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11-02-2015, 11:33 AM
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#1
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Happily Retired Member
Join Date: May 2013
Location: Munith, Mi
Posts: 178
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Rusty undercarriage
Just a heads up, my 2013 378xl with 6600 miles on it looks like the photo all along the outer metal support. Both sides front to rear. This unit is stored inside when not in use. I am going to wire brush it, encapsulate the rust then undercoat it.
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Mickey & Sue Stamper
2013 GT XL 378TS
Fire Mist
2013 Ford Escape on Landgrebe tow dolly
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11-02-2015, 08:14 PM
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#2
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Member
Join Date: Jul 2015
Location: Wakefield,Ma
Posts: 64
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I have a 2014 377XL, and when under this fall , found the same. Figured I would wire wheel and paint in spring or sooner. Supposed to be warm all week.
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11-02-2015, 08:28 PM
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#3
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Senior Member
Join Date: Jun 2015
Location: Pensacola, FL
Posts: 1,645
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21st century coach builders who have not learned anything since the 19th century. Amazing that with all the technology that Auto manufactures have adopted in the last 40 years to rust-proof cars, the RV builders still have their heads in the sand about these problems.
Mickey. I would suggest that you reconsider using both encapsulation AND undercoat. The reason is that anything less than 100% perfect sealing of both can cause water to be trapped between the membranes and actually promote rust. Honda had a massive recall on fuel filler pipes in the 80's because of this. The problem is 10X as bad in areas that use road salt, because the summer humidity combines with elevated temperatures.
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2019 Coachmen Freedom Express 192RBS
2015 T12RBST Flagstaff Hardside
Disclaimer: The actual value of my "Two Cents" of advice varies just like a bitcoin.
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11-02-2015, 08:43 PM
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#4
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Senior Member
Join Date: Mar 2014
Posts: 1,748
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Wire brush it, rusty metal primer and paint. Just monitor it over time. It doesn't look to bad.
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11-02-2015, 08:46 PM
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#5
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Senior Member
Join Date: Dec 2012
Location: Hampton Roads, VA
Posts: 592
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x2
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John & Susan, Olivia the dachshund
2011 Georgetown 337DS
2003 Dodge Dakota
Hampton Roads VA
2016 174 Days camping, 2017 66 days 2018 24 days 2019 48 days 2020 25 days 2021 6
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11-02-2015, 09:08 PM
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#6
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Happily Retired Member
Join Date: May 2013
Location: Munith, Mi
Posts: 178
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The encapsulater I plan to use is a good spray from Eastwood. It is similar to POR 15 but easier to apply so it will create a good finished result that should last. POR 15 is also an excellent product I have used in auto restoration, but is a bit harder to apply.
__________________
Mickey & Sue Stamper
2013 GT XL 378TS
Fire Mist
2013 Ford Escape on Landgrebe tow dolly
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11-02-2015, 09:23 PM
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#7
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Senior Member
Join Date: Oct 2014
Posts: 981
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I shot the complete undercarrige of mine as soon as I got it home. Never saw rain or salt.I used 12 gal of rubberized automotive rust proofing with a dedicated rustproofing pressure pot and spray gun. I really had to turn it down as the pattern will be about 10" hight when the material screws are full open.Anyway,7000 miles later and it looks the same as the day I did it.
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11-02-2015, 09:28 PM
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#8
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Member
Join Date: Sep 2015
Posts: 49
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I just bought a 2016 FR3 and decided to under coat. I used a product that we use on the underside of snow plow trucks. It is called Fluid Film. It will soak in to the rusted areas , joins and crevices .By doing that it should seal off he oxygen and eliminate further corrosion. Another nice thing about this product is that it can be sprayed on electrical connections and seal them off but be cleaned off more easily that a rubberized product.
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11-02-2015, 09:43 PM
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#9
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by Grumpy Guy
I just bought a 2016 FR3 and decided to under coat. I used a product that we use on the underside of snow plow trucks. It is called Fluid Film. It will soak in to the rusted areas , joins and crevices .By doing that it should seal off he oxygen and eliminate further corrosion. Another nice thing about this product is that it can be sprayed on electrical connections and seal them off but be cleaned off more easily that a rubberized product.
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What color does fluid film dry to?
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11-02-2015, 09:52 PM
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#10
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Senior Member
Join Date: Oct 2014
Posts: 981
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Fluid Film is great stuff. I use it just about everywhere,but I dont think it would have enough resistance to stone chipping,and you would probably have to re-do it every year. I know a lot of people swear by it as an underbody rust proofer. Maybe I'm just too old school because I like asphalt base undercoat!
edit) it never really "dries". It is a amber transparent color and a waxy surface.
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11-02-2015, 10:06 PM
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#11
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Member
Join Date: Sep 2015
Posts: 49
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The fluid film may need touched up or checked after a couple years. But part of the never really drying aspect is that it stays soft and plyable therefore resistant to chipping. It will self heal to a degree depending on application thickness
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11-02-2015, 11:18 PM
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#12
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Senior Member
Join Date: Oct 2014
Posts: 981
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Do you get it in gal or qts? Shurly your not doing a whole undercarrige with bug bombs.
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11-03-2015, 08:54 AM
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#13
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Member
Join Date: Sep 2015
Posts: 49
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I bought a spray gun with extention wands and different pattern nozzles, three screw on application cups, a bottle with brush, two gallons and a can top funnel. It was all about $175 . I dont intend to do the non metallic surfaces. It doesnt have that nice finished look like rubberized undercoat. I will still use that or paint on the underside of my "summer" cars.
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11-03-2015, 09:09 AM
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#14
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Senior Member
Join Date: Oct 2014
Posts: 981
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OK. Ive had my pressure pot undercoat gun set up since the early 80's.The gun itself is a binks #39. The fluid stem is about 0.250". I never made any wands for it.Where I needed a wand I used a body shutz gun.My biggest problem with the trailer was getting it high enough off the ground to do it.
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11-03-2015, 10:16 AM
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#15
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Member
Join Date: Sep 2015
Posts: 49
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I just use a couple ramps and a creeper. I also may not be the sharpest tool in the shed cause I pressure wash my boat the same way. The fluid film is avalible in three viscosity.
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11-03-2015, 11:37 AM
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#16
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Senior Member
Join Date: Oct 2014
Posts: 981
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What kind of ramps do you back a 12k # trailer up on? That would take some serious rams and they would have to be 6' long to catch both axels.
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