What do i do with this subfloor

Okay so big addition in my newly aquired fixer. Built in the 80s. Uses a pretty nice tongue and groove 2X6 subfloor BUT its on over 5ft on center. The floor bows a bit in between the floor beams. The room also slopes downwards to either side from the middle. I am not sure i want to try to raise the entire side of the house. I was thinking of either putting a new osb subfloor over the decking and shimming it level. (Its over 1in low over 10ft). Or ripping it out all of the tongue and groove and putting joists in between the 5ft centers on hangers and throwing down some 7/8 tongue and groove OSB on it like a normal house. Also my transition from the addition to the rest of the house is ALREADY over 1/2in high on the addition side, so re-doing the subfloor completely would solve that issue i think. submitted by /u/evdiggitydog [link] [comments]

Apr 1, 2025 - 03:16

Okay so big addition in my newly aquired fixer. Built in the 80s. Uses a pretty nice tongue and groove 2X6 subfloor BUT its on over 5ft on center. The floor bows a bit in between the floor beams. The room also slopes downwards to either side from the middle. I am not sure i want to try to raise the entire side of the house. I was thinking of either putting a new osb subfloor over the decking and shimming it level. (Its over 1in low over 10ft). Or ripping it out all of the tongue and groove and putting joists in between the 5ft centers on hangers and throwing down some 7/8 tongue and groove OSB on it like a normal house. Also my transition from the addition to the rest of the house is ALREADY over 1/2in high on the addition side, so re-doing the subfloor completely would solve that issue i think.

submitted by /u/evdiggitydog
[link] [comments]