Hot Rods 49 Olds wagon, interior woodworking question

Replacing some pieces of the "subfloor". Should this be coated with something? Original stuff I'm leaving doesn't look like it ever was, will have carpet glued to it later.

 

Start with pressure-treated wood, then coat with exterior paint before applying rubber or carpet. Just my two cents.

 

Since it will be covered , it won't hurt anything to paint or use a preservative
on it . That will help make last longer. Go for it!

......................... Jack

 

I think spar varnish would be a good finish to apply to it, since it is weather resistant.

 

nothing protects wood better than paint. rustoleum or some thing equal, thinned will work well.

 

Spar varnish on mine.

 

hey, lets see some pics of that wagon.

 

When we did wagons at the shop we used lots of Thompsons.

 

http://www.jalopyjournal.com/forum/threads/49-olds-wagon-ive-been-working-on.966335/#post-10880996
Thank's for the suggestions guys!