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Bubbling on Nuevo external wall

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Bubbling on Nuevo external wall Empty Bubbling on Nuevo external wall

Post by chromachris Fri 15 Sep 2023, 3:44 pm

Hi there fellow Nuevo owners. Has anyone else come across this vertical bubbling on the outside wall? It seems that the metal has come away from the interior material, hopefully the attached photo shows it. Is it anything to worry about? Many thanks.
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Post by Paulmold Fri 15 Sep 2023, 4:06 pm

No photo, this may help....

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Post by chromachris Sat 16 Sep 2023, 8:05 am

Many thanks Paul, it seems you cant post photos if you are accessing the site on iphone?
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Post by chromachris Sat 16 Sep 2023, 8:08 am

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Post by Cymro Sat 16 Sep 2023, 8:30 am

Ah. That's different from my outbreak of bubbles, on the outside rear wall. Mine were like a rash of pimples, some of which burst. They were caused by water droplets in the paint airline, and in a hard frost the droplets froze beneath the paint, creating the pimples.

Yours would seem to be different - on large blister extending a foot or more down the sidewall. Has it occurred recently? As it's immediately underneath the window, my suspicion would be that the window seal has leaked, allowing water to penetrate between the GRP (or metal) outside skin, and the inside frame to which it should be fixed. 

As to whether you should be worried, my inclination would be to take it to a motorhome dealer for an assessment.

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Post by chromachris Sat 16 Sep 2023, 10:05 am

Many thanks for that. I have now discovered that this bubbling is directly adjacent to to the Whale outlet. On the inside of the mh there is a black box which I think contains the solenoid for the Whale water pump. The mh has been sat connected to ehu, and this box is very hot to the touch  [You must be registered and logged in to see this image.]  The attached picture shows the location of the box. So perhaps the heat from the box is causing the bubbling on the outside? Like you say I think it best to get it looked at by a mh dealer.[You must be registered and logged in to see this link.]
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