I have my stove on the second story, and am getting an insulated liner placed in my chimney. They're breaking out the tile liner from the flu to make room for the 6" stainless pipe with insulation wrapped. Question, they say they'll seal the clean out door in the basement and put a cap on the pipe just below where the thimble enters it. Is this the common method of install? I guess to clean it after brushing I'll need to use a vacuum to clean all the knocked down residue? I assume either from the top, or maybe insert a shop vac hose in through he thimble to get all the knocked down stuff out of that chamber? Just wondering if this is common...I think I would rather be able to brush down from the top right past where the stove enters the pipe and shovel it out of the clean out door below. They must be offering this sort of setup for a reason, and am comfortable going with their suggestion (they're reputable in my area). I just want to make sure I'm left with something thats easy to clean and not a pain in the neck.