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01-07-2016, 01:17 PM
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#1
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Montana Fan
Join Date: Jul 2011
Location: Elgin
Posts: 262
M.O.C. #11570
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HELP - RAIN LEAK
As you see we have a 2011 3455 Montana.
Arizona has been experiencing heavy rainfall the past couple of days.
Our problem is we have a leak in the bedroom slideout in the front of the unit.
We have toppers on the slideouts. And I put plastic hoses on the gutter ends to take away the rain from the sides & slideouts. All of the rubber seals are facing outward as they should be. There is no sign of water under the toppers on the slideouts. I can see no lack of caulking on the top seams.
I need help in trying to determine where the rain can possibly be seeping into the unit. We soak up the water as much as we can & keep a fan blowing on the area to dry out the carpet to keep from getting mildew starting.
Please help help help.
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01-07-2016, 01:49 PM
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#2
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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I would start by removing both the top and bottom outside seam strips on both sides of the slides and the seam strips running from top to bottom on the far edge of the slides and recaulking. Then check the tape, particularly the corners, running along the far edge of the slide roof.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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01-07-2016, 01:58 PM
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#3
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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I would check the horizontal strip on the side at the bottom of the slide. Another thing to check is the levelness of that slide bottom, ie, is it off level and allowing a film of water to funnel into the front area. And I would really look at the window on the slide at that side...assuming your model has one. I can easily see that the butyl tape used to seat and seal the outer frame would be in a state to allow water intrusion. To check this out, just run a bead of silicon 2 covering the top and sides of the window. Hope one of these is your cure. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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01-07-2016, 02:00 PM
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#4
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Montana Fan
Join Date: Jul 2011
Location: Elgin
Posts: 262
M.O.C. #11570
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Irettired06,
Are you talking about the metal 4 inch strips & 4 corners on the outside of the slideout?? What keeps the panel covering the slideout from coming off?? What type of tape should I use & what type/brand caulk??
Thanks for the information.
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01-07-2016, 02:21 PM
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#5
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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No. I am referring to the.one inch strips on the sides of the slides and the taped corners sealing the roof membrane to the slide. Any good sealer will work. Re tape, I used eternabond on my 2010 and that worked well even though it was a little thicker than the original tape used.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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01-08-2016, 12:12 AM
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#6
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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When ours leaked it was the caulking on the BOTTOM narrow trim on one end of the slide out. Leaks don't always occur from the top!
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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01-08-2016, 01:00 AM
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#7
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Ours was the 4" trim piece on the bottom edge of the slideout. Caulked it with the clear outdoor caulk the dealers use.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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01-08-2016, 03:08 AM
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#8
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Site Team
Join Date: Aug 2007
Location: Omaha
Posts: 6,750
M.O.C. #7560
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The biggest problem about a leak is that water can run a long ways before coming out into the unit. Make sure you have good seals at the seams up on top of the unit too. Even a little crack in the caulking up there can cause a problem. We had a leak on our old unit that came in from the windows in the slide. The caulking or gasket material around the windows had dried out and cracked. Removed the old caulk and used silicone caulk that the service dept. at my dealership uses and had no more problems. One of the problems with the slide covers is that you can't see real well across the front of the slide to see if the sealing tape they put on at the seams is actually bubbling up somewhere. I had that problem on another slide on our old unit and removed the old tape, cleaned it good and put down 4"wide Eternabond tape and had no problems after that also.
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01-10-2016, 04:27 AM
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#9
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Montana Fan
Join Date: Jul 2011
Location: Elgin
Posts: 262
M.O.C. #11570
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Okay, I have found a couple of issues that need to be fixed.
The boot on the antenna cable has pulled loose. Will replace onto pipe.
There is a crack in the molded caulking that needs closing. This caulking is like a large gob poured onto the roof & left to solidify. Question is - do I need to scrape all of the molded caulking off & replace or just fill crack with fresh caulking & what kind. Or can I cover the crack with eternabond tape. If I need to remove all of the caulking what type of cleaner should be used. Remember this is a rubber roof so the solvent must be of type not to damage the rubber.
Also purchased marine/silicone caulking to put around frame as suggested.
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01-10-2016, 07:42 AM
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#10
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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What was most likely used and what you want to use is Dicor Self Leveling Lap Sealant. Use mineral spirits to clean the old Dicor, but be careful not to get it on the rubber roof. Then apply new Dicor to the affected area. You can google rubber roof repairs and find Youtube videos on it. The product is available from lots of places, here's it on Amazon: http://www.amazon.com/Pack-Dicor-Sel...or+lap+sealant
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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