Having experienced a leaking shower, a step down sounds like a welcome added precaution, which seems rarely done. Supposedly if there is no hob or atepdown there is an angle, and obviously the whole thing is supposed to slope towards the drain anyway, but BeachBathrooms' earlier comment about capillary action rings true. It became obvious very quickly in our other shower that water was creeping across the grout outside the shower so whatever was meant to be done either wasn't or wasn't correctly done. Then there's the modern hotel bathrooms I've experienced where the water simply splashes out too easily. All in the name of style.

I would suggest Luxury Vinyl Tiles, especially for a kitchen where the floor could get wet.

i'm guessing that a problem could be that the boards will shrink and create drafty gaps so i think my old builder dad would have laid the boards upside down, without nails to settle to the temperature and moisture in the room while he did other jobs for a week or two and then turned over the boards and, using a solid timber length to push the boards tight as possible before nailing and he would have probably appreciated the idea of adding some under floor insulation as well

Every month seems to bring new flooring products to market that claim to be water resistant or waterproof. But how do you know which products are suitable for wet areas in your home? And what rooms are considered wet areas? Selecting the Best Flooring for Kitchens, Laundries & Wet Areas Which types of flooring are suitable for use in wet areas? So long as your floors are properly waterproofed in accordance with the NCC, Flooring 2 You’s range of Hybrid flooring is suitable for installation in bathrooms, laundries and toilets in domestic homes without floor wastes (Not to be installed within the shower or near a drain). Our hybrid flooring is completely unaffected by moisture, and 100% stable when exposed to topical moisture on a regular basis. Hybrid planks are composed by creating layers that are resistant to water and scratch-proof that are made to last: The top layer is treated to make them stain and scratch proof. A decorative layer gives it the look of timber. The rigid core is innovative that provides stability, especially against changes in temperature and water, including heating that’s underfloor and windows that are north-facing. The last layer is the acoustic backing that helps with noise reduction. When it comes to other areas of the home, other products are also suitable provided the proper maintenance precautions are taken. For more product specifications, care and maintenance information, please refer to the respective product pages. https://flooring2you.com.au/selecting-the-best-flooring-for-kitchens-laundries-wet-areas/