Floor Problems

[Craig]

I just puchased a 1997 Viking 1906 ST. This camper is in great condition accept for some water damage by the door. I fixed the door and now I need to fix the foor. I need to replace a small section of flooring but I am not sure of what kind of plywood to use. Does this need to be coated with an undercoating like the rest of the floor? After I fix this small section I plan to put down some 1/4" plywood and new tile.

[tknick]

I just puchased a 1997 Viking 1906 ST. This camper is in great condition accept for some water damage by the door. I fixed the door and now I need to fix the foor. I need to replace a small section of flooring but I am not sure of what kind of plywood to use. Does this need to be coated with an undercoating like the rest of the floor? After I fix this small section I plan to put down some 1/4" plywood and new tile.

I would use exterior grade plywood and coat all sides including edges with a paint or some sort of sealer.  there is not telling how much water would get up there while driving in the rain or on a wet road.  and everyone knows what a mess it is when plywood gets wet and delaminates.....some people have used marine grade plywood, but IMO that would be overkill (although certainly wouldn't hurt).

travis

[Old Goat]

Exterior plywood is put together with waterproof glue and will not delaminate when wet..It will work fine for your floor patching job...Marine plywood is very expensive and would be a definite waste of money in this application.....