Q Our home inspector recommended that we install a chimney cap on the older home that we are buying. The chimney has not had a cap in it’s 60 plus year life, so why put one on now?

A In my practice as a home inspector, I always recommend the installation of chimney caps. Chimney caps serve a variety of purposes. They keep animals such as birds, squirrels and rodents from entering the chimney and in some cases the crawl space. A 60 year old home may have had an oil-fired furnace in the crawl space or basement which would have been vented through the chimney. The vent pipe opening provides direct access for critters. It is not unusual for rodents to crawl down through the chimney into the crawlspace seeking a warm place to nest. Chimney caps also keep out rain and debris such as leaves that can collect in the flu. Chimney caps also serve as spark arresters. Most caps are not expensive, and your local chimney sweep can recommend the one that is best for your chimney.