Is it safe to burn driftwood in an indoor wood stove near the coast?

Short answer

Why people ask this

People with homes near the coast sometimes collect driftwood and wonder if it’s a convenient, free fuel for an indoor stove. The salty, humid coastal environment also raises questions about corrosion and indoor air quality. Driftwood often looks dry and seasoned, and it’s easy to assume the ocean has “cleaned” it. Others want to reduce costs or enjoy the aesthetic of beach wood without realizing how salt and marine pollutants behave when burned indoors.

When it might be safe

There are no commonly accepted situations where this is considered safe.

When it is not safe

• Salt-laden driftwood can generate corrosive hydrochloric acid and chlorinated compounds when burned in an enclosed stove and flue.
• Coastal humidity and salt air amplify corrosion of stove parts, stainless liners, and caps already stressed by salty combustion gases.
• Driftwood often contains sand, shells, and moisture that worsen creosote formation and cause clinkers and sparking in indoor appliances.
• Pieces may be contaminated with marine pollutants, finishes, or treated lumber, which are unsuitable for indoor combustion.
• Local coastal ordinances and appliance manuals commonly prohibit burning beach wood, risking code violations and warranty issues.

Possible risks

• Accelerated corrosion and premature failure of the stove, flue liner (even 304 stainless), and chimney cap in salty coastal conditions.
• Irritating or toxic indoor fumes (e.g., HCl and dioxins) from salt and contaminants, degrading indoor air quality.
• Higher creosote buildup from damp, mineral-laden wood, increasing chimney fire potential in indoor systems.
• Incomplete combustion and elevated carbon monoxide risk in a tight, indoor environment.
• Insurance or warranty complications if non-approved fuels like driftwood are used.
• Persistent smoky, briny odors that linger longer in coastal humidity.

Safer alternatives

• Use properly seasoned inland hardwood from a reputable supplier (split, <20% moisture) for clean indoor burning.
• Choose kiln-dried firewood or certified low-emission manufactured firelogs approved for your stove.
• Consider a pellet stove with high-quality pellets and a corrosion-resistant flue system rated for coastal use.
• Reserve driftwood for non-burning uses (decor, crafts) or dispose of it per local coastal guidelines.
• Schedule regular chimney inspections and select a 316Ti or higher-grade liner if you heat frequently in a coastal home (with approved fuels only).

Bottom line

Do not burn driftwood in an indoor wood stove near the coast. The salt and possible contaminants create corrosive, smoky combustion that harms your stove and flue and degrades indoor air. Stick to clean, seasoned, approved fuels and follow local codes to protect your home and air quality.

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