Luxury vinyl ranks slightly behind sheet vinyl and ceramic tile because the seams between planks do sometimes allow water to seep to the subfloor especially if the installation is less than.
Best flooring for high sun areas.
If you have an unheated porch area and you would like to put in a new floor you should consider using laminate carpet ceramic or resilient flooring.
The entire layer of flooring is entirely waterproof including the core making this a much better flooring for wet areas than plastic laminate flooring.
If your sunroom is in a high traffic area tile flooring is a great option due to its scratch resistant properties.
Durability beauty and ease of maintenance.
A natural fit for high traffic areas of the home porcelain tile outperformed every other flooring material we tested for resistance to scratching and resisted dents very well says joan muratore.
Vinyl if the vinyl flooring is going to be installed atop a concrete slab or over a crawl space be sure to use a vapor barrier.
Another option is to layer a cold floor with large area rugs rather than wall to wall carpet and check the underside for dampness or mold growth occasionally.
Be careful though when you are choosing a color as dark tiles can get pretty hot after a day in the sun.