When should I sample for mold?

You need to sample for mold when you suspect that you have a problem and you need to know the extent of the problem.  If you have a dark mold-like growth on your wet drywall, you don’t need a laboratory to tell you its mold. What you may need to know is how that mold has affected your living space… is it confined to that one area or has it become airborne and spread throughout the home? The best way of detecting mold is through your olfactory senses (smell). That musty, moldy smell is usually the microbial volatile organic compounds (MVOC’s) produced by mold, and is a good indicator that you have a mold problem.