Originally posted by gramar I visited the hall today and can only vouch for the rooms to which the public has access and saw no damp. I've often wondered, when building a dwelling submerged in water, what type of construction is necessary to future proof it.
Stone works below water. Brick does not, nor lime plaster. Brick, mortar, and lime plaster eventually react with water by dissolving the soluble lime salts that hold these materials together. Rising damp ascends through the masonry over time as the deterioration progresses. The manor photo shows the rising damp line on the masonry as a belt of gray above the water line. The manor appears to be of hewn stone but may be limestone or may have been constructed with lime mortars.