, 2016 Report Share Posted October 4, 2016 This photo is from the back side of stucco removed from a wall. The WRB was #15 felt. The lowest temperature during the time period that it was probably installed was 45 degrees. Any ideas what caused this pattern. I was present when the stucco was removed from 28 townhouses and only about one wall on one unit looked like this. Click to Enlarge 65.3 KB Was the substrate OSB? Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted October 5, 2016 Author Report Share Posted October 5, 2016 Yes to OSB. Quote Link to comment Share on other sites More sharing options...
Scottpat Posted October 6, 2016 Report Share Posted October 6, 2016 Yes to OSB. Looks like the OSB imprinted onto it.. If that is stucco, it is missing the metal lath. I looks like it was applied directly onto the OSB. Quote Link to comment Share on other sites More sharing options...
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