Installing pine T&G

[JSK76]

I know this gets brought up every year and I did a quick search and didn't see what I needed so I've got a few questions.

I'm using 1/4"x3 9/16" boards and I have put 2 coats of water base polyurethane on each side. My fish house 4x6 and I'm planing on heating it with a non vented buddy heater and putting 2, 3" vents for letting some of the moisture out (hopefully).

Since wood is never 100% dry when you get it I typically run my boards tight when using them on my home but since I'm going to be putting a lot of moisture in the house because of the heater I'm leaning towards leaving a 1/4" gap at the floor (helps with water on the floor from snow and ice melt too) and 1/8" at each end. Doesn't sound like much but remember the house is only 4x6. I'm also leaning towards using liquid nail on each stud and I will be face nailing 2 nails per board, per stud with 16 gage 1 1/2" nails. I really don't want any buckling and I don't think I will, but I have read other post where people have had an issue. Do you think those gaps are big enough?

[SnowGuy73]

Not sure about the gaps but if you're using liquid nails one nail per stud is plenty.

[randerson]

I did exactly that maybe 3/16 on the ends in my deer stand 4x4 used the 5/16 stuff with liquid nails and tongue nailed everything it only gets used during the rifle season but no buckleing going on 3rd year