Hello fellow gardenwebbers. I have a roofing/construction dilemma...

(X-posted in Building a House forum)

We started building our home in NW Oregon this past May, and are just about to the end of it. Cabinets are going in, countertops going on, etc... Well, DH went up into the attic today to see what kind of insulation was installed, and there found mold growing on the underside of the roof. Like puffy, white/grey mounds of mold... He also said there was water slowly dripping from some of the roofing nails.

Needless to say, I'm just horrified at this. We were starting to pack our items from our townhouse, getting ready to move...

So, calling all experts (or just anyone with some ideas): What should we do? Our builder is a reputable, stand-up guy who I know will do what it takes to make it right (Holmes on Homes, anyone? :) ). Has anyone ever had this happen before?

I'm sick to my stomach with this discovery... :(