The Ultimate Guide to Kiln Dried Wood, and why it matters. 

There is nothing quite like the crackle and warmth of a real wood fire. Whether you are settling down on a chilly evening with a log burner, firing up a pizza oven, or gathering around an outdoor fire pit, the quality of your firewood makes all the difference.

When buying firewood, you've probably come across the terms seasoned logs and kiln-dried logs. While both can be suitable for burning, they are not the same and understanding the difference can help you get more heat, cleaner fires, and better value for your money.

In this post we’ll explain exactly what the difference is, and why it matters. 

Kiln Dried vs. Seasoned Logs: What's the Difference?

If you have ever struggled to light a fire, watched it hiss and sputter, or noticed a thick layer of black soot coating your stove glass, you have likely been burning wet or poorly seasoned wood. 

Seasoned firewood is timber that has been left to dry naturally after being cut and split. The drying process relies on airflow, sunshine, and time to reduce the moisture content. Typically, seasoned logs are dried outdoors for between 12 and 24 months, depending on the species of wood, weather conditions, and how well they have been stored. Although well-seasoned firewood can burn effectively, the moisture content varies considerably. One batch may be perfectly dry, while another may still contain too much moisture to burn efficiently. On average, seasoned wood rarely drops below a 25% moisture content (unless we enjoy an exceptionally dry summer). This means you’ll have a fire that is hard to light, much more smoky and because the energy is being used to evaporate the moisture rather than give heat out into the room, your fire won’t actually be that warm. 

Kiln-dried firewood is dried in a temperature-controlled kiln where warm air circulates around the logs. It’s dried at temperatures around 70°C for roughly 3 to 4 days. This controlled, high-heat process rapidly extracts moisture from deep within the wood fibers, bringing the moisture level down to below 20%. Because every batch is dried under controlled conditions, you receive a consistent product with predictable performance. The result is dry, lightweight wood that is ready to burn cleanly and efficiently the moment it arrives at your door. No spitting and hissing, less smoke, less particulates and soot in your chimney or the air, more heat and a much nicer burning experience. This also means less frequent chimney sweeping and reduced risk of chimney fires caused by creosote build-up.

At a Glance

 

The Logpile Kiln Dried Log Range

We hand-pack our premium logs right here in Hampshire, delivering them in sturdy, recycled cardboard boxes or convenient bulk bags on pallets. To suit your specific fireplace or cooking needs, we offer a diverse selection of sustainably sourced British hardwoods:

Birch: The ultimate quick-starter. Birch has a slightly lower density, meaning it lights with ease and produces a bright, lively flame—ideal for short fires or getting your burner up to temperature quickly.

Ash: Widely loved as the perfect "all-rounder". Ash provides a steady, reliable heat with a bright, beautiful flame. We also offer Short Ash 6" Logs—specifically split thinner and cut shorter to perfectly fit compact stoves and smaller log burners.

Beech: Denser than ash, beech delivers a very high heat output alongside a long, highly consistent burn.

Oak: A traditional favorite for long winter nights. Highly dense, oak burns slowly and steadily, giving off incredible heat for hours. It is also highly popular for smoking food on BBQs!

Mixed Hardwood: Our signature blend of Birch and Ash. You get the fast-lighting, cheerful flames of birch combined with the steady, sustained heat of ash.

Specialty Cooking Logs: We also supply specialised Cherry Wood logs for beautiful BBQ aromas, alongside custom-sized Pizza Logs designed to fit Gozney Dome and mini pizza ovens perfectly.

Proudly Certified: Firewood You Can Trust

We do not believe you should have to choose between exceptional burning performance and environmental responsibility. That is why our entire range is backed by the UK’s two most rigorous firewood certifications:

Grown in Britain (GiB)

This certification guarantees that every single log we sell is sustainably harvested from responsibly managed woodlands right here in the UK.

• Supporting Local Forestry: Your purchase supports UK rural economies and woodland management.
• Lower Carbon Footprint: Because our wood doesn't travel across continents on cargo ships, it has vastly fewer transport miles attached to it than imported alternatives.
• Full Traceability: You can rest easy knowing exactly where your timber came from—no mystery sources.

Ready to Burn

Introduced as part of the UK’s Clean Air Strategy, the government-backed Ready to Burn scheme ensures that domestic firewood meets strict environmental criteria. Our certification proves our logs have been independently tested and verified to keep moisture levels below 20%. This ensures up to 80% fewer emissions than wet wood, meaning less smoke, much cleaner air for your neighborhood and protection from dangerous tar build up in your chimney. 

The Bottom Line

Both seasoned and kiln-dried firewood have their place, but if you're looking for the best overall performance,  Logpile's kiln-dried logs are difficult to beat.

They light more easily, burn hotter, produce less smoke, and provide consistent quality throughout the year. Whether you're heating your home, cooking in a pizza oven, or enjoying an evening around the fire pit, choosing properly dried firewood makes all the difference.

At Logpile, we carefully source and prepare premium kiln-dried hardwood logs so you can enjoy reliable warmth, cleaner fires, and dependable performance every time you light your stove.

If you're ready to experience the difference, explore our range of kiln-dried firewood and have quality logs delivered straight to your door.

Kiln Dried Firewood FAQs

At Logpile.com, we hear from hundreds of stove owners every week. To make life easier, we’ve rounded up the absolute most common FAQs regarding general firewood, kiln dried logs, and mastering your woodburner into one definitive guide. 

What exactly is a kiln dried log?

Kiln dried logs are firewood that has been loaded into a large, thermally insulated chamber (a kiln) where controlled heat and airflow rapidly extract moisture. While natural seasoning takes years, kiln drying safely reduces the moisture content of the wood to under 20% in just 3 to 4 days, making it ready to burn immediately.

Kiln dried vs. seasoned wood: Is it really worth the switch?

Yes, and it actually saves you money.

Seasoned wood is left outside to dry naturally, which means its moisture level heavily depends on the British weather—rarely dropping below 25%. With such a high moisture content, the energy and the heat is used to evaporate the moisture rather than give warmth out into your room. 

Because kiln dried wood is guaranteed to be under 20% moisture, it ignites faster, burns hotter, and produces significantly more heat per log. You end up using far fewer logs to achieve the same room temperature, making kiln dried wood the more economical and efficient choice.

Properly kiln-dried logs also burn with a cleaner flame, producing significantly less smoke and helping your appliance operate more efficiently. This means less frequent chimney sweeping and reduced risk of chimney fires caused by creosote build-up.. plus a much nicer experience. Whether your keeping your living room warm through the winter or enjoying an evening fire pit in the summer; kiln dried wood means a far less smoky, smelly experience and a cleaner, cosy atmosphere instead. 

Why does moisture content matter? 

When logs contain excess moisture, much of the fire's energy is spent evaporating water before the wood can burn properly. This means:

• Lower heat output
• More smoke
• Harder to light
• More frequent refuelling
• Greater soot and creosote build-up in your chimney

Kiln-dried logs avoid these problems because they contain significantly less water. Burning wood with a moisture content above 20% will generally produce more smoke, less heat, and increased chimney deposits. 

Why are kiln dried logs more economical than seasoned logs?

While seasoned wood can sometimes be cheaper upfront, it actually costs more in the long run, because dry wood produces more usable heat.

Imagine buying a bulk bag of logs where a significant portion of the weight is simply water. That water contributes nothing to heating your home.

Because kiln-dried logs contain less moisture, more of every log becomes useful fuel.

The result is:

• Hotter fires
• Longer-lasting embers
• Better efficiency
• Less fuel needed to achieve the same warmth

Kiln dried logs release their heat energy immediately, meaning you burn fewer logs to keep your room at the same cozy temperature. Many homeowners find they actually burn fewer kiln-dried logs compared with cheaper, wetter alternatives.

Which is better value; kiln dried or seasoned wood?

Seasoned logs often have a lower purchase price. However, price alone doesn't tell the whole story.

When comparing overall value, consider:

• Higher heat output
• Fewer logs needed
• Faster lighting
• Cleaner burning
• Less chimney maintenance
• More enjoyable fires

Many customers find that kiln-dried firewood represents better value over an entire heating season because more of what they purchase becomes usable heat, there’s less damage to their appliance, and the experience is much more pleasant. 

How should I store my kiln dried logs?

Because kiln dried logs have such a low moisture content, they act like a sponge. If left out in the rain, they will quickly soak up water. Even the best firewood can become damp if stored incorrectly.

Store your logs in a dry, well-ventilated log store that is raised off the ground and protected from overhead rain. Make sure there's open or slatted sides to allow good airflow all around the stack, and avoid storing them directly against exterior walls. 

With proper storage, kiln-dried logs can remain in excellent condition for many months.

Can I use kiln dried logs immediately?

Yes! Thanks to our Ready to Burn certification, our logs are guaranteed to be ready for immediate use the second they are delivered to your door. No extra seasoning or drying time is required. 

Hardwood vs. Softwood: Which is best?

For everyday heating in a woodburner, hardwood is superior. Hardwoods (like Ash, Oak, and Birch) come from slow-growing deciduous trees, making the wood incredibly dense. They burn slowly, radiate heat for hours, and need less frequent reloading.

Softwoods (like Pine or Spruce) are less dense. They light incredibly fast and burn intensely, making them fantastic as kindling to start your fire, but they burn through too quickly for primary heating. You’ll need to add more logs to the fire, much more often. 

Which hardwood should I choose?

At Logpile.com, we break our premium range down by how you use your fire:

Birch: Perfect if you want bright, lively flames that catch fire instantly. Ideal for shorter evening burns.

Ash: The ultimate all-rounder. It gives off a steady, intense heat and a beautiful flame. We even offer short 6-inch cuts for compact stoves!

Oak: The heavyweight champion. It takes a little longer to light, but it burns for an incredibly long time, leaving a bed of glowing, super-hot embers.

To give you the perfect balance, our kiln dried hardwood range also comes in a mix of Ash and Birch.. Approximately 30% Birch to get your fire roaring, and approximately 70% premium Ash to keep your fire burning long into the chilly evenings. 

Why does my fire die down when I add a fresh log?

A common mistake is bringing a perfectly dry, but freezing cold log straight from an outdoor wood store and tossing it onto the flames. The ice-cold log acts like a heat sponge, drastically dropping the temperature inside the firebox.

Logpile.com Tip: Bring an evening’s supply of logs indoors 24 hours before you plan to burn them. Letting them reach room temperature ensures they ignite instantly without suffocating your fire.

Why does my woodburner glass keep turning black?

This is almost always caused by burning wet or "green" wood. When wood has a high moisture content, the fire spends all its energy evaporating the water instead of generating heat. This produces cool, smoky combustion and releases heavy tar and soot that instantly bakes onto your stove glass. Switch to kiln dried firewood with a moisture level under 20%, and your glass will stay crystal clear.

Can I use these logs in a multi-fuel stove?

Absolutely. Our kiln dried hardwood logs are perfect for multi-fuel stoves, dedicated wood burners, open fireplaces, fire pits, and pizza ovens. Just make sure to choose the right size for your appliance.

How should I set the air vents on my stove?

When lighting your stove, open both the top and bottom air vents fully to feed oxygen to the kindling. Once the fire is thoroughly established and the main logs are burning, completely close the bottom vent (which feeds air underneath). Wood burns best from the top down on a bed of ash. Control the burn rate and temperature purely using the top vent, throttling it back until you have a calm, steady flame.

What is the "Ready to Burn" scheme?

"Ready to Burn" is a UK government-backed safety and environmental certification. It guarantees that the firewood you are buying has been independently tested and verified to have a moisture content below 20%. Burning certified Ready to Burn wood reduces particulate emissions by up to 80% compared to wet wood, keeping our air cleaner and protecting your chimney from dangerous tar buildup.

Can I burn treated wood or pallets in my stove?

Absolutely not. You should never burn painted, stained, or pressure-treated wood, nor manufactured boards like MDF or plywood. The glues, chemicals, and preservatives used in these materials release toxic, corrosive fumes into your home and the environment, and they will rapidly ruin the internal components of your expensive woodburner. Stick purely to natural, untreated hardwood.