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Old 11-18-2010, 09:28 AM   #1
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Re-Sealing RV/TT windows...

My family has a 2006 Jayco 29FBS. Unknown to me, this TT was built with "Dry Fit" windows. Like many other brands of RV/TT windows, a sponge / rubber gasket is used between the trailer's siding and its Window's inner lip. Vision foam rubber being sandwiched between 2 hard materials. This stuff works in the short term but after 2+ years, it starts to leak. And, windows leak behind the windows / between its walls - where it cannot be seen from the outside. Before your TT's "Dry Fit" windows start to leak, do get them re-sealed. Re-Sealed the proper "old school" way - using soft putty.

Last summer, I removed 2 windows each weekend (or, 1 x windows a day). I simply removed the window, took a putty scraper and removed this foam / rubber seal, and re-sealed each window using soft putty "old school" method. During its 11 window re-sealing task, I was surprised to see 3 of the windows were already leaking. And 1 window was leaking really bad. Saved it "just in time". If I waited 1 more year, its inner wall would have been rotted out.

For re-sealing instructions, I cloned instructions within:



Note: This movie clip shows removing old soft putty and replacing with newer soft putty. Same removal / replace sealer tasks are used to remove the factory foam / rubber sealer of "dry fit" RV/TT windows.


If your RV/TT is older then 2+ years and have factory "dry fit" windows, I'd recommend re-sealing your windows with "soft putty" sealer. This easy DIY maintenance task worked great on our 2006 Jayco. Just "take your time" and do 2 windows each weekend.

Hope this helps others...

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Old 11-18-2010, 09:48 AM   #2
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Very informative. Isn't it nice that there are folks out there who post stuff like this on youtube? Thanks for sharing Spike
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Old 12-14-2010, 06:12 PM   #3
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Some good information there...

Hopefully I don't have to reseal and windows for at least a few years... I want to have some fun with the TT before I have to turn wrenches or screws...
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Old 12-14-2010, 08:26 PM   #4
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I would recommend using butyl rubber tape. Same labor as "soft putty" tape, but has a much longer life. It is available in black and also an off white. Thanks for the information on sealing windows.

I waited to long on a previous fifth wheel and the wall started to rot! Had to replace a part of the interior wall panel and bracing. Do not wait to see damage before you reseal the windows. To late then!

As you stated, it is really easy to accomplish. It is best to have a second person to support the window outside after the inside trim ring is removed. Otherwise, you may need a dust pan to sweep up the broken glass, after the window falls out. I used a battery operated drill motor with a torque setting to remove and install the screws.
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Old 12-14-2010, 09:21 PM   #5
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I would recommend using butyl rubber tape. Same labor as "soft putty" tape, but has a much longer life. It is available in black and also an off white. Thanks for the information on sealing windows.

I waited to long on a previous fifth wheel and the wall started to rot! Had to replace a part of the interior wall panel and bracing. Do not wait to see damage before you reseal the windows. To late then!

As you stated, it is really easy to accomplish. It is best to have a second person to support the window outside after the inside trim ring is removed. Otherwise, you may need a dust pan to sweep up the broken glass, after the window falls out. I used a battery operated drill motor with a torque setting to remove and install the screws.
Just curious, how old was the 5'er when the seals needed to be replaced? I wondered what might the average life of those seals.... BTW, welcome to the Jayco Owners Forum 001952119!
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Old 12-15-2010, 07:54 AM   #6
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I do not recall. I had the unit for 14 years. I periodically resealed various windows when the sealant tape appeared to be shrinking and/or drying out. Putty tape is cheap and it is not overly difficult to pull and reseal windows. When you remove the window, it will generally be necessary to pry the window from the sidewall. Just use a stiff putty style knife and DO NOT bend the window frame. That would be a potential source for future leaks. You can also use a piece of wood, i.e. 2x4 cut to about 12" and place on the very edge of the frame and strike with a hammer. Make sure the wood is long enough to distribute the force of the hammer blow throuhout the edge. Obviously, use a "reasonable" amount of striking force to protect the window from damage. I always clean the sealing surfaces with rubbing alcohol, just to ensure a clean, oil free surface. If you use a hand held screwdriver, it will take forever to pull all the windows. Use a battery operated drill motor with a variable torque chuck. You set the torque low and it will work throughout the project without stripping out the threaded holes. My final "word of wisdom" is to use a wood cuticle stick to trim the excess putty from the outside trim area. This works well and protects scarring the paint or gel coat, as would happen with a metal object. Wal-Mart has them in a pack of two for 98 cents in the cosmetics section.
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Old 12-15-2010, 07:59 AM   #7
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I have seen this issue come up before on another forum about windows with dry fit gaskets leaking soon after purchase. I find it a bit disappointing and disturbing that these RV manufacturers use a window seal that fails so soon. How many buyers expect or are prepared to pull all the windows and reseal them after only 2 yrs? How many unsuspecting owners without the benefit of this knowledge and these forums have leaking windows right now? We all expect general basic maintenance but having to dismantle your trailer after 2 yrs is a bit much IMO. I think they can do better then this....
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Old 12-15-2010, 08:11 AM   #8
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I have seen this issue come up before on another forum about windows with dry fit gaskets leaking soon after purchase. I find it a bit disappointing and disturbing that these RV manufacturers use a window seal that fails so soon. How many buyers expect or are prepared to pull all the windows and reseal them after only 2 yrs? How many unsuspecting owners without the benefit of this knowledge and these forums have leaking windows right now? We all expect general basic maintenance but having to dismantle your trailer after 2 yrs is a bit much IMO. I think they can do better then this....
I agree. My 2006 TT (3.5 year old) uses factory build "dry fit" method and of its 11 windows, 3 of them were leaking. 1 window was leaking really bad. And, I didn't even know it. As mentioned above, by the time one does notice a leaking window, its "too late". Too much inner wall damage is already done.

For me, I used RV Flex sealer (which is like silicone material) instead of soft putty. I also put a coat of this clear stuff around the top and sides of each window frame lip as well. Haven't had a window leak since.

To me, the TT factories only need to make something last the warranty period. And if it breaks or leaks after warranty period, the TT owner is forced into repair. Thus, more business coming back to the TT factory / TT maker. Based on my 1st hand experience and reading many posts from others, "dry fit" windows don't work. TT makers need to use traditional "soft buddy" method instead. The old school method of sealing windows is much better.

For my next TT, I'll be re-sealing its "dry fit" windows as well. The day after its warranty time period is over, I'll be "making it better". Luckily, I'm not afraid of DIY projects - especially this easy project (by following the folks in the U-Tube video).

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Old 12-15-2010, 08:27 AM   #9
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I can handle many DIY projects as well and it looks like this will be one of them after the warranty is out. I have read about 3 instances where a 28 BHS, same model as mine, have had window leaks, and these were not old trailers.
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Old 01-17-2011, 06:45 AM   #10
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This is good information to know, after seeing this thread, this has really got my thinking about how many windows I have to take care of...not fun. Thanks for the youtube video, I hope all my windows come out that easy.
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