Main causes of black stove glass
Wet wood : Damp wood creates steam and tar, which stick to the cooler glass and form soot.
Poor airflow : Restricting air vents leads to incomplete combustion, causing smoke and soot buildup.
Slumbering the stove : Burning the stove too low for long periods creates more tar and soot.
Incorrect fuel : Burning treated wood, coal, or unsuitable fuels leaves heavy residue on the glass.
Clean stove glass shows :
Fires burning hotter and more efficiently
Reduced soot in the chimney
Lower emissions which improves safety and air quality
Tips to keep stove glass clean
Use dry, seasoned wood (under 20% moisture - test with a moisture meter)
Keep good airflow through the stove
Burn the stove hot with lively flames (keep in Optimal Zone using a stove pipe thermometer)
Avoid long smouldering burns
Use only natural, untreated wood
Cleansweep Vac Services will clean your glass for you when we sweep your chimney.
Regular chimney sweeping and stove servicing help maintain cleaner glass, safer operation, and better stove performance.


