If you are using your chimney regularly, then it is better that you don’t have any problems with falling debris in future. This means that if there are leaves or twigs obstructing the opening of fireplace, then they should be removed before lighting up fire inside it again. The same applies for when snow melts during winter season and water starts dripping down from top of bricks which can damage them further apart from creating corrosion issues too soon after its installation! Roof brushes come at different sizes depending upon whether they will fit on roof tiles or not so make sure what size would work well for your needs beforehand.. You also want one that has stiff bristles which won’t bend when cleaning hard surfaces like firebrick or concrete floors in front of an electric furnace/fireplace units etc.