Hello. I've looked around online a lot, including here, and I just need some clarification on installing standard (3 3/4"x) 5/8" T&G bamboo on an old pine/fir T&G subfloor. I had started to think about trying to float the floor, but now I think it's clear to me that those installations are best reserved for click-type engineered flooring, so I think I'm looking at nailing/stapling, maybe along with glue. I'm also wondering about whether I should add a 1/4" or 3/16" layer of Luan plywood as underlayment, or anything else (like cork, although I'd rather go cheaper). In either case, should I plan on adding maybe 15-weight tar paper to prevent squeaks, and if I add plywood underlayment, should it be sandwiched between sheets of paper? Finally, what fasteners and/or nailers would anyone recommend for this installation? I've been seeing people say that nailing T&G bamboo can be dicey, and wonder if anyone's found a good solution that avoids split tongues. Thanks in advance for any advice.

New here and finding some great info. Remodeling and have three different floor situations to deal with. 12x12 vinyl tiles in entry and 3 rooms(do not know age for possible Asbestos), 6"x6" parquet in most or rest of house, except for kitchen which is concrete that is coated (?) with some sort of paint or sealer. Floor is very eneven where various waterlines, drains, vent for island, etc come into play. Also floor falls from LR to outside wall over an inch in 13 feet (had to have been a converted porch or something?). Getting all kinds opinions, but can I, (1) successfully glue new Premium Green over seemingly stable parquet- (2) is there a glue down method for filler like luan over 12"x12" vinyl (peel and stick?) to level up to parquet- and (3) what is best and most cost effective method to prepare approx 200 sq ft kitchen floor? BTW have Bosticks Best as adhesive. Thanks!