Using a Fireplace Again After Years Unused

Why a first fire is a bad test

A chimney that has not been used is not necessarily a chimney in good shape. Years of weather, animals and settling can leave it blocked, cracked or worn, and none of that is visible from the room. The CPSC advises that chimneys and flues should be clear at all times so toxic flue gases, including carbon monoxide, can leave the house, and notes that mortar fragments, bird nests and other debris can block them. A first fire is the wrong way to find out. Instead, have it checked by a professional.

Which inspection fits

CSIA says a Level 1 inspection is the minimum when the appliance and venting system are unchanged and will be used as before. A Level 2 is required when the system changes (for example a change of fuel, relining, or a dissimilar appliance), when a property is sold or transferred, or after an event that may have damaged the chimney. Level 2 includes a visual check of the flue liner’s interior, with video scanning or another method. Because a long-idle chimney has an unknown history, ask the inspector which level makes sense; the video scan covers the part you cannot see from the room. CSIA also says that if a chimney is too dirty to evaluate, it must be swept before the liner can be assessed. See the three inspection levels and chimney camera inspection.

What the inspector looks at

• The flue. Blockage from nests or debris, and deposits. CSIA’s procedure calls for sweeping when buildup reaches about 1/8 inch.
• The liner. Cracks, gaps and missing mortar between tiles. See clay vs stainless steel liners.
• The firebox and damper. Loose or missing mortar, cracked firebrick, and whether the damper moves freely and closes fully. See damper repair and replacement.
• The smoke chamber. Parging in good condition and a sealed transition to the flue. See smoke chamber repair.
• The top. Crown, flashing and cap. See crown vs cap vs chase cover.
• Water entry. Staining or leaks near the chimney. See why is my chimney leaking.

What happens next

The result will usually fall into one of three outcomes: cleared for use as is, cleaning needed, or repairs needed first. Common repairs include crown repair, a new cap, liner work and repointing. If the inspector finds a blocked or damaged flue, do not use the fireplace until it is fixed. See signs to stop using your fireplace. If the fireplace is factory-built, see masonry vs factory-built chimneys, because damaged metal chimneys must be replaced rather than used, according to CSIA.

Other things to sort out before the first fire

• Working carbon monoxide alarms. The CDC advises battery-operated or battery-backup CO alarms near every sleeping area, with batteries checked each spring and fall.
• Dry, appropriate fuel. See dry firewood and storage and what not to burn in a fireplace.
• A plan for yearly care. NFPA 211, as cited by CSIA, calls for at least yearly inspection. See how often to inspect and clean.

If the fireplace has been closed off or the flue is no longer used for the same fuel, see unused flues and fireplace openings, and if a fireplace was gas before, gas vs wood venting basics.

Frequently asked questions

Next step

Booking an inspection is the first step. Request a visit or call (862) 225-6529. We are a registered (NJ HIC #13VH14312300) and insured New Jersey home improvement contractor.