What is this black shiny stuff in my chimney?

The black shiny build up found in the chimney is called creosote glaze. This is a non-brushable type of creosote, formed from inadequate temperatures in the chimney. For more information. Steps must be taken to rectify the installation or operation of the appliance as this type of creosote burns very hot in the event of a chimney fire.

    Chimney with creosote glazing problem       Chimney with creosote glazing problem

Back to FAQ's