Vent Question. Compact Jr - Fiberglass RV

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Old 07-03-2014, 09:51 PM   #1
Seldomseensmith's Avatar
Name: David
Trailer: Hunter
New Mexico
Posts: 81
Vent Question. Compact Jr

The vent cut out above my boys head. Does anyone with a Compact Jr have any input into the weatherproofness of these? The thing he is leaning on is kids bed and ide like it to stay dry.

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Old 07-10-2014, 10:00 AM   #2
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Steve Hilby's Avatar
Trailer: Compact Jr
Posts: 259
If the vent is new and its seals are not damaged, it seals pretty well. If yours is old and tired, you might want to replace it; new vents are not particularly expensive. Use butyl tape to seal it, or Donna will give you a talking-to.

However, several Compact Jr owners have reported that the roof of the popup section, which should have a slight upward arch, sags; and of course, Murphy's Law says that the low point of the sag occurs at the vent, so that water puddles around the vent and gives its sealing properties a real workout.
Several owners have added internal ribs to the popup to restore the arch, either bolted-in or fiberglassed-in. Restoring the arch raises the vent to the high point of the roof and water drains away from it rather than toward it. It looks as though you're doing a considerable amount of work on yours, and you may want to take a look at the popup roof and see if you ought to do something similar.
Some searching on this forum ought to turn up some pictures of fixes; I did my sister's Compact Jr using electrical conduit as ribs, and it's shown in one of my "winter fixup" threads.

Edit: Here are a couple threads discussing the subject:

New Modification To C-J

Compact Jr popup fiberglass
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