The reason you need chimney sweepers is because the logs are typically held together with a wax-like substance and are a wood product, therefore these logs still produce creosote. The reason for chimney cleaning is Creosote, which is a product of combustion in your fireplace, accumulates on the walls of your chimney. This buildup is flammable and when the soot build up reaches 1/4" thick anywhere in the system, there is an increased risk of a serious chimney fire. Denver CO Chimney Sweep, Denver CO Chimney Cleaning, Denver CO Chimney Repair, Denver CO Chimney Sweeps, Denver CO Tuck Pointing, Denver CO Fireplace Chimney, Denver CO Chimney Flue, Denver CO Fireplace Repair, Denver CO Chimney Sweeper, Denver CO Chimney Services, Denver CO Brick Chimney, Denver CO Chimney Service, Denver CO C