I would contact flooring manufacture and ask them

You can use any type of mop as long as it's wrung out, not too wet, vacuum first. Found this info re steam mops & vinyl plank flooring that may be of interest... Vinyl plank flooring combines the durability of vinyl flooring with the appearance of hardwood planks. Unlike a solid vinyl floor, the narrow spaces between the planks make it vulnerable to damage from heat and moisture. Since a steam mop emits both heat and moisture, other cleaning methods may work better for your vinyl plank floor. Steam mops have the potential to damage vinyl plank floors. Steam and dripping water can seep between the planks and loosen the glue that holds them in place. The heat produced by the mop may also damage the vinyl, causing it to warp or bend. It may also dull the finish. Many flooring manufacturers will not honor the warranty on vinyl planks if they have been subjected to extreme heat, such as that produced by a steam mop. The best way to clean vinyl planking is to sweep daily and mop with warm, not hot, water using a slightly damp mop. A gentle cleaner such as vinegar added to the water may help remove stubborn spots or grime without leaving a sticky residue.

We think the timber in your space works really well - we especially like the feature tiles on you kitchen splashback which balances the timbers you have chosen.

hi all, thanks for your comments and support. We have received the ATFA inspection report which clearly outlines numerous problems with the floor which are solely caused by the poor installation. The installation does not meet the manufacturers specifications or Australian Standards. The slab was too uneven, far more than the recommended allowance, and was not properly prepared prior to the laying of the boards. We have since been back in touch with the installer. He was not happy and initially tried to act as if he was shocked, even though we highlighted problems with him even before he finished laying the boards. He also tried to make us feel guilty about taking the action that we did. Now with the report, there is no way he can deny that he is at fault. So, we are now in the process of getting quotes to have the floor pulled up, slab rectified and new boards laid by a professional wooden floor installer. We may not have to remove the whole kitchen and it may be possible to all be done by removing the kickers and panels and cutting the boards out. Even though this is not ideal, we have our fingers crossed. However, the extent of the problem will not be known until the boards come up and see what damage/problems are underneath. it has been a very stressful, inconvenient and disappointing experience. I think we have reached a point now where we know we just have to get on with it and get it done. This is not something that we have ever had to go through before and we are really feeling out way in the dark. There is certainly no joy in having to confront someone about their poor workmanship. We believe that the installer has been in touch with his insurance company, but whether they cover him for this type of thing, I am not sure. I guess that is for him to sort out. The floorboards are engineered oak and directly stuck to the subfloor. The glue he used was called wakpol or similar, but we have since been advised that a foaming glue probably would have been more suitable for this job.