We have treated our full sun Thermo ash decking with this oil. Could be processed easily and has initially also looked great. But after the first winter, the pigments contained began to flake, which was getting worse and uglier. When we found that the color you can scrub with abrasive foot movements on wet wood in places, my husband this summer everything sanded wet because it was really unsightly. You have to take it well that you used completely unpigmented oil for care. Probably Thermo wood is so narrow pores that the pigments remain only are laidback and are superseded by weather influences.
We would never buy this expensive color again and not recommend it!
