I just installed IKEA vanity and it requires re-run new PEX. Since behind the wall is concrete at corner wall, only way is to run PEX outside the 2x4 like picture below.
But now it opens a hole like that and sometime I can feel wind blow into it since the left side is the garage.
And it’s not simple to cover with drywall as the pex is in the way.
What are my options?
Just stuck some insulation behind the 2x4 and prevent wind blow into it
Duck tape or some kind of thin panel?
Make a “box” extruding outside. This is complicated as I have to deal with clearance from the ikea drawers