Many west siders will be familiar with this, reputed to be the oldest house in Ottawa: It is located a half block east of the Westboro Loblaws. Work has been going on for a while to stabilize and repair the structure. Like a lot of building restoration work, or art restoration, much effort goes into undoing the previous version of restoration. In this case, the previous work involved adding a smooth coat of mortar between the stones. Alas, that mortar dried hard and waterproof. This trapped moisture between the stone inside the wall, which then liquified/eroded the sand-lime mixture inside … Continue reading Heritage repair