ALS Chimneys blog

Why do I need a Chimney lining?

A chimney is an exhaust pipe for your home. It is a vertical/near vertical structure that acts as the main ventilation source for hot flue gases and smoke from a boiler, stove, fireplace or furnace so that it is able to disperse these toxic gases outside the building it inhabits. Chimney linings are there to act as a protective barrier between the chimney and the home.

The lining itself acts as a protective barrier between acidic steam generated from the fire which damages the plasterwork and can cause corrosion inside the chimney breast. This acidic corrosion can then burn its way through steel and brick causing damage to both the chimney structure and inhabitants of the building through dangerous CO emissions, a side effect of the smoke not being able to disperse correctly.

How do I know if I need my existing chimney lining updated or replacing?

  • You are having a new fire, fireplace or stove installed and the chimney needs to be sized correctly to ensure it is safe and efficient
  • The flue is leaking smoke and fumes (carbon monoxide) into other rooms or part of the building
  • You’ve noticed staining on the chimney walls (inside or outside)
  • You’ve noticed condensation on the inside of the walls near the chimney
  • The flue is cold very quickly after use
  • You think the flue is too big for your heating appliance
  • You’ve noticed some erosion on the flue surface near the entrance

ALS Chimneys offer a wide range of both commerical and residential chimney linings to suit all your chimney needs. If you are unsure about the condition of your chimney, wish to conduct a thorough evaluation, or want advice on the right lining for your chimney then please don’t hesitate to get in touch with our fantastic customer services team who will be able help.