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10-23-2022, 01:11 PM
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#1
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Established Member
Join Date: Oct 2021
Location: Garden bay
Posts: 10
M.O.C. #29839
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Compartment doors leak
Hello we have a 2018 Montana 3700LK. The outside compartment doors leak especially the front storage doors. Anyone recommend a better quality seal?
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10-23-2022, 02:13 PM
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#2
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,952
M.O.C. #5651
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Not sure about this, but I think there is some sort of drainage hole somewhere in the frame. Maybe it is plugged? Also, make sure the latch is adjusted so it fits snugly. If it isn't tight and you get a hard rain or while driving, it will leak in around the edges.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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10-23-2022, 07:41 PM
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#3
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Montana Master
Join Date: Jan 2018
Location: Austin
Posts: 2,418
M.O.C. #21044
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Caulk the perimeter if the door frames to the fiberglass siding.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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10-23-2022, 08:01 PM
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#4
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,693
M.O.C. #24086
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Mike drew this a while back.
Caulk along the hinge at the top.
I also caulked the fiberglass door and metal frame around the door.
Do NOT use ProFlexRV. I used that and a few months later it was hard and pealed out.
I tried Big Stretch (Lowes). So far so good.
Affinity RV Group uses Trempro 645 RV sealant on any repairs they do.
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10-23-2022, 08:56 PM
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#5
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Montana Master
Join Date: Mar 2020
Location: Lamesa
Posts: 621
M.O.C. #26010
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I use ProFlex on many areas that need sealing without problems. What they did do is come out with "crystal clear" vs "clear". I used crystal clear not paying attention - sort of like having crystal shining at you. Big Stretch was recommended by one of my contractors on one of my homes. He used it, it was OK. I used it and didn't like it. I prefer more RV specific sealants. As with anything the owner will pick a preference. I have a shelf full of "sealants", probably at least 30 tubes, of various types from different makers - pick what works for you.
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Danny and Susan wife of 55 years
2019 Ram Laramie 3500 6.4 4x4 CC 4.10 SRW
2020 Montana High Country 331RL
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10-23-2022, 10:57 PM
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#6
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Montana Master
Join Date: Dec 2021
Location: Northeast TX
Posts: 941
M.O.C. #30262
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On ours, the DS pass-through door had a twisted gasket up along the top and along half of one side. Removed the old gasket material, cleaned off the old adhesive and installed new gasket we bought from Amazon. No more leaks....
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 Lee, Edith, Lil' Bit & Cuddles
22 MHC 331RL, Surge Guard 35550, SumoSprings, Kodiak disc brakes, 412Ah Lithium, Gen 3 Goosebox, Sailun 85s
22 Ram 3500 CC DRW 6.7 CTD Herrin Hauler Classic Bed, 45 gal AUX tank
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10-24-2022, 08:32 AM
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#7
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,232
M.O.C. #30417
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Our compartment frame wasn't square, not allowing a seal. I didn't notice it until I opened the other side and looked in. I could see day light.... FLRV rebuilt the frame.
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Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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10-24-2022, 11:22 AM
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#8
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Montana Master
Join Date: Mar 2020
Location: Lamesa
Posts: 621
M.O.C. #26010
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The couple of comments above reminded me that ours also had a bent frame inside one pass through door causing daylight to shine through, caught it before it leaked water. Dealership worked on it then I took it home and straightened it out plus made some mods to the stops used for the latches to get it good and tight.
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Danny and Susan wife of 55 years
2019 Ram Laramie 3500 6.4 4x4 CC 4.10 SRW
2020 Montana High Country 331RL
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10-24-2022, 01:57 PM
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#9
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Montana Fan
Join Date: Aug 2017
Location: Olmsted Falls
Posts: 215
M.O.C. #20364
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Twice s year i use gasket silicone on all of them. Make sure to wipe clean first to remove any sand particles, then silicone and works great keeping water out.
__________________
Rick & Joyce Jones
RMC(SW) USN Ret.; AT&T Ret.
2024 3231CK, IS, 400W Solar, Slide covers, Predator Gen,, 2016 Chevy High Country 3500 Diesel Dually 
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