Forum Archive

I am renovating a brownstone and have
removed the interior plaster from exterior brick walls, have furring strips
> up and ready to Sheetrock. I would like to spray foam insulation in
> cavity but am scared of creating a vapor barrier that would keep the
> furring strips and the old wood joists which are pocketed into the
> brick wet, thereby creating a mold or rot problem. The floor joist and lathing
did not rot (except on 1st floor which is 3 ft below grade) for 95
years, but I am worried about changing the conditions and creating a moisture
problem / mold/ rot.