White Residue On Flooring Under Carpets

[Joseph Bieselin]

First time wanting to rip up some carpets and did a test in a closet corner. Has anyone experienced white residue under the carpet pad? It took some scrapping to even see if there was wood underneath.

Thanks in advance & hope everyone is having a good holiday weekend!

[Kyle J.]

My guess would be overspray from the drywalling/priming/painting.  Typically that would all be done before the carpets were put down.  If it was was some type of growth, it would also be on the bottom of your carpet pad.  However, as you can see, that looks completely clean.