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10-28-2019, 05:25 AM
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#15
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Senior Member
Join Date: May 2017
Location: Metamora, MI
Posts: 5,525
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Clean up all parts. Paint the metal, an put one or two layers of fiberglass on the existing fiberglass.
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2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
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10-28-2019, 05:47 AM
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#16
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Senior Member
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 5,228
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I agree with DavL's recommendation for the metal.
To add to the FG repair, lightly scruff the inside FG up with at least 80 grit, being sure not to cut through. Then I would use a polyester resin and 3/4oz chopped strand mat (CSM) to add a layer or 2 of the CSM wet on wet. Grind the hardened (I like using flap sanding wheels) CSM semi smooth and then cover with insulation, etc. Find a marine place to buy the materials.
__________________
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
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10-28-2019, 06:13 AM
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#17
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Senior Member
Join Date: May 2017
Location: Metamora, MI
Posts: 5,525
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https://www.msn.com/en-us/autos/enth...ail/ar-AAJqpLT
Look at 9:00 on preparing the metal. I would first wire wheel to remove the big rust scaling, vacuum and then treat and prime as per that video.
You can buy all the fiberglass material at Home depot and walmart. Cheaper at WM.
__________________
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
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10-28-2019, 10:14 AM
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#18
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Senior Member
Gulf Streamers Club Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 4,334
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Suspicion is still heavily coated in remnants of the lauan plywood? So remove this and clean, cut new and glue back to the fiberlgass using acrylic adhesive, such as Titebond Fast Grab FRP adhesive. Do NOT use solvent contact cement, as fumes can melt any foam insulation.
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(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
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10-28-2019, 11:45 AM
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#19
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Senior Member
Join Date: Jul 2019
Location: oregon
Posts: 674
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Boy i am quite new to this forum and RVs but not new to fiberglassing...I would like to here anyone's rational for trying to use fiber glass to bond to aluminum or metal...In 30 yrs ive never seen that done successfully...perhaps FPR board which and a glue that will bond to aluminum and the FPR ... Its about expansion rates in the end...If you must follow this path a Epoxy resign would be the best bet...Epoxy is stronger and actually has a much better glue like quality...good luck.
FPR board laid flat on the outer skin wall..... then framed... then build your new inner wall. Very simple.. very strong... little or know guess work.
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10-28-2019, 02:41 PM
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#20
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Senior Member
Join Date: Sep 2019
Location: Minne-so-cold
Posts: 708
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Quote:
Originally Posted by THenne1713
Suspicion is still heavily coated in remnants of the lauan plywood? So remove this and clean, cut new and glue back to the fiberlgass using acrylic adhesive, such as Titebond Fast Grab FRP adhesive. Do NOT use solvent contact cement, as fumes can melt any foam insulation.
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Wouldn't the Lauan plywood still be attached to the interior paneling right before the insulation layer? Or is it after the insulation covering the exterior fiberglass? Im still learning this so I may be mistaken!
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10-28-2019, 05:52 PM
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#21
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Senior Member
Join Date: May 2017
Location: Metamora, MI
Posts: 5,525
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Quote:
Originally Posted by EyezOpen
Boy i am quite new to this forum and RVs but not new to fiberglassing...I would like to here anyone's rational for trying to use fiber glass to bond to aluminum or metal...In 30 yrs ive never seen that done successfully...perhaps FPR board which and a glue that will bond to aluminum and the FPR ... Its about expansion rates in the end...If you must follow this path a Epoxy resign would be the best bet...Epoxy is stronger and actually has a much better glue like quality...good luck.
FPR board laid flat on the outer skin wall..... then framed... then build your new inner wall. Very simple.. very strong... little or know guess work.
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I don't think anyone is suggesting to fiberglass the metal. My recommendation was clean, treat metal, prime and paint. Metal is then done.
For the exterior fiberglass, clean, put resin and new glass ontop on the interior side to strengthen the outer skin. Then, reinsulate (foam board is fine), Luan, finish interior panel.
__________________
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
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10-28-2019, 08:48 PM
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#22
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Senior Member
Join Date: Jul 2019
Location: oregon
Posts: 674
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Quote:
Originally Posted by Dav L
I don't think anyone is suggesting to fiberglass the metal. My recommendation was clean, treat metal, prime and paint. Metal is then done.
For the exterior fiberglass, clean, put resin and new glass ontop on the interior side to strengthen the outer skin. Then, reinsulate (foam board is fine), Luan, finish interior panel.
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Eyes open yes but s smidge blind without reading glasses.....my bad and you are quite correct.
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10-29-2019, 05:36 PM
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#23
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Senior Member
Join Date: Sep 2019
Location: Minne-so-cold
Posts: 708
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10-29-2019, 10:31 PM
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#24
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Senior Member
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 8,300
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I agree with earlier post to use epoxy. Not 5min epoxy you can tack down glass mat with super glue . Brush in epoxy you can warm it with hair dryer it will be thinner to soak through easier. Follow temperature guide lines for curing.Go ahead and let woven mat over hang and trim later. Don't over wet the over hang it will keep it from dripping off. You can over wet glass and float it off the surface too much.
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
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10-29-2019, 11:07 PM
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#25
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Senior Member
Join Date: Sep 2019
Location: Minne-so-cold
Posts: 708
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Quote:
Originally Posted by 153stars
I agree with earlier post to use epoxy. Not 5min epoxy you can tack down glass mat with super glue . Brush in epoxy you can warm it with hair dryer it will be thinner to soak through easier. Follow temperature guide lines for curing.Go ahead and let woven mat over hang and trim later. Don't over wet the over hang it will keep it from dripping off. You can over wet glass and float it off the surface too much.
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TY 153!
Is wetglass the same as fiberglass mat?
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10-30-2019, 12:52 AM
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#26
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Senior Member
Join Date: Jul 2019
Location: oregon
Posts: 674
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I can see maybe a tutorial or a indepth method might help...below is a fairly inexpensive simple thread of glassing...Pay attention to Ondarvr he is one of best in the boating industry. The DR is quite well informed as well
https://forums.iboats.com/forum/boat...ivingston-hull
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10-30-2019, 11:44 AM
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#27
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Senior Member
Join Date: Mar 2019
Location: Braidwood Il.
Posts: 8,300
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Quote:
Originally Posted by C5c5
TY 153!
Is wetglass the same as fiberglass mat?
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Sorry not sure what is wet glass is Google didn't come up with mat. Yeah good idea to watch some boat repair vids. I like to watch some pro type and some good ol boy ones for good cheaper tricks for stuff I'm gonna tackle.
__________________
95 Monaco Crown Royale
M11 400hp, 4060 trans.
Aquahot, Generac Guardian7.5k
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10-30-2019, 12:01 PM
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#28
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Posts: 4,569
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If my eyes aren't playing tricks on me I don't think the fiberglass that I see is really even doing anything. It's going to be covered with some type of new board/paneling, etc.
Make the new repair and window install better than the original. This shouldn't be too hard based on what I've seen (even with Newmar, etc.) They don't take the same type of time that a home window installer would. Once you make the new window leak proof will it really matter how that fiberglass looks?
__________________
1996 Tioga Class C
2007 Monaco Diplomat 40 PDQ
TOAD 2012 Cadillac SRX 4
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