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Old 01-13-2019, 01:19 PM   #1
First time Argosy owner
Pharanak's Avatar
1973 Argosy 24
Plantersville , Texas
Join Date: Oct 2018
Posts: 6
Replace entire subfloor?

Hey all!
Weve gotten our Argosy completely gutted and now begins the arduous task of making her livable again.
At present the subfloor is primary concern, theres holes in the corners, and a little separation up front.
Judging from the photos would you say I should replace the entire subfloor or just patch things here and there?
The top three pics are of the front.
Bottom two are back of trailer.
There seems to be no issues in between.

Thanks in advance!
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Old 01-13-2019, 01:30 PM   #2
Dazed and Confused
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1983 31' Airstream310
Hillsburgh , Ontario
Join Date: Sep 2012
Posts: 3,284
IMHO, you have leaks and they may have, but most likely will not have been found and sealed yet.

I found with my subfloor repair that in most cases the top 1/6th of plywood looked strong and dry, but found the rest below was wet and or dry rotted.

You may, or most likely be facing residual or future black mold issue if you don't take it out and replace it.

I would take the subfloor completely out, giving you a chance to assess the frame below, fix any issues with outriggers and PQR-15 the frame. I would then replace the subfloor with Coosa board; 40-45% lighter than plywood, just as strong, if not stronger; will not rot, promote mildew or the growth of mold and fungus; less than 1% water absorption; which means you don't ever care about leaks ever again, (unless the leak lands on your bed).

Sidekick Tony

PS My subfloor repair

PSS It's a lot of work, yes, but so is the rest of your project; why not start the process properly and do it right from the beginning. A future owner will appreciate it, and so will your bank account, should you decide to sell the Argosy.

Per Mare, Per Terram and may all your campaigns be successful.

Its a recession when your neighbor loses his job; its a depression when you lose your own. "Harry S Truman"
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Old 01-14-2019, 11:22 AM   #3
First time Argosy owner
Pharanak's Avatar
1973 Argosy 24
Plantersville , Texas
Join Date: Oct 2018
Posts: 6
Yo sidekick!
That’s some very good advice
Very much appreciated!
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Old 01-14-2019, 01:20 PM   #4
Rivet Master
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,773
The front and back areas are the most important. This is where the hold down plates are. I would recommend you remove the lower skins at least some of it and see what the frame looks like. You need to get all the wet pink fiberglass out. Most of us POR 15 the frame and make spot repairs. Your floor does not look that bad. I would say replace the front and rear sections. The rot in the corners are because the C-channel has a gap in it where the straight walls meet the curved sections. You will want to pull the lower inner skins and get the soaked fiberglass out of there as well. It is also the best way to find leaks. I ended up putting drains in my C-channel to keep the water off the floor and funnel it under the trailer. Unless you find some really rotten frame members, I am not sure I would do a shell off. Also you don't need to replace axles as the first thing you do which seems to be the advice on here.

Once you start pulling stuff apart you will understand the structure a little better. Also you will save some time by keeping wiring and plumbing, and electrical like they are instead and trying to reinvent the wheel. You can get over your head quick by doing a total gut then have to figure out how to make it a trailer again.

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Old Yesterday, 07:41 AM   #5
Rivet Master
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1971 21' Globetrotter
Arvada , Colorado
Join Date: May 2006
Posts: 2,924
Been there done that. Like Tony said above. Once I got started it was quite easy. Best thing I ever did was to replace it all and get rid of all those nasty smells.
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