I have a problem. We are trying to restart a project that a previous owner had shut down prior to selling to our client. The house is a 20's era frame house where the interior finishes had been stripped out leaving a shell. There is no sheathing behind the old "teardrop" sideing. No sheathing, tar paper/building felt, nuthin, zilch.
The previous owner had done a limited addition but had only put housewrap over the studs prior to installing siding. I am very concerned that the this thing is gonna leak like the titanic. My inclination is to advise the client to pull all the siding, install sheathing with a building wrap, then reside.
Is there an alternate such as spraying urethane into the cavities that might skin over to block exterior moisture intrusion or is it what it is? Any thoughts would be appreciated.
PS-Sadly I can't seem to rotate the attached image.