If you look at some of our latest pictures you can see that we are down to the bare frame now. After I get the frame sand blasted and repainted then the floor goes back on.


Originally the Terry did NOT have an exposed wood floor. The bottom of the trailer was actually made up of the trailer siding. Then there were 2x2's for structural support with some insulation. Then they mounted the wood flooring on the 2x2's.


I am going to put an exposed wood floor on the bottom then the 2x2s and then the wood floor with the sheet insulation in between the sandwiched wood. Now I need to protect that exposed wood so all of my hard work does not rot out from underneath of me.


I know that I can seal this wood and that is a good idea. I have also thought about covering it with metal siding again, but I am not sure that even if I seal it will it collect moisture between the metal and the wood and rot the wood still.


Another option MIGHT be to spray or roll on that truck bed lining stuff to protect the wood if that idea wood (pun intended) work.


My other question is how do camper manufacturers protect the bottom of the new campers? I haven't looked close enough at the bottom of new trailers, but when I have seen the bottom they are colored black. I haven't been able to tell if that is a sealant on wood, if it is a spray coating, if that is a metal bottom, etc.


This is a big decision because the floor is my whole foundation for the rest of my work. Any and all input would be greatly welcomed. Thanks all!


Craig & Lisa

Views: 2671

Reply to This

Replies to This Discussion

Hi Craig and Lisa,


The new rigs either use Coroplast plastic cardboard like stuff or black woven sheeting on the belly. If the woven material gets ripped, there's a special sticky tape to repair it. 

You are correct that metal causes rot. Most vintage trailers with a metal belly pan have major floor rot. If there's a leak anywhere above, it eventually ends up in the belly, making a nice warm soup to rot the floor joists...

Another idea is to go to a good paint store and find out what they recommend for outdoor plywood. I'm thinking of a marine type product, too; maybe similar to Varathane. I have used rubber undercoat spray on plywood as well as Herculiner on the edges. It seems as if it will do the job.   

I've also seen roofing paper (the black stuff) layered between the metal frame and plywood bottom. My 54 Bellwood was that way and had a very sound floor. 

Hope this helps.    VK

I am thinking that rubber undercoating spray would be an excellent fit. I was just wondering if anyone else has had some success with it. From what I read it sounds like it has worked for you which is what I was hoping to hear. Thanks for the feedback VK.



Hi Craig and Lisa,

    In the marine industry we use a two part epoxy to seal plywood.  "West system" and "System Three" are the two big names.  Fairly simple to use but rather hard on you, wear a mask and gloves.  The stuff wears off your hands.  If you cut the first coat with 10% acetone it will soak into the wood and then later coats will make a 100% waterproof seal.  Endgrain is where rot usually starts.  So make sure it gets extra coats.  Also anyplace anything goes through the floor/plywood,  bolt, pipe ect.  Bore the hole over size and fill it with thickend epoxy. Once the epoxy goes off and is solid then drill your correct size hole through the epoxy.  It is a bit of work but it will never rot.  I would also paint it with an epoxy paint before install and put tar paper between the frame and subfloor. 


    Epoxy is a two part plastic mostly used in the marine and aviation industry.  It is degraded by sunlight so it must be protected by paint or some other coating.  It is 100% waterproof!  W/S and S/3 both have good info online and in books.  Any book on "Stitch and Glue" boat construction will tell you more then you want to know about sealing plywood.  If you decide to go this route and have ???s 541-290-9631  Happy to help. Hope this helps, Fair winds, Tony, Joy and Cool Paw Luke.

Thanks for the update. I had forgotten all about stitch and glue methods. I have never done that but I have looked into it because I had wanted to build a wooden boat from Glen-L. I also like the vintage boats as well. I will have to read up on that because you make a very good point that if this method is good enough for a boat... it should be good enough for a camper floor.


I think I may have some questions for you here in a couple of weeks. This next week I am going to try to get the trailer to be sandblasted and then I am going to seal the frame. So it may be a few or three before I can actually get back to working on my trailer just based on my work and family schedule right now.


Thanks for your input.



Hello Tony. I think I may be giving you a call this evening if I remember. I do have a couple of questions for you regarding the floor and the two part epoxy.


I guess I am kind of confused regarding the stitch and glue and the two part epoxy. You are saying to only apply the two part epoxy, but not to actually do the stitch and glue process which would involve rolling out fiberglass, correct?


Thanks for your help Tony. 



Correct, Just use epoxy as a sealer.  I'll be home.  Fair winds, Tony and Joy



Tires for tow dolly 6 Replies

Started by Russell & Berniece Johnson in RV Repair & Maintence. Last reply by Russell & Berniece Johnson on Thursday.

Dodge motor home manuel 2 Replies

Started by mike jennings in RV Repair & Maintence. Last reply by mike jennings on Tuesday.

Burner grates 1 Reply

Started by Jack McCullough in RV Repair & Maintence. Last reply by Rich Thomas on Tuesday.

Exhaust Pipe 8 Replies

Started by Valerie Phythyon in RV Repair & Maintence. Last reply by John "T" Nordhoff on Monday.

Blog Posts

Rotted wood repair that works

Posted by jeff york on October 29, 2014 at 11:02pm — 2 Comments

Nothing like a good ol Foretravel

Posted by Brad Galloway on October 29, 2014 at 4:20am — 1 Comment

Custom 4 Speed OD trans build

Posted by jeff york on October 28, 2014 at 10:28pm — 5 Comments

1964 travco axle brake conversion

Posted by Dan Boldt on October 25, 2014 at 6:12am — 4 Comments

440-3 rear main seal replacement

Posted by brian leibow on October 24, 2014 at 9:00pm

Thermasan - new owner's group being formed

Posted by David Edwards on October 24, 2014 at 6:52am

LP. Gas Systems

Posted by david craft on October 21, 2014 at 9:30am — 12 Comments

After Market Electric Hot Water Heating

Posted by John "T" Nordhoff on October 21, 2014 at 7:20am — 7 Comments

converter evolution

Posted by david craft on October 21, 2014 at 2:26am — 15 Comments

RV Power Grid Monitor

Posted by Leonard on October 19, 2014 at 10:57am — 1 Comment


If you love classic and vintage RVs then come Join us. Come on in and have some fun. JOIN HERE NOW



  • Add Videos
  • View All

Vintage RV community. Get Help Share Information. Learn How To Restore Vintage Trailers, Retro Campers, Buses & Old RVS . Vintage RV Photos

Plugs for Members

            Hey Gang! Ready to Go-Go?

By GORVS Member Carey Masci
This book is a lighthearted look at 30 road trips taken by the author, Carey Masci, across the United States, beginning in his childhood. The reader will see America through the eyes of the author as he travels with family and friends to some of the most interesting locations in this country! 

Buy Carey's great book     HERE

        YOUR OWN GORVs T-Shirt!

A work of art by member Paige Bridges

Get your Good Old RVs T-Shirt HERE


Paige's VintageTrailer Art  

 Paige's VintageTrailerFabric

Vics Whimsy Art https://www.facebook.com/pages/Vics-Whimsy-art/1486096451628822

  Artistroads                    RetroBrenda


 Disclaimer - Please Read it

Enjoy this site and use it totally at your own risk.

By using or viewing this site YOU agree to Hold Harmless anyone associated with it including other members. Also, YOU agree that YOU are solely responsible for ANY and ALL actions, results or damages. Members "opinions" are just that. Any repairs or modifications do totally at YOUR OWN RISK. Use licensed professionals for all work to avoid possible serious injury or damage. Use  banks for purchases. You could get computer viruses or hacks. Have fun!

Copywrite & Trade Mark Registered GoodOldRV© ,GoodOldRVs©, GoodOldRVs.com©,GoodOldRVs.net©,GoodOldRV.Com©

© 2014   Created by Pat Daly.   Powered by

Badges  |  Report an Issue  |  Terms of Service