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Why Sweep Your Chimney Before the First Fire

What creosote is, why it's a fire risk, the signs your chimney needs attention, and how often to sweep.

Short answer

Sweep and inspect your chimney before the first fire of the season. Creosote from past fires is flammable, and months without use can leave nests, leaves or debris in the flue. A yearly inspection catches both.

What creosote is

When wood burns, smoke cools as it rises and leaves soot and creosote on the inside of the flue. Creosote is sticky, tar-like and flammable.

Why before the first fire

On the Westside, many fireplaces sit unused for most of the year. Birds nest in uncapped chimneys, and leaves and debris collect. A sweep before the season clears the flue so smoke goes up, not into your room.

Signs your chimney needs attention

  • Smoke comes back into the room
  • A strong campfire smell on warm days
  • Black flakes falling into the firebox
  • Sounds of birds or animals in the chimney
  • Fires are hard to start or keep going

How often to sweep

Have the chimney inspected once a year if you use the fireplace, and swept whenever there's buildup. If you burn wood often, you may need a sweep more than once a season.

What a sweep includes

We protect the hearth and floor, sweep the flue, clean the firebox and smoke shelf, check the damper and cap, and show you photos. If the chimney has no cap, we can install one.

FAQ

Related question

Do gas fireplaces need chimney sweeping?

Gas fireplaces don't make creosote, but the vent or flue can still be blocked by nests or debris, so a yearly check is still a good idea.

Ready for cleaner air at home?

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Call (310) 984-7261