What Is Fumed Oak Flooring

Fumed, or smoked oak is oak wood flooring which has been treated to change its colour. Fuming or smoking involves putting the oak into an enclosed environment in which ammonia is introduced into the atmosphere. This enclosed environment might be a closed tank or a sealed tent or some form of container into which only a relatively small amount of ammonia is introduced. The effect of the ammonia in the air is that the colour of the wood is changed.

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It is a common mistake that fuming or smoking oak involves the application of the ammonia to the oak, but this is not the case.  The change in colour comes about from the wood’s reaction to the presence of ammonia in the atmosphere.  Effectively what happens is that the ammonia causes the tannins in the wood to be brought to the surface.  The closer the tannins are to the surface, the darker the wood will appear.  The longer the wood is exposed to the ammonia, the darker it becomes.  The results obtained from fuming or smoking will range from a rich brown colour to almost black.

Essentially, the intensity of the colour and the tone of the colour will depend upon the length of time the wood stays in contact with the ammonia fumes.  Periods of as little as twelve hours will provide a lightly fumed effect and 72 hours a darker result.  Furthermore, the higher the temperature in the chamber, as you would imagine, the quicker colour change results will appear, but not only that, the tone will be affected.  Hotter temperatures typically introduce red tones and cooler temperatures green tones allowing for creativity when it comes to the fuming or smoking process.

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