Joist refit & levelling

[evyxmsj]

Hello all,

First time posting. Apologies if I am posting in the wrong place! I am a little stumped on getting some new joists level/flat with the existing part of my living room floor. A few details to start:

- Suspended timber ground floor
- Replacing four joists on the end of my living room near bay window
- Joists are 47 x 95 mm
- Full span is 3.6 m span (at 400 mm centres).
- a sleeper wall splits the span to two 1.8 m lengths
- will be fitting chipboard then carpet overlay

As I am replacing only a few of the joists in the room, I was intending to re-use the brick pockets and just form a scabbed joint at the sleeper wall. I thought about joist hangers, but I wasn't sure how to get them to match the levels of the joists to remain.

However, after hanging a few, I noticed that the top of the sleeper wall is about 30 mm higher than the brick joist pockets in the main walls---presumably the house has settled over time more than the sleeper wall. Unfortunately, I can't shim up the joist ends as there is not much vertical clearance in the brick pockets (I had to use a mallet to get a joist in).

So my main question: is a mid-floor 'ridge' like this going to be an issue with the chipboard? I thought about making some wooden wedges to flatten the joist tops, but then tying into the existing joists to remain might be a problem... I can try to align a chipboard joint along the crown of the floor?

Thanks loads for your help. This project has been a HUGE learning curve for me. Sorry for the long post!

Evyx

 

[gregers]

if im reading this correctly why dont you just cut the bottom of the joists so they sit lower on the wall pate?

if im not plz post a pic or 3 so i get a better idea.

 

[evyxmsj]

Thanks Gregers

I thought about it, but wasn't sure if that would be a problem structurally (as the joists are only 2x4s really). Also, I would have a flat section of floor, tying into the existing floor, which still would have a crown! Not sure if that is possible...

 

[gregers]

cutting say 10-15 mm out of a joist isnt a big deal in the grand scheme of things if at all its that amount???

post some pics.