Prefabricated chimneys still require protection against leaks, and that’s what a chase cover is for. Chase covers are metal coverings that are installed at the top of the chase, just like a crown on a masonry chimney.
Unfortunately, many stock chase covers are aluminum, which fails to stand up to rain year after year. As a result, these covers quickly rust through and can leave your chase stained and unprotected. Aluminum may seem like a good idea for your wallet, but stainless steel is a much better investment.
Chase cover SootAway.