DonTx Posted February 18, 2004 Report Share Posted February 18, 2004 We've had quite a bit of rain lately, however I hardly ever see efflorescence like I found on these two homes. The last picture is from a slab that the builder added a layer of skim coat on to hide the honeycombing. Could this be caused by a lack of a moisture barrier? Donald Download Attachment: IMG_0151.JPG 74.73 KB Download Attachment: IMG_0169.JPG 54.34 KB Quote Link to comment Share on other sites More sharing options...
chrisprickett Posted February 18, 2004 Report Share Posted February 18, 2004 Donald, It looks like there's a pretty good drip line, on the ground, from the eaves. No gutters? If that's the case, it could be from splash back. We get a ton of efflorescence out her in AZ. More often than not, it's harmeless. Quote Link to comment Share on other sites More sharing options...
kurt Posted February 18, 2004 Report Share Posted February 18, 2004 Originally posted by Donald Lawson We've had quite a bit of rain lately, however I hardly ever see efflorescence like I found on these two homes. The last picture is from a slab that the builder added a layer of skim coat on to hide the honeycombing. Could this be caused by a lack of a moisture barrier? Donald Yes. The second photo looks like rising damp, i.e., moisture wicking up from below. Quote Link to comment Share on other sites More sharing options...
mgbinspect Posted February 22, 2006 Report Share Posted February 22, 2006 If the house was constructed in the winter time and accelerators were used in the mortar or concrete, it may higher concentrations of calcium and salt from the accelerator. Quote Link to comment Share on other sites More sharing options...
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