If you buy firewood in bulk, you’ll want to make sure it lasts until you need it. Properly stored logs can provide reliable fuel for years, but poor storage can leave you with damp, mouldy wood that’s difficult to burn. So, how long does firewood really last in storage — and how can you make it last longer?
The Lifespan of Firewood
- Kiln-dried logs: When stored correctly, kiln-dried logs can last 3–4 years without losing quality. Their low moisture content makes them less prone to rot and mould.
- Seasoned logs: These can last 2–3 years, but they need more care. If exposed to damp conditions, they may reabsorb moisture and become unusable.
- Green wood: Freshly cut logs should not be stored for burning until they’ve been seasoned for at least 12–24 months.
👉 In short: properly stored dry logs will last several years, but the drier the wood is to begin with, the longer it will remain in good condition.
Factors That Affect Firewood’s Longevity
- Moisture Levels
- Firewood with a moisture content below 20% (Ready to Burn standard) will stay stable for longer.
- Logs with higher moisture are more likely to rot or attract mould.
- Storage Conditions
- Logs kept in a dry, well-ventilated space will last years.
- Firewood stored directly on soil or in damp sheds deteriorates quickly.
- Airflow
- Good airflow prevents mould and keeps logs dry. Stacked logs should never be completely sealed off.
- Type of Wood
- Hardwoods (oak, ash, beech) generally last longer than softwoods.
- Softwoods (pine, spruce) can decay faster if not stored correctly.
How to Store Firewood to Extend Its Life
- Keep it off the ground – use pallets, a log store, or raised racks.
- Cover the top, not the sides – use a roof or tarp to protect from rain, but leave airflow around the stack.
- Choose the right location – a sunny, breezy spot is ideal; avoid shaded damp corners of the garden.
- Rotate your stock – burn the oldest logs first and keep new deliveries separate.
Signs Your Logs Have Gone Bad
- Soft or crumbly texture (rotting).
- Strong musty smell (mould).
- Excessive smoke when burning (too much moisture).
If your logs show these signs, they may no longer be suitable for efficient burning.
Key Takeaway
With the right storage, kiln-dried logs can last up to 4 years, seasoned logs 2–3 years, and green wood needs at least a year before it’s usable. The secret to longevity is simple: keep your firewood dry, ventilated, and raised off the ground.
👉 All of our firewood is kiln-dried and Ready to Burn certified, giving you longer-lasting logs that store well and burn beautifully.

Kiln Dried Mixed Hardwood Logs (Bulk Bag)
Netted Logs 22 Litre