I have torn out the original flooring from by 1910 Victorian so that I can level the joists and install new sound subfloor. I'm using 3/4" AdvanTech T&G subfloor, glued and screwed to the new sisters.
What I'd like to know is if I need to install blocking to provide a nailing edge around the perimeter of the room where the joists deadhead into the brick walls. The original floor had no nailing edge. Installing blocking will be pretty easy in some places, but there are mechanicals that make installing it a challenge in others. There are places where I can't fit a nailing edge within 6" of the exterior wall.
Some things I'd like opinions on are:
- If I don't install a nailing edge, is it likely I will have a noticeable bounce?
- If I should install a nailing edge, but can't fit a full height joist in place, will a 2x4 add enough rigidity to be worth the energy to install?
- If I should install a nailing edge, but can't get one within a few inches of the exterior wall, do I just install one as close as possible or is that just a waste?
- What would your typical contractor do in this scenario?
For you old house lovers who want to yell at me for chucking the old growth pine planks, please know that I did everything I could to try to salvage the original floor. For a wide variety of reasons, it just wasn't in the cards.
Update: Just as an FYI I did not install blocking around the perimeter. 5 months later and there is no noticeable difference between the rigidity of the floor system between the middle of the room and the perimeter. Thanks for you help!