Leak - Page 2 - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-19-2011, 08:23 AM   #15
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
More questions of course.

Real tempted to remove and reinstall the entire thing.

Questions:

How is the fan assenbly held to the roof of the Casita?
Screws, bolts and nuts, rivits?

Once the fasteners are removed, what is the best way to pry the fan away from that ever is used (gasket) for it to sit on. Without breaking a flange.

Once properly scrapped free of sealer, what type of solvent is used to remove residue of the sealer (gasket)?

Looking from inside, I noticed that the rubber gasket, that the smoked cover closes onto, has a gap. As though it has shrunk over time and the two ends no longer touch. It is on the front side of the lip. Is this normal, or should a new one be ordered?

If I should decide to reseal the top portion rather than removing and redoing. What solvent removes residue left from the silicone and other sealers that may be there?

Thanks,
Kip
__________________

__________________
Kip in Ga. is offline   Reply With Quote
Old 01-19-2011, 08:58 AM   #16
Senior Member
 
cpaharley2008's Avatar
 
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,398
Registry
In a way we are similar to a dentist. He needs to remove the decay completely before putting in a new filling. I'd remove the entire unit and start from scratch. You may want to upgrade your entire fan unit or at least replace the gasket and or cover.
__________________

__________________
cpaharley2008 is offline   Reply With Quote
Old 01-19-2011, 09:45 AM   #17
Senior Member
 
Chris Z's Avatar
 
Trailer: 16 Scamp, 17 Casita, 21Bigfoot now
Posts: 412
Registry
A comment and then a question:
I had a small leak around my fantastic fan also. Hoping for the best, I re-applied some silicone. Didn't work. Installed Max-air cover over fan and alls well.
Question: The 2 inch flange on the inside is held on with 4 screws in the corners. What are those screws going into? Seems like maybe the rug only and don't want to stay put. Is that all they are screwing into?
__________________
Chris Z is offline   Reply With Quote
Old 01-19-2011, 09:56 AM   #18
Senior Member
 
cpaharley2008's Avatar
 
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,398
Registry
If you have a leak, it will be around the flange where the vent sits on the roof. The MaxxAir attaches to the vent itself, not the flange and should have no effect on leaks other than additional weight compressing the gasket. Here is a link for the install
FanTastic Vent - How To Install
as can be seen, there is a gasket on the outside upon which the fan seals itself to the roof. The inside is just trim hiding the hole. The 4 screws do not penetrate the roof from the inside.
__________________
cpaharley2008 is offline   Reply With Quote
Old 01-20-2011, 01:38 AM   #19
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Quote:
Originally Posted by Chris Z View Post
A comment and then a question:
I had a small leak around my fantastic fan also. Hoping for the best, I re-applied some silicone. Didn't work. Installed Max-air cover over fan and alls well.
Question: The 2 inch flange on the inside is held on with 4 screws in the corners. What are those screws going into? Seems like maybe the rug only and don't want to stay put. Is that all they are screwing into?
I'm in the process of taking mine completely apart. Piece by piece. Lots of bits and pieces. Lots and lots of pieces.

That flange is part of a larger box that is held in place by 4 screws. That box houses some switches, and other electrical gadgets you can see through the screen. The screws are not on the extreme outward corners of the flange. They are more inward. I don't recall if you can see them with the screen in place. My inside trim has holes also, but there are no screws in them. They only serve to drip the water that is seeping in from outside.

Kip
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-20-2011, 02:01 AM   #20
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Quote:
Originally Posted by cpaharley2008 View Post
In a way we are similar to a dentist. He needs to remove the decay completely before putting in a new filling. I'd remove the entire unit and start from scratch. You may want to upgrade your entire fan unit or at least replace the gasket and or cover.
Got this thing pretty much in pieces now. The only things left in place is the housing that sticks through the roof opening. The smoke cover is still on it. Removed everything in hopes of seeing where the water is coming in.

Here is a problem. There are approximately 16 rivits holding it to the roof.
It appears that the rivits are expanded into wood. It appears that they drilled the holes into the roof and into a wood frame around the opening.
Then inserted the rivits and popped them into place.

I can drill the heads off the rivits but the rivit bodies will still be in place and not likely going to be pulled out as they are expanded in the wood.
If that is true, a lot of new holes would need to be drilled in the outside flange and roof.

Thanks for the link!

KIp
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-20-2011, 06:27 AM   #21
Senior Member
 
cpaharley2008's Avatar
 
Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
Pennsylvania
Posts: 6,398
Registry
Quote:
Originally Posted by Kip in Ga. View Post
Got this thing pretty much in pieces now. The only things left in place is the housing that sticks through the roof opening. The smoke cover is still on it. Removed everything in hopes of seeing where the water is coming in.

Here is a problem. There are approximately 16 rivits holding it to the roof.
It appears that the rivits are expanded into wood. It appears that they drilled the holes into the roof and into a wood frame around the opening.
Then inserted the rivits and popped them into place.

I can drill the heads off the rivits but the rivit bodies will still be in place and not likely going to be pulled out as they are expanded in the wood.
If that is true, a lot of new holes would need to be drilled in the outside flange and roof.

Thanks for the link!

KIp
Over on the Airstream forums they routinely replace rivets with new ones, albeit bigger ones perhaps but no new holes are drilled. If you drilled the rivet out and used the existing hole with another rivet? I did not think that rivets expanded out but just at each end or head, so the hole diameter should be the same you may need a washer on the inside head if it compressed the wood. I thought the new fan came with screws to screw into the roof? Maybe you could use bolts that the trim will cover inside?
__________________
cpaharley2008 is offline   Reply With Quote
Old 01-20-2011, 09:15 AM   #22
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Quote:
Originally Posted by cpaharley2008 View Post
Over on the Airstream forums they routinely replace rivets with new ones, albeit bigger ones perhaps but no new holes are drilled. If you drilled the rivet out and used the existing hole with another rivet? I did not think that rivets expanded out but just at each end or head, so the hole diameter should be the same you may need a washer on the inside head if it compressed the wood. I thought the new fan came with screws to screw into the roof? Maybe you could use bolts that the trim will cover inside?
Many moon ago we purchased a used Argosy trailer by Airstream. Had no experience with Rivits until then. With that type of trailer I learned pretty fast. We've had aluminum boats requiring repairs and additions and I've built stuff using rivits. They work great when used properly.

Realizing that you know about rivits, so this info is just for anyone that may not know how a "POP" rivit works.
A rivit is essentually 2 parts. A hollow tube with a flat head on one end, and a solid shaft with a ball on one end. The solid shaft goes through the hollow tube with the ball at the far end. The rivit tool pushes against the head and draws the shaft and ball through the tube which expands it.
Then the ball reaches the back side of the material the rivit is in, and the tool keeps pulling. The shaft eventually "POPS" off the ball. Leaving the rivit head on one side and the shaft that was expanded by the ball on the other. When done properly it makes a tight connection that isn't likely to work loose like a screw might.

Of course the traditional method of a good rivit job is for the hole to be just big enough for the hollow rivit body body to slip through. The rivit needs to be long enough to slip through both pieces of material with a little sticking through for the ball to expand. . The rivit tool pulls the shaft with the built on ball through the hollow tube, expanding the tube on the back side until it is too large to slip through the material and tight against it. The shaft breaks off leaving the ball inside the hollow tube and against the back side of the job. If the material is soft, tiny washers can be used for the ball to push against.

To remove a rivit. The head can be drilled until it breaks loose from the hollow tube. Then the rivit can be pushed through and it falls out the back side. Leaving the hole ready for another rivit if desired.

Pictures 1-4 of the link FanTastic Vent - How To Install shows the wood box built to accept the vent/fan on a conventional trailer. After removing all the trim and stuff inside the trailer I see wood. Can't see much as the Rat Fur is covering it. Apparently that box on the Casitas is glued to the underside of the fiberglass "roof", and serves the same function of strength and necessary thickness as on a conventional trailer.

It "Appears" that Casita chose to drill holes through the FG and into the wood. Inserted rivits and expanded the ball/tube into the wood, rather than going all the way through and tightening from the back side. If that is the case, then removing the rivit heads will leave the tubes in the wood with nowhere to push them to because the ball is larger than the hole. They likely won't pull out because the ball has created a cavern bigger than the hole and it won't pull through. Even being lucky enough to drill exactly in the middle of the shaft, as the bit bites, it will likely cause the shaft to spin in place rather than just going away. But, most likely, the drill bit would slip off the tube and drill beside it. Creating a hole that is not in alignment with the holes in the outer fan flange.

Choice are limited, but the most likely would be to drill new holes for everything and use screws. Of course that would leave 16 rivit holes and 16 screw heads to seal.

If real lucky the wood frame would have a grove cut full lungth. A piece of metal glued on top of the wood and the metal glued to the roof. Hole drilled from the top just deep enough to penetrate through the metal, ahd the rivit could be removed in the traditional manor. Just got a feeling, that ain't going to happen.

So trying desperately to figure exactly where the water is seeping in and it not be necessary to remove the whole thing. . I did find something interesting. It looks as though the dome has been replaced. Something may have gone wrong there. Also found that the excessive silicone is all the way up to the dome hinge and touching it in several places. Don't know if that could cause water to stand there long enough to "wick" through the hinge. I'm cutting the excess away as a first measure. Then I'm going to build a dam around the front of the fan and fill it with water to try and establish if the water is in fact seeping under the front sealers. If not, It is going to rain on it for a while from the water hose.

Hopefully with me inside and someone else "raining" I can spot the leak.

Got to find out what chemical will remove silicone residue and investigate the Dicor and Eternabond products. Wishful thinking?

Thanks,
Kip
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-20-2011, 09:46 AM   #23
Senior Member
 
Carol H's Avatar
 
Name: Carol
Trailer: 22' Airstream Formerly 16' Scamp
British Columbia
Posts: 11,731
Registry
Kip when I install the Fantastic fan on my Scamp the rivits only went through from the top into the fiberglass - no wood. I ended up making simple wood trim to match the other escape hatch on the trailer and that is just attached the fan with screws - the screws do not go into the roof on mine.

Sounds like on your trailer they added extra wood on the underside of the Fiberglass - if thats the case and you want to replace as was, can you not just make another piece of wood to replace the one they used so it takes the rescrewing? -if im reading this correctly it is covered so it doesnt need to be a real good match.
__________________
Carol H is offline   Reply With Quote
Old 01-21-2011, 06:27 AM   #24
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Quote:
Originally Posted by Carol H View Post
Kip when I install the Fantastic fan on my Scamp the rivits only went through from the top into the fiberglass - no wood. I ended up making simple wood trim to match the other escape hatch on the trailer and that is just attached the fan with screws - the screws do not go into the roof on mine.

Sounds like on your trailer they added extra wood on the underside of the Fiberglass - if thats the case and you want to replace as was, can you not just make another piece of wood to replace the one they used so it takes the rescrewing? -if im reading this correctly it is covered so it doesnt need to be a real good match.
Carol,

Thanks you your reply. Yesterday afternoon (Thursday) I pealed back enough rat fur to get a better look, and brought in a better light. And there it was! The bottom end of a rivit.

What I thought was wood turned out to be brownish stained rough tectured fiberglass. Appears my fan was installed the same as yours. No wood!

Now I'm comfortable about drilling out the rivits, removing the fan housing, and doing the job correctly.

Also, due to the other post I know what to use top side!

Thanks to everyone.

Kip
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-21-2011, 06:44 AM   #25
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Quote:
Originally Posted by Kip in Ga. View Post
I'm in the process of taking mine completely apart. Piece by piece. Lots of bits and pieces. Lots and lots of pieces.

That flange is part of a larger box that is held in place by 4 screws. That box houses some switches, and other electrical gadgets you can see through the screen. The screws are not on the extreme outward corners of the flange. They are more inward. I don't recall if you can see them with the screen in place. My inside trim has holes also, but there are no screws in them. They only serve to drip the water that is seeping in from outside.

Kip
Took another look at how the interior trim piece is attached to the fan housing. Mine was attached with rivits. Can't see the attachment points until the center section's 4 screws are removed and the center dropped down. The center section is the part that contains the various switches and electrical components.

The trim was not attached to the roof. in any manner.

Kip
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-21-2011, 07:36 AM   #26
Senior Member
 
Davie B's Avatar
 
Trailer: Lite House
Posts: 230
Registry
Hey Kip. I had a very similar situation. In my case, a previous "fixer" had used both silicone goo and butyl tape. I contacted the folks at fantastic fan for advice. They provided excellent advice and a new installation kit for my fan.

I ended up removing everything, scraping and cleaning the fan parts and the trailer shell. Based on advice from the very nice fantastic fan folks, I stiffened the roof by epoxying strips of plywood around the roof opening on the inside. The strips are about an inch wide and are 1/4 plywood coated on all sides with epoxy prior to being glued in place.

The fan was installed using the gasket supplied with the install kit. The kit also includes a packet of silicone "oil" which coats both sides of the gasket. I fastened the fan using mostly the screws supplied with the kit with the addition of bolts with lock washers and locktite at the corners and in the middle of each side.

With the rat fur was glued back in place, the installation looks good and has remained dry through major Florida monsoons.

Your mileage may vary.
__________________
Davie B is offline   Reply With Quote
Old 01-22-2011, 05:13 AM   #27
Senior Member
 
Kip in Ga.'s Avatar
 
Name: Kip
Trailer: 2003 Casita 17' SD Deluxe, Towed by '09 Honda Ridgeline.
Georgia
Posts: 459
Hey Davie,

Thanks for the reply. Called Fantastic Fan !

They are sending a gasket. Hopefully it will be a kit such as you got.

What is the purpose of the Silicon Oil?

What did you use to clean the residue from the goo that was on your parts?

What did you use to glue the rat fur back in place?

Thanks,
Kip
__________________
Kip in Ga. is offline   Reply With Quote
Old 01-22-2011, 06:02 AM   #28
Senior Member
 
Davie B's Avatar
 
Trailer: Lite House
Posts: 230
Registry
Yes. The parts were sent without charge. I used a scraper, elbow grease and acetone to clean the trailer. The silicone oil, I assume, fills the any small gaps between the gasket and the trailer. I used 3M trim adhesive to glue the insulation (foil bubble wrap) to the fiberglass and the rat fur to the insulation.

Good luck with the repair.
__________________

__________________
Davie B is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Leak christineb Problem Solving | Owners Helping Owners 11 12-02-2011 06:49 PM
Leak? cyndi H Problem Solving | Owners Helping Owners 5 11-09-2009 01:07 AM
Leak! Help! BOBSMITH Problem Solving | Owners Helping Owners 7 10-03-2008 12:38 AM
Need help with leak Brenda Ferrell Problem Solving | Owners Helping Owners 7 01-01-2008 05:20 PM
A/C leak? Linda&Dale Problem Solving | Owners Helping Owners 7 03-11-2007 05:50 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:01 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.