Warning: Found out my brush length was way off after 12 years of sweeping
I was reading through an old trade manual from 1987 that my mentor left me, and it said the bristle length on a chimney brush should be exactly 1.5 times the flue diameter, not just whatever fits. Measured my flue today, it's 10 inches, and my brush has 8 inch bristles, so I've been missing the corners for over a decade. Anyone else ever check their brush specs against the actual flue size?