i am making the mother -of-all-farmhouse tables for my daughter and son in law who – wait for it -just bought a 100-yr old farmhouse in central Texas. so a farmhouse table made from 100 yr old wood is being re-purposed for 100-yr old house. at a Restore in Houston I found some 8/4 pine flooring (1-5/8). i planed the top enough to remove the finish, and the bottom enough to remove paint and discolored wood, ending up with 1-3/8”.
so my main question is -
(1) since it is 100 yrs old and it has had a finish on only one side all this time, can i assume i am safe only applying finish to the top? my plan so far is to stain with Watco dark walnut danish oil both sides, maybe two coats to get it dark enough, then topcoat with polyurethane.
(2) i have never used sealer on my live edge work, but should i use a sealer first to keep from having to use too many coats of poly?
(3) any guesses as to approx how many coats to expect with this wood? i realize that is a big “it depends” type question, but antique pine is fairly common so i figured there would be a wealth of experience with it in here
(4) it is a bit of a rustic piece, but i plan to use GF Arm r seal or maybe the Gel Topcoat just because it is so much easier to apply, especially with a piece this large and all the joints that will allow some leakage of a thinner poly.