When the flue is open you can't see anything, but I could feel it on the louver (with gloves on!). The cap has been off for several years, and I had chimney monsters nesting this past spring, and ...
Is it necessary to have the chimney cleaned by chimney sweeping service if I use a gas imitation fireplace log (no wood) exclusively? If so, what is the reason? What is the root cause for chimneys ...