I recently has a balcony rebuilt. They used Sikkens Cetol 1,23. I noticed it was applied wrong, meaning Cetol 23 as fist coat, then Cetol 1 as last two coats. When I told them about this, I was told it was fine. Can you please tell me if this is true and if how, and if it’s not true then what are the effects of this? Thank you for your knowledge.