Had a nice little foundation leak during the last rain storm. Installed a drain line last fall to divert two downspouts and front walkway run off away from the house which helped a lot. Front walkway and a big retaining wall next to it ultimately need to be removed and reinstalled with proper grading and drainage. That’s going to be a huge and expensive project so for now I’m just replacing all the worn out concrete sealant and hoping for the best.
Id argue 90% of home ownership boils down to trying to keep outside air and water out of the house. If you can do both of those, you’re winning the battle.
but you also need to exchange the air inside often, so you need ventilation too.
A big part is also getting the inside water out.
I must cool the inside air or else I’m still outside.