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Old 12-18-2016, 10:47 AM   #1
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Lines showing after hosing down coach.

Took delivery last weekend and coach had salt on it, so I hosed it down this morning. It's 55 degrees, after some brutal cold, so I'm hoping the reason I'm seeing some lines, vertical and horizontal, is due to constuction, and condensation. Even if I wipe them clean, they show up, and it looks like they follow where studs might be. Maybe as a result of vacuum bonded walls???? I'm assuming if the weather didn't change so much....? New England...Mass, starting to wonder why I live here. Any thoughts?
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Old 12-18-2016, 10:59 AM   #2
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I can't offer any suggestions, but those lines do look pretty uniform. If this is a new unit, maybe take it to the dealer or show them pics and see what they say. May also want to contact Cardinal as well.
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Old 12-18-2016, 11:04 AM   #3
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Those lines are where the "studs" are located. They will disappear as it warms up.
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Old 12-18-2016, 11:06 AM   #4
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Those lines are where the "studs" are located. They will disappear as it warms up.
This. Mine doe the exact same thing.
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Old 12-18-2016, 11:21 AM   #5
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This. Mine doe the exact same thing.
Same here, the stud will retain the cold longer than the laminated wall.
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Old 12-18-2016, 11:32 AM   #6
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Good to hear, that it's probably the cold studs. Safe to say in "normal " weather, you don't see this?
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Old 12-18-2016, 11:36 AM   #7
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Good to hear, that it's probably the cold studs. Safe to say in "normal " weather, you don't see this?
You are correct
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Old 12-18-2016, 02:14 PM   #8
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Talking studs

All RVs do this because of the heat differential between the warm studs and cool outside temps....It would be nice to be able to see the studs on the inside when you want to hang something inside.....
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Old 12-18-2016, 03:46 PM   #9
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In addition to the pictures, take some measurements of the studs exact location. Should you want to mount something substantial, it will be easier if you know where the studs are.
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Old 12-18-2016, 04:35 PM   #10
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Like others have said. Heat difference between studs and outside wall. I have had 4 RV's and all did this in cooler weather.
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Old 12-18-2016, 05:07 PM   #11
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Originally Posted by Dylanfreak View Post
Took delivery last weekend and coach had salt on it, so I hosed it down this morning. It's 55 degrees, after some brutal cold, so I'm hoping the reason I'm seeing some lines, vertical and horizontal, is due to constuction, and condensation. Even if I wipe them clean, they show up, and it looks like they follow where studs might be. Maybe as a result of vacuum bonded walls???? I'm assuming if the weather didn't change so much....? New England...Mass, starting to wonder why I live here. Any thoughts?
I don't know about the lines but as to why you live there perhaps you like the taxes???
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Old 12-18-2016, 06:43 PM   #12
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In addition to the pictures, take some measurements of the studs exact location. Should you want to mount something substantial, it will be easier if you know where the studs are.

Absolutely a good idea to take those measurements or even put a small marker at the bottom or/and top to indicate where they are.


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Old 12-18-2016, 07:13 PM   #13
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Really good idea to take the measurements and mark the studs. We do that when building (our house, our children's houses). If you have a high enough resolution camera, just stretch a tape measure across the outside of the unit and photograph it so you can see the measurements and the stud outlines. It is pretty quick and with digital you can blow it up. You may have to do several shots for horizontal and vertical studs, but that, along with a stud finder will get you some pretty good accuracy. Just use a tape with good size numbers on it. We use it inside to mark TV mounting studs, etc when building, before putting up the drywall. It works and really helps.
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Old 12-18-2016, 07:49 PM   #14
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Originally Posted by Bob Vaughn View Post
All RVs do this because of the heat differential between the warm studs and cool outside temps....It would be nice to be able to see the studs on the inside when you want to hang something inside.....
Same thing on our CC 29RE

I drew up a sketch and marked the distances between from front to back...Use reference points like windows & doors etc Now you know where they are from inside...J
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Old 12-18-2016, 08:08 PM   #15
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First time I saw this I took pictures. For use as reference for stud locations, should I ever need them. Click image for larger version

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Old 12-18-2016, 08:56 PM   #16
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Aluminum studs. Normal in any condensation situation. My 2015 Silverback looks similar.

Go to the next FR factory FROG rally and take the factory tour. You will learn a lot. It's interesting to see frame; walls hung; frame and how and where tanks; heaters; furnace are mounted.

Also, even if you do not need to; at least practice a winterizing. Even if you just do the draining and use air.
There will come a time when you need to do this quickly. Trust me; 30 degrees and wind is no time to LEARN. There is much NOT to miss.
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Old 12-18-2016, 09:54 PM   #17
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Mine does this most every morning. Kind of handy if your into modding your trailer.
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Old 12-18-2016, 10:36 PM   #18
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Like the OP, I had no idea what was causing the lines to appear. Now I know, you learn something new everyday....
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