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Firewood is wood that has been cut into pieces for burning, usually in a wood burning stove or boiler.

The Woodsure quality assurance scheme for firewood applies technical standard ISO 17225-5 and certifies various types and species of wood, including hardwood, softwood and mixed products for firewood. Woodsure certification checks length, diameter and moisture content.

In the case of firewood for immediate use in a domestic stove this would be 20%.  Log boilers on the other hand may require wetter fuel such as woodchip and so moisture content on the scheme is not limited to 20% . This does not fall under the government legislation for firewood.

In our Woodsure laboratory, we test the moisture content using an oven testing method, to ensure accurate results. If you want to quickly check the fuel you have had delivered, for firewood you could use a pin meter on a freshly split log, or for chip or hog fuel you could use a specially designed probe or bucket meter. Only an oven test can be used to test moisture content of briquettes.

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Storing firewood indoors and outdoors – what do you need to know?

1 / 10

How to use a moisture meter

2 / 10

A guide to burn responsibly

3 / 10

The importance of drying wood

4 / 10

How to check firewood moisture content

5 / 10

How to store your firewood

6 / 10

The importance of wood fuel quality

7 / 10

Are you in a Smoke control area? (SCA)

8 / 10

How to store your fuel correctly

9 / 10

The case for woodfuel

10 / 10

Other Fuels


Hog fuel




Severn House

Unit 5 Newtown Trading Estate

Green Lane


GL20 8HD

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