Can you use expanding foam to fill gaps between a timber frame and OSB sheathing?

[plockhart]

I'm self building a timber framed garden room. The construction from outside to inside is:

1. weatherboard/cladding
2. ventillation battens
3. breathable membrane
4. osb sheathing
5. timber frame (with PIR in the middle)
6. PIR overboarded

 

I have the 4 walls squared and upright, the diagonals lengths are the same, and have ended up with a significant misalignment at an external corner. It's square and flush at the bottom, and at the top it diverges by about 20mm, and tapers down to 0mm misalignment 1m down. I am thinking of creating blocks/cuts of timber along that misalignment so the osb sheathing can go on flush and be supported along that top bit. As for the gaps that it leaves, can/should I use closed cell expanding foam to fill those voids?

 

Thanks in advance

 

 

Edited September 8, 2024 by plockhart
forgot layers

[JohnMo]

Cut a furring strip to match the miss alignment nail or screw in place - foaming the gaps is a bodge.

[nod]

If you wait till you are boarding Board the side that is stuck out and let it fly past Foam the void Board the other side Then cut the excess PB Drive some screws through a couple of hours later 

[plockhart]

Thanks all!