Yes, the build up of soot, dust and small burn particles and with the formation of condensation on the inside of the glass when the appliance is turned on can leave dirty black run marks and cloudy stains on the glass surface. (a cubic metre of gas contains around a litre of water!)

In our experience the glass gets dirty on every glass fronted fire we sell.

The glass panels are easy for customers to remove for cleaning with over the counter glass cleaners.