Thermally modified wood can be cleaned using a damp sponge or rag. Wood can
also be sanded with sandpaper in case of deeper damage.
Over time, heat-treated wood will become grey outdoors. This is above
all due to the UV light from the sun. To prevent this colour change,
thermally modified wood can be coated with an UV-protectant oil or wax.
At the same time, a grey colour looks good on our outdoor furniture in combination with shining stainless steel.