mold problem!!!! built in Cabs

I've had this problem too. I had fiberglass tucked in my rim joist, the escaping warm air hitting the cold and the fiberglass was just soaked. You have to stop this, airsealing and insulation is the best way. I used ridgid foam and canned foam to seal the spaces. I had an energy audit with a blower door to find my problem areas. Many utilities are doing this for a very low fee, around here in the midwest. I paid $50 for a $300 dollar test. I have done most of the recomendations of mine and have seen a drop in energy bills in both summer and winter.
Dan

thanks for the info dan,, we are gonna go with 2" foam the foil faced stuff and then will seal the joints with tape and spray foam.. just taking the drawer on the botttom out for a couple days dried up the area.. but the cabs will be taken out and the area boxed in with the 2" foam to stop the heat loss, am looking at possibly making a air flow spotin the rear to allow air to travel beteen the two cabs and inside the foam box to help keep the air more conditioned..

Larry, maybe add a smaal fan that will move the air around behind the drawrs. You could use one like they use on enteranment centers.