So.... Finally I have completed this project. I did a high-end residential sheet vinyl from AHF. Approx $150 for a 12' x 6' piece (have lots extra for little projects). Part of the reason was to do sheet vinyl was the fridge in my Tiger is set very low there is not clearance for thicker flooring and secondly I have a ramp to my pass-through. (Later I learned on the Tiger forum that the work around is raise the fridge and remove the ramp and make a step - still a lot of work!)
The project was tough, the old vinyl was very well attached, I had to remove it using a steam iron and a 4" razor scraper took over 8-10 hours to remove the floor entirely. Sorry no before pics but was ugly, damaged and dated.
Once the floor was off I had to sand and wood fill damage from me scraping and other defects. I had a few problems with the old floor mainly where a butt joint of my Tiger plywood was heaved. I fixed this by adding a 1x4 underneath the sheets and deck screws every 6" still had to sand smooth to get perfect. Tiger didn't butt sheets of plywood on the metal floor supports for some reason is what caused this.
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I made a giant cardboard form of the floor in the Tiger and cut the sheet vinyl slightly bigger and trimmed the excess in place. I used an RV floor glue by RecPro I bought on Amazon, it was very quick drying which kind of kicked my behind, but I got it done. I glued half the floor and then the other half and may have had better results doing smaller sections or trimming before glue was down.
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It turned out pretty good without trim but there were some small areas I think needed it so I used a vinyl cove style 1/4" trim called 'Instatrim'. It is basically peel and stick but after I did a test piece I installed all mine with black silicone caulking for extra adhesion. The stair I used a corner guard black vinyl from Amazon that is made to make outside corners safer for kids and such. The hardest trim was the piece joining the cab I used a 3" black vinyl transition trim peel and stick I found on Amazon, whoever put the rubber on the truck floor did a bad job so I needed a very wide transition to cover some bad cuts this was also a very wavy area and I had to use narrow crown staples to hold the top flush to the floor. I also had to use silicone to secure this like all the other peel and stick used. Tiger had use real wood trim or aluminum and I am hoping this vinyl trim will actually last longer.
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Overall project with demo and trim probably took 20-25 hours like most projects could do it way faster the second time
Total project costs with trim and glue/silicone was $250ish (had a few things needed on hand).