Is korlok resistant to moisture? I am not familiar with the vinyl planking but seems like a great opportunity for mould and mildew under the planks. You should check with the manufacturer about the suitability of their products in wet areas.

best of luck

Dr Retro
of Dr Retro House Calls

Hi Sarah

Might be worth taking a look at the below link.

https://www.karndean.com/en-au/floors/explore-by-room/bathroom

The Drain Holes will need to have access and be siliconed.

Thanks for your help:)