Mid-renovation on 100yr old home. Second floor wall (so exterior wall) going onto an enclosed porch had pine boards over the brick. Pulled off one wall to paint and expose some brick (which was already painted) and found this gaping hole where the door jamb starts and meets the floor. Crumbled brick and lots of dust is all that was there, just got everything out with my hands / a small brush.
I imagine this will involve some time of rebuild, but with the constant temperature fluctuation of that active steam radiator pipe, I can’t help but think it’ll turn my repair into dust in just a few years. I could be dead wrong so please correct me.
What is the correct, long form way to repair this sort of issue that was not standard to the building when originally built. (Steam radiators were added to multiple enclosed sunrooms, probably sometime in the 50s.)
Thank you masons