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Old 11-25-2021, 08:25 AM   #1
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Country Coach Magna Roof Replacement

Hi everyone,
I have been reading through several posts on the fiberglass roof on Country Coaches being floating. My 2008 magna definity has a floating roof. I noticed several years ago that there were bubbles or clear separation all over the roof. I had no water leaks so as I read here, I let it be...

Well now there is something going on.. I don't have any water coming into the coach.... BUT there is some bubbling of the leather/vinyl ceiling, and a hint of mold smell. Worst of all when I come to a stop I can year water rushing forward overhead... but no water inside, no water on the roof. The only thing I can think is that there is water between the fiberglass and the roof or in the actually steel tubular framing of the coach... The only reason I say that is after driving there is rust colored runoff on the side of the coach, and my coach is spotless.. so its coming form somewhere.. I have throughly inspected the roof and see no signs of where water could be coming in, and the ACs seem to be draining through their tubes..

So here is my question.. this problem has to be dealt with immediately and thoroughly my feeling is to have everything removed from the top of the coach awnings included, the roof removed and get at where there is water in the ceiling.. through that process try and identify where there may be a failure.. Then replace the roof with the same or new fiberglass.. or even rubber? which doesn't seem ideal or CC would have built them that way and are heavier etc. I know this isn't going to be a cheap project but I feel like I need to get after it at the root before even far more expensive damage is caused..

Appreciate your thoughts and or experiences with something like this?

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Old 11-25-2021, 10:47 AM   #2
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For a job this complex I would contact OMC, Premier or Olstrom Country Coach and ask for their input.

The knowledge they have regarding how your coach was originally assembled will ensure the repair is done correctly.

I would think the seal to radius caps (edges) may need special attention?

Good luck.

Brian
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Old 11-25-2021, 11:10 AM   #3
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Good advice thank you!
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Old 11-25-2021, 11:36 AM   #4
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I saw the original molds at county coach and it was a one piece mold that looked like a boat. They laid up the roof then cut any holes. I did find on my coach the roof assembly had cracked at the location in front where the roof goes from horizontal to vertical behind the front cap. The crack was at the radius. You might give a look there.
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Old 11-25-2021, 11:43 AM   #5
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Quote:
Originally Posted by BrianGlenn View Post
For a job this complex I would contact OMC, Premier or Olstrom Country Coach and ask for their input.

The knowledge they have regarding how your coach was originally assembled will ensure the repair is done correctly.

I would think the seal to radius caps (edges) may need special attention?

Good luck.

Brian
x 2. I doubt the roof flat is leaking but somewhere on the radius connects or the base of the top awnings. The worst case scenario - the flat area is cracked it can be patched with fiberglass cloth and resin, no need to replace the whole piece.

Anyway, as above suggested, anyone of them can fix it for you. Let us know how it goes. Good luck!
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Old 11-25-2021, 08:59 PM   #6
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Willardmagna,

So sorry to read about your problems with your Magna. Have you had the opportunity to explain what is happening to the folks at Premier, OMC or Olstrom? Between the 3 of them I feel they have seen every CC issue that could happen either as the result of Mother Nature or building errors.
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Old 11-28-2021, 01:25 PM   #7
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I found some cracking around the goop that was around the TV antenna (Dicor I assume was used then)

I would look at all places holes were put in the roof to mount things.
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Old 11-28-2021, 09:32 PM   #8
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I found some cracking around the goop that was around the TV antenna (Dicor I assume was used then)



I would look at all places holes were put in the roof to mount things.


Country Coach apparently used a self leveling product called SM5504 to seal the openings. I learned this from one of the coach builders.
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Old 12-02-2021, 10:47 AM   #9
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Originally Posted by 2-Nickels View Post
Country Coach apparently used a self leveling product called SM5504 to seal the openings. I learned this from one of the coach builders.


I also read this information in a CC Destinations Online article about 2007. Written by Brian Keys, a long time CC employee, who I think was a technical specialist at the time.

It was the Schnee Morehead brand, SM5504.

An alternate product is the SikaFlex 715.

Brian
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Old 12-02-2021, 12:28 PM   #10
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Quote:
Originally Posted by BrianGlenn View Post
I also read this information in a CC Destinations Online article about 2007. Written by Brian Keys, a long time CC employee, who I think was a technical specialist at the time.

It was the Schnee Morehead brand, SM5504.

An alternate product is the SikaFlex 715.

Brian
Do you happen to know what product was CC used for vertical caulking? It looked like clear silicon but much less dirt attraction.
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Old 12-02-2021, 12:57 PM   #11
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Yes. It was a Dow Corning 733. 100% silicone for sealant around framed windows, belt moldings, etc.

I have been replacing mine over the last couple of years, particularly on angle trim on bottom edge of slides. Click image for larger version

Name:	5A3686E1-B3A1-4A10-92E5-FCC4139CA5FC.jpg
Views:	13
Size:	256.1 KB
ID:	350373
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Old 12-02-2021, 01:25 PM   #12
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Yes. It was a Dow Corning 733. 100% silicone for sealant around framed windows, belt moldings, etc.

I have been replacing mine over the last couple of years, particularly on angle trim on bottom edge of slides. Attachment 350373
Awesome! I knew you knew it... Kudos
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