To caulk or not, above a 1925 redwood window head jamb?
I was just pulling out the caulk gun, when I noticed this head jamb is tapered.
The house is 1925 stucco in USDA zone 10b (San Francisco Bay Area). So did the original builders intend this as a form of weep? Instead of caulk is it actually better to leave the edge open, or cut a weep into the caulk?
The stucco wall in question is settling, and has various patched cracks. So, in theory at least, water may weep down the old tar paper behind the stucco, during the rainy season. The walls are at least partially filled with cellulose, which reduces drying to the interior lathe and plaster.