Fiberglass roof problem?

[JourneyWinn]

I own a 2002 Winnebago journey DL the coach is usually kept undercover but the last few months has been outside. I noticed a brown stain on the floor and upon further inspection it looks like there has been a leak coming out of one of the ceiling vents. I took off the vent cover and saw staining in the styrofoam stuff that is sprayed inside.
Anyone else have this issue? I will be getting on the roof for a closer inspection

[Mich F]

I would assume you have a problem with the caulking around the vent, not with the fiberglass roof.

[JourneyWinn]

It's coming from one of the ducted ceiling air vents

[Pusherman]

Originally Posted by JourneyWinn

I own a 2002 Winnebago journey DL the coach is usually kept undercover but the last few months has been outside. I noticed a brown stain on the floor and upon further inspection it looks like there has been a leak coming out of one of the ceiling vents. I took off the vent cover and saw staining in the styrofoam stuff that is sprayed inside.
Anyone else have this issue? I will be getting on the roof for a closer inspection

I have seen this in 2 different 2005 Winnebago Journey's where the Fantastic roof vent flange on the outside of the coach develops a crack in the vertical flange underneath the vent cover. The crack continues down to the horizontal part of the flange on the roof and then a leak develops around the roof vent.

Go up on the roof, open the roof vent, and inspect the vertical flanges. If it has a crack, it needs to be replaced. Caulk will not fix it. Note: You can order the vent flange separate from the rest of the vent assembly. Maybe $40 plus shipping.

[JourneyWinn]

Thanks Pusherman for the info but it's not coming from the roof vent. The leak is from inside 1 of the ceiling vents where air comes out when using the a/c
There is a brown stain up inside that air vent in the blown in insulation which then drips out of the vent / am I making any sense?

[dataguru]

Is it possible it's condensation? My class c and my a had a lot of condensation in really hot weather.

thanks,
DAn

[mickey53usa]

Could your roof top air conditioners have a plugged drain and the water is leaking down into your duct work? The brown coloring might just be from accumul;ated dust.

[JourneyWinn]

To mickey53USA - I don't have roof top air - basement heat pump

[JourneyWinn]

No condensation -dry as a bone inside

[Patrol 65]

Check all of your roof intrusions. I had a similar leak coming from the skylight in back traveling all the way to the right front ceiling vent.

[JourneyWinn]

I will be taking a serious look around this weekend - thanks everyone for your input!