Hi Sheri!
I'm so sorry that I didn't answer you sooner. I don't go on the site that often & I just saw a notification. Haven't had any luck on our ceiling lines, but are getting worse & much darker now. They are even on the slide-out ceilings & now going down the walls too. We were just discussing it with our mobile tech yesterday. He took some pics & said he would try to get in touch with Redwood & see what they say. But no one really knows what caused them. It could possibly be moisture in the roof or even mold, but like you, I think it's structural. I'm thinking seriously of writing Redwood a letter or giving them a call again & talking to a manager. We are very disappointed with how they just dismissed this problem the first time we called & sent them pictures of it. They really need to see it & analyze what's going on. If we get anything solved on this issue, I will gladly message you, but I think this is going to be a long process. Thanks!!

Fred & Danette

Hello there,

I came across your post regarding the dark lines on your RV ceiling and I have a similar issue.
I own a 2000 Holiday Rambler Admiral 34' that has black lines across the ceiling in the front and back (soft around the area) doesn't appear to be mold or the like . I have a feeling it is a structural issue but haven't had much luck searching on the Internet until I read your post.
I would really appreciate any advice/information you may have. I hope this isn't an imposition if so I apologize.

Hope you resolved your ceiling problem~

Thank you,

Sheri