We have an 100-year old house in northern New England which desperately needs painting. There is a a company offering a spray-on, extra tough, ceramic coating system for a premium price that has a 20 year guarantee not to chip, crack or peel. Recommend or no?

1. Is this too good to be true?
2. Will it hurt our old house? Can it breathe?
3. Seems like repairs/ additions might be a problem?