Writing this for the 2nd time. Intalled Allure traffic master from HD I my 98 Itasca class A moho. Laid 3/8 ply over old flooring for a smooth clean surface. don't use to long of screws or you will hit the water pipes under the floor. I used vinyl wood planks with the exposed sticky strip on the top and side.
With in 6 months the edges began cupping/curling/lifting. At the end of 2 years we could no longer walk on it with bare feet and I had to replace it. HD was no help with any warranty.
I used a marble looking groutable vinyl self stick tile from HD. They have rounded edges so they look like real marble tile. As they shrink they seem to look more real. Used acrylic floor wax to prevent the tile from lifting from spilled water. Wife and I both like they way they look and feel on bare feet. Several of our friends thought they were real tile.
For the front area, sometimes called the cab area or step up area, I striped the carpet from the steel, removed all the glue then screwed down 3/8" ply. Installed carpet pad and cut pile carpet with an air stapler. I used 3M 90 high temp spray glue to install carpet on the engine cover.(dog house) After 18 months both tile and carpet still look brand new. Made my own oak trim for the stair well trim. The sound damping from the plywood and carpet pad is amazing. Had to pull the seats but couldn't pull the seat bases so I had to work around them. You must clean all the glue off the dog house, but don't need to clean it off the steel, just lay the ply right over it.
I used a very thin coat of color caulking where tile flooring and walls meet again to prevent water from getting underneath. I think quarter round or coving looks bad in a coach.
If you dealing with slides be sure you know how much clearance you have for your flooring, it is critical. My good friend installed some very expensive bamboo flooring in his $200k coach. When he brought the slides in, all the flooring was damaged and he had to completely redo the entire coach floor.