- Please be guided by our pictures which visualize the difference between: a non-smoked floor, a single-smoked floor and a double-smoked floor. By smoking the wood the overall colour tone get's darker. This effect is stronger with the double smoked treatment which will give the overall look of the floor a deeper dark colour. Obviously there will be a beautiful natural colour variation between the individual boards, since not every board will react in the same way to the smoking treatment. For this reason a non-smoked floor, will mostly be more uniform in colour then a smoked floor.