By chance working on another issue in an accessible part of my attic (measuring the second floor joist width) I happen to notice in a few spots yesterday some water drops periodically on the nails (which some had rust on them and others did not) through the decking. It was sporadic which ones had it and which ones did not. On the wood I notices a few spots that were dark much like mildew. there was one place that I could feel moisture on the decking, but not much. This section of attic is angled and on one side is the slope and the other is a wall that goes to a large upstairs room. Above this large room is the peak of the angle that meets a low sloping roof. the second floor ceiling and the peak/slope there is probably about 2 feet max space. The only way I can see this space is by moving the upstairs bathroom exhaust vent and sticking my head up. The slope that goes to the part of the attic I was in has gaps between the second floor celing insulation and the decking supposedly to allow air to move. Btw, the second floor roof is metal and other than gable vents on the sides the bathroom pipe vents there is no vents. There where before small box vents (similar to [url]http://www.owenscorning.com/around/ventilation/products.asp?ProdID=24[/url]). they were removed though as the metal roof installer said they were not doing much and they could cause leaks through the metal due to the slope being that steep. Obviously I was concerned. My first guess was that it was exhaust from a 1st floor bath that its vent goes to a plastic tube that runs up the center of the house to the in accessible part (about 11ft). The builders back in 1968 I suppose venting it to the attic was a good idea or something. So I spent hours trying to figure how I could rework the vent to somewhere else. After several tries of vents and such I gave up and put the old one back and I am calling the metal roofer to find out about adding an exahaust vent. However, I am not sure the exhaust is the culprit. Today I went into this area and there was no moisture at all. This time it was nice and dry. What also made me wonder if it was the exahaust vent is that in the inaccessible area when I peeked at it with flashlight and looked at where the vent should be coming up there is no mildew or moisture. FYI, the last shower in the downstairs bath was at 8am on Friday and I saw the moisture 11am on Sat. So now I am confused. I do know the area I was at has limited ventilation and it is above two bedrooms. What is odd is that I would assume there would be moisture and such in the place where the exhaust from the bath goes, but there is none. Is it possible the moisture goes up, goes down through the tight squeeze of the slope into this attic space? Or could it be bad ventilation. This attic spot is backward L shaped and its on the longer part of the L. Its on the shorter end that there is a single gable vent. I do have a few soffit vents, but they are not the best. Until 3 years ago there were no soffit vents. I guess my question is whether its possible moisture would travel from the top peak through the slope and collect? What other possibilities could there be to contribute to this? What should I look for? Thanks.

I have read through much of the forum and while I have found a lot of helpful information I do have a couple of questions: I am currently in the process of finishing my basement. Unfortunately, I have had some questions arise that I had not foreseen before starting (I've had differing opinions given). I have framed the entire basement, and have run electrical. I'm now starting on insulation installation. I have purchased R-13 with Kraft facing. I was planning on just using the Kraft facing as my only vapor barrier. I live in Northern Utah and have a very dry basement. The house is almost 4 years old. 1. Does my method seem sound, or should I install another vapor barrier over the Kraft facing? (Note: I really don't want to tear down my framing to install a vapor barrier against the concrete.) 2. Does electrical wiring go in front of or behind the insulation? 3a. I have stuffed R-13 into the areas behind the cross framing that some of the interior walls lead off of. I realize that the compression reduces the effectiveness of the insulation, but something is better than nothing, correct? 3b. Will the fact that the insulation is compressed directly against the concrete wall cause any problems? Thanks in advance for any help.