What does the 'Ready to Burn' law mean for your wood stove?

If you own a wood-burning stove or an open fire in the UK, you have likely heard about the 'Ready to Burn' legislation introduced by DEFRA (Department for Environment, Food & Rural Affairs). While new environmental laws can sometimes seem confusing, this regulation was put in place to protect both the air quality in local communities and the physical health of your heating appliances.

Understanding this law is crucial for anyone buying firewood. In this guide, we break down exactly what the rules mean, why traditional 'wet wood' was banned, and how to ensure your home stays warm and fully compliant this winter.

Historically, many homeowners bought freshly cut, unseasoned wood—often referred to as 'wet wood' or 'green wood'. This wood naturally contains a high moisture content, often reaching between 40% and 50%.

Under the new regulations, it is illegal for retailers to sell firewood in volumes under two cubic metres unless it has a verified moisture content of under 20%. The law aims to phase out the burning of damp wood entirely, replacing it with cleaner, more efficient alternatives.

Burning wet wood is not just bad for the environment; it is terrible for your stove and your wallet. When you put damp wood on a fire, the heat energy is wasted on boiling and evaporating the trapped water rather than heating the room. This leads to three major problems:

• Low heat output: The fire will smoulder, produce very little heat, and struggle to keep a room warm.

• Heavy smoke and pollution: Evaporating water creates excess smoke, which releases high levels of harmful particulate matter (PM2.5) into the air.

• Creosote build-up: The unburned volatile gases mix with water vapour, travelling up the chimney and condensing into a highly flammable, tar-like substance called creosote. This is the leading cause of chimney fires in the UK.

To make buying compliant wood easy, the government introduced the 'Ready to Burn' certification mark. When purchasing bags of logs or bulk pallets, simply look for the official red and white logo. This mark guarantees that the wood has been independently tested and verified to contain less than 20% moisture.

The most reliable way to comply with the legislation and get the best performance from your stove is to use kiln dried logs. Unlike naturally seasoned wood, which can take years to dry and depends heavily on the weather, kiln dried logs are placed in a giant oven (a kiln) that extracts the moisture rapidly and consistently.

Because the moisture content is strictly controlled and brought well below the 20% legal threshold, these logs ignite faster, burn significantly hotter, and leave behind minimal ash, making them the ultimate choice for a clean, efficient fire.