Mysterious, impossible leak! - Fiberglass RV
Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-22-2021, 11:04 AM   #1
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
Mysterious, impossible leak!

After redoing my entire 74 Trillium, it seems there is now suddenly a new leak. Water will pool on the seat, coming from Behind the insulation and dripping onto the seat.

I have done:
-The window was just recently resealed with butyl tape.
-The wood around the window never feels damp at all.
-The marine headliner covering the reflectix insulation never has any water dripping down it.
-All screws on the window were double checked to make sure they were tightened.
-There is no water entering by the read headlight or the small runner light.
-I caulked the rivets in the belly band, still leaked.
-Removed the belly band, it is now fiberglassed over with epoxy+glass mat, covered with fiberglass bondo. Shockingly, the belly band gap was already filled in when i took it off! So I thought it was just the rivet holes, many missing, that was the cause. The leak is muchhh lessened now, as I rightfully assumed most was from the belly band holes. But it is still dripping onto the seat.
-Did water test with water below the belly band. Still leaks.
-Ripped up the insulation to about 6" from the seat. It appears to only be damp about 3" up. Fiberglassed the crap out of the wall 6"above the seat, and 6" below the seat, because i'm about to set the camper on fire and I'm out of ideas.

Is it possible that in some insane way water is leaking THROUGH the wall? There are no holes on the outside, I just sanded and painted it weeks ago. There are no visible cracks or anything to indicate a spot for water to enter. The water appears to enter the camper wherever on earth it is coming from, moves down the wall Behind the insulation, drips out onto the seat, and along the wall below in the cubby, on the pontoon, on the floor.

Could the seat pull away from the wall and cause some stress cracks? Something has to give. I'm insistent on solving this.
miarosa is offline   Reply With Quote
Old 02-22-2021, 11:44 AM   #2
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
I believe its the same leak. The water just runs from above the seat, onto the seat, as well as behind the actual fiberglass bench and down into the pontoon. My headliner is flush with the seat, insulation stops at the top of it. so possibly why it can go both places. The seat is fiberglassed to the shell in some parts, but there is definitely a 1/8-1/4" gap from the seat lip vs the shell wall. We only have one water hatch, which is far away from the point of this leak and has shown no leaking. The lights show no sign of leaking. Maybe it is pinhole leaks, but I feel that would have been evident on the gel coat when i sanded it, and now seen in the paint.

The belly band did not have the metal plates removed. The gap was sealed with what looked like fiberglass epoxy resin. I fiberglass matt'ed the entire belly bad, double layered over the rivets- the tops were removed. Then fiberglass short hair bondo was layered over that. I'm in the process of smoothing it out, as this was a much different task than I anticipated with just filling the gap, and either leaving it just painted, or using automotive trim- to be decided. There is no silicone as I removed the pound of it someone had put under the belly band prior. I have fiberglassed a few holes, and some large, in this trailer. None of them leak.

I feel like I'm going crazy Lol I just don't want my camper to leak.
miarosa is offline   Reply With Quote
Old 02-22-2021, 01:31 PM   #3
Senior Member
 
John in Michigan's Avatar
 
Name: John
Trailer: 1979 Boler 1700
Michigan
Posts: 1,819
Registry
We spent 3 years finding and fixing all of the leaks in our Trillium 4500. We would fix a leak or two by systematically testing with a garden hose before and after repair. Then later find another leak while camping in a heavy rainstorm.
John in Michigan is offline   Reply With Quote
Old 02-22-2021, 01:41 PM   #4
Senior Member
 
John in Michigan's Avatar
 
Name: John
Trailer: 1979 Boler 1700
Michigan
Posts: 1,819
Registry
If you have leak tested the belly band, every through hull fitting such as electrical port and fresh and grey water ports, behind every window flange, etc, here is another thing to check:

I found water entering at factory seams and joints in the aluminum window frames. I have fixed these leaks with sealant.
John in Michigan is offline   Reply With Quote
Old 02-22-2021, 01:43 PM   #5
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
Quote:
Originally Posted by John in Michigan View Post
If you have leak tested the belly band, every through hull fitting such as electrical port and fresh and grey water ports, behind every window flange, etc, here is another thing to check:

I found water entering at factory seams and joints in the aluminum window frames. I have fixed these leaks with sealant.
I have not looked very hard at the inside of my window frames. When pulled for resealing, everything seemed good with them. But i'm for sure about to go check them all now. Thanks for the suggestion!
miarosa is offline   Reply With Quote
Old 02-22-2021, 01:43 PM   #6
Senior Member
 
John in Michigan's Avatar
 
Name: John
Trailer: 1979 Boler 1700
Michigan
Posts: 1,819
Registry
I found that with difficult to trace leaks, garden hose testing must be done with someone inside watching closely while the person outside sprays.
John in Michigan is offline   Reply With Quote
Old 02-22-2021, 01:55 PM   #7
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,358
Send a message via Yahoo to Darwin Maring
do you have a TV antenna?
Darwin Maring is offline   Reply With Quote
Old 02-22-2021, 02:29 PM   #8
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
Quote:
Originally Posted by Darwin Maring View Post
do you have a TV antenna?
nope
miarosa is offline   Reply With Quote
Old 02-22-2021, 06:12 PM   #9
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,358
Send a message via Yahoo to Darwin Maring
Lift one side up higher so the water runs off the other side. If U still have the leak, do it with the other side. Then lift the front up higher so it runs off the back. This might give you a starting point which side the water is coming in from. Good Luck
Darwin Maring is offline   Reply With Quote
Old 02-24-2021, 12:34 PM   #10
Senior Member
 
Name: Claire
Trailer: 1978 Trillium 4500
British Columbia
Posts: 303
Registry
You have not mentioned checking the roof. Our roof vent was the cause of one of our leaks. The other place to check is your awning rail. It is riveted in place.



Good luck. Chasing water is never easy because it never stays at the point of entry.
__________________
Island Bolers and Friends on Facebook
Island Claire is offline   Reply With Quote
Old 02-24-2021, 12:55 PM   #11
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
No awning. I can't figure out how it'd be the vent, it's quite far from the issue, vent is never wet, no drips on floor, no wet by walls closest to vent, ect.

I believe it was part belly band, and part window frame itself.
miarosa is offline   Reply With Quote
Old 02-24-2021, 01:22 PM   #12
Senior Member
 
Name: Claire
Trailer: 1978 Trillium 4500
British Columbia
Posts: 303
Registry
The water ran behind our ensolite down the wall and onto the bench.
__________________
Island Bolers and Friends on Facebook
Island Claire is offline   Reply With Quote
Old 02-24-2021, 01:32 PM   #13
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
Quote:
Originally Posted by Island Claire View Post
The water ran behind our ensolite down the wall and onto the bench.
From the vent all the way behind the kitchen area to the bed area?
Luckily, I have no wetness or trace of leaks there. The vent was replaced and resealed at the same time as the windows, including sealant on the roof.
miarosa is offline   Reply With Quote
Old 02-25-2021, 09:44 AM   #14
Member
 
TZBrown's Avatar
 
Name: Tom
Trailer: Escape 21 and Northern Lite truck camper 2014 2500 HD Duramax
Michigan
Posts: 70
Here is a very expensive way to positive pressure your unit, and then bubble test for leaks. https://rvleaks.com/sealtech-430-r-rv-leak-tester/

With a "large bit" of DIY and a furnace squirrel cage fan you can somewhat duplicate the machine.

Water leaks are a real pain to pinpoint
__________________
Life's A Journey: It's not to arrive safely at the grave in a well preserved body, But rather to skid in sideways, totally worn out, shouting, Woo Hoo!....What a Ride!
https://www.flickr.com/photos/56844387@N04/albums
https://www.youtube.com/user/TZBrown01/videos
TZBrown is offline   Reply With Quote
Old 02-25-2021, 10:20 AM   #15
Senior Member
 
Name: Darwin
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 3,358
Send a message via Yahoo to Darwin Maring
TZ Brown - You have the answer.
Darwin Maring is offline   Reply With Quote
Old 02-27-2021, 11:30 AM   #16
Senior Member
 
mszabo's Avatar
 
Name: Mike
Trailer: 1986 Bigfoot FT20
Michigan
Posts: 942
Smoke test.
mszabo is offline   Reply With Quote
Old 02-27-2021, 11:40 AM   #17
Senior Member
 
Name: George
Trailer: Trillium
Ontario
Posts: 205
Registry
Remember that these trailers are over 45 years old and were probably not designed to last that long, which is why we have to maintain them probably as long as we own them. Every time we take them on the road, the bodies move because they have no frame. In my case, I have the T4500 and it has a lot of extra drawers and other optional things installed, all of which reduced the integral strength of the vehicle. Also, I think that the walls and especially corners were not as strong (well built) as earlier models. I personally don't believe that the wood they used for the window frames were strong enough to last 45 years. I had mine all sealed 5 years ago but found a new leak on the front window area just recently. A few years ago, I found a really nice Airstream that was for sale near the Ocean and when I went to buy it, found that the salty air had caused all the rivets to decay...
jokra is offline   Reply With Quote
Old 02-27-2021, 05:33 PM   #18
Junior Member
 
Name: Ray
Trailer: Vanguard
British Columbia
Posts: 9
Quote:
Originally Posted by miarosa View Post
After redoing my entire 74 Trillium, it seems there is now suddenly a new leak. Water will pool on the seat, coming from Behind the insulation and dripping onto the seat.

I have done:
-The window was just recently resealed with butyl tape.
-The wood around the window never feels damp at all.
-The marine headliner covering the reflectix insulation never has any water dripping down it.
-All screws on the window were double checked to make sure they were tightened.
-There is no water entering by the read headlight or the small runner light.
-I caulked the rivets in the belly band, still leaked.
-Removed the belly band, it is now fiberglassed over with epoxy+glass mat, covered with fiberglass bondo. Shockingly, the belly band gap was already filled in when i took it off! So I thought it was just the rivet holes, many missing, that was the cause. The leak is muchhh lessened now, as I rightfully assumed most was from the belly band holes. But it is still dripping onto the seat.
-Did water test with water below the belly band. Still leaks.
-Ripped up the insulation to about 6" from the seat. It appears to only be damp about 3" up. Fiberglassed the crap out of the wall 6"above the seat, and 6" below the seat, because i'm about to set the camper on fire and I'm out of ideas.

Is it possible that in some insane way water is leaking THROUGH the wall? There are no holes on the outside, I just sanded and painted it weeks ago. There are no visible cracks or anything to indicate a spot for water to enter. The water appears to enter the camper wherever on earth it is coming from, moves down the wall Behind the insulation, drips out onto the seat, and along the wall below in the cubby, on the pontoon, on the floor.

Could the seat pull away from the wall and cause some stress cracks? Something has to give. I'm insistent on solving this.
*********


Not familiar with your type of trailer, but have renoed a few trailers, campers, and camper vans.

Does your trailer have a roof vent? Many people replace the seal with butyl and new screws. Not good enough ... Unless you cover the edge of the flange and all screws with a rubber compound or other product, water will seep under the flange and run along the ceiling to the lowest side and down the wall. All my units have had this problem when I bought them.
matthfam is offline   Reply With Quote
Old 02-28-2021, 08:06 AM   #19
Member
 
Name: Ryann
Trailer: 1974 Trillium 1300
FL
Posts: 77
Quote:
Originally Posted by matthfam View Post
*********


Not familiar with your type of trailer, but have renoed a few trailers, campers, and camper vans.

Does your trailer have a roof vent? Many people replace the seal with butyl and new screws. Not good enough ... Unless you cover the edge of the flange and all screws with a rubber compound or other product, water will seep under the flange and run along the ceiling to the lowest side and down the wall. All my units have had this problem when I bought them.
yup. its sealed on the top and butyl taped. doesn't leak.
miarosa is offline   Reply With Quote
Old 03-01-2021, 03:33 PM   #20
Member
 
Name: Tom
Trailer: Amerigo
Wisconsin
Posts: 37
I had the heck of a time finding a leak in a motorhome rear fiberglass cap that we had. I had previously redone the roof and all the caulking up top and I still had a leak. It turned out to only leak while driving in the rain. The clearance lights had a bead of caulk on the sides and top. The suction/ vacuum created while driving would draw water up from below the lights. I replaced the lights with new gaskets behind and no more leaks!
bigangelman 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
Mysterious Moving Chicken Feeder Cyndi B. General Chat 13 07-12-2013 05:51 PM
Mysterious Scamp Leak TLC Problem Solving | Owners Helping Owners 21 01-02-2012 06:26 PM
Mysterious leaks in Trillium 1300...maybe solved David Swinnard Problem Solving | Owners Helping Owners 3 06-11-2009 08:40 AM

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

Reviews provided by


All times are GMT -6. The time now is 01:23 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.