Condensation Basics
Condensation in old buildings is a common problem. Condensation occurs when moist air (usually warm moist air found indoors) comes in direct contact with colder surfaces (e.g. walls, window panes).
This building is from 1898 and it has been just purchased by a new owner, a building "enthusiast" who intended to refurbish it as part of a DIY project. The owner has just stripped the walls by removing all wallpapers and…