by MtnDon » Sat May 30, 2020 6:50 pm
There are corrective things that are 2 part epoxies. The ones that work are usually expensive when needed in a large volume. I have not used any in many years. We got to where the only remedial work we would do was tear out the rot and replace it. 'Glassing over is just hiding the problem, IMO, and does not repair and structural problems there may be.
A lack of eves can exacerbate the water problem. There is often not a simple cheap solution. A proper exterior wall has overlapping layers that direct water that may leak into the wall to the outside. Old homes often have many deficiencies in that. If the home is that old does it have any wall insulation? If the structure is basically solid for the most part it may be worth doing a reside with new windows, doors and insulation finished off with new siding, stucco, whatever. It ends up saving energy costs and makes it worth more. But it needs to have good bones to begin with. Some don't and aren't worth a proper fix. In that case almost anything is better than nothing.