Flooring project help

766 Views 5 Replies 4 Participants Last post by JazMan, Jan 14, 2016

Wookiejack

Discussion Starter · Jan 11, 2016

This is my first time posting here and was wondering if I was on the right track with my flooring project.
I live in Southern California and just bought a 1,200 square foot house that was built in 1954. The house has a raised foundation with diagonal plank sub flooring that sits on 2X8 joists that are spaced 16 inches on center.
The plan is to lay 3/4 inch OSB over the sub flooring to help level/strengthen the flooring before I install luxury vinyl planks over it. I'm planning on staggering the boards with 1/8 inch pace between them and screwing them down every 6 inches using 3 inch deck screws. The issue is, I keep getting conflicting information on wether or not to use tongue and groove sheets and wether or not to also use glue. Any pros and cons between using nails, ring shank nails, or screws?
If anyone was any insight on this or know any good sites with information or possible videos, could you please let me know?
Thanks in advance

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joecaption

· #3 · Jan 11, 2016

It's OK to add screws to the planks but I'd be using ring shanked #8 nails for the new sub floor.
Use Advantec for the subfloor not just regular OSB.
Add a new subfloors not going to level anything out.
2 X 8's are the bare minimum size for floor joist, but there's sagging in the middle.
That can be fixed by adding more piers and footings and a center double beam in the middle.

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