We purchased a d log home in north georgia in 2000, they builder used silkens stain, we after six months stained the unfininshed deck and rails again with silkens, Everything looks great except one wall that gets direct sun now needs more stain, I have read not to seal the cracks unless letting in bugs or water, so we haven’t just caulked the 45 boards and above the windows. Question 1 is there a better stain and can it be put over the silkens Question 2 is there a caulk that will last longer f