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I built an addition 2 years ago onto my own home. Single story, cathedral ceilings, wrapped in roofing felt and vinyl sided. I have begun to notice faint dark lines on the walls where the studs are. Home is insulated with fiberglass then drywalled. The only thing that i think i should have done different is to wrap the inside wall with vapor barrier. But maybe I’m wrong. I’m a remodeler by trade and havent had this happen before. I’m sure someone out there has an answer for me. Thanks
Todd
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do you heat with a wood stove?
*Todd, Here's a link to a previous discussion. Conclusion? Thermal bleed-through resulting in slight amount of condensate on interior wall, interior pollution (dust, dirt, nicotine, wood fire smoke, etc) settles on condensate and forms the stain.
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I built an addition 2 years ago onto my own home. Single story, cathedral ceilings, wrapped in roofing felt and vinyl sided. I have begun to notice faint dark lines on the walls where the studs are. Home is insulated with fiberglass then drywalled. The only thing that i think i should have done different is to wrap the inside wall with vapor barrier. But maybe I'm wrong. I'm a remodeler by trade and havent had this happen before. I'm sure someone out there has an answer for me. Thanks
Todd