Plastic does not last a lifetime. What utter crap. Take windows. Wood, single-pane windows will easily last 100 years with maintenance. Vinyl windows will last no more than 20. Hardwood floors can be refinished 3-4x and scraped and recoated innumerable times, also frequently lasting well over 100 years. LVP? 20 is a HUGE stretch. Try 5, 10 if you're lucky. People use plastic because they have been sold on the fact that it is "durable" and "low maintenance" and "cheaper," which may be true if you're speaking in terms of 5 or 10 years. But the costs - actual and environmental - are much higher when you acknowledge that its life cycle is much shorter than natural wood products that can last 3-10x longer. Then add in the fact that manufacturing new plastic on that shorter cycle is terrible for the environment, too, and the real costs become obvious. The idea that LVP is used in "high end" homes is an odd one. Where I live, it's only used in the basement of high-end houses, where hardwood obviously isn't suitable. It would be a huge red flag to see LVP anywhere on the main floors of a house, even under $1m.

@jyeh3112 - Please clarify: Who was it that you "paid"? You state that the "subs" told you the concrete was not level (which is COMPLETELY normal - concrete slab is NEVER level to the point of 'finishing'). You then stated that you agreed to pay "them" extra. Did you pay the GC for the extra work or did you pay the SUBS directly for the extra work? Your answer is very, very, very important. Technically you ONLY pay your GC and they make payment to the subs. Only ONE person actually works for you - the General Contractor. Everyone else works for the General Contract....that's how it works. That's why the GC is "responsible" for everything done on the job site. Please, please, please tell me you ONLY paid the GC?! In the END, the contractor needs to be BROUGHT IN to view all the flooring. Your contract - ahem...your CONTRACT - states certain payments are offered after certain mile stones. A hardwood floor that is floated over improperly prepared subfloor (regardless of who paid) is considered "improperly installed" (funny how that works). The installation - being "improperly installed" - means the job isn't finished. The GC must correct it - or at least offer you the 25-30 year WARRANTY that his/her workers just VOIDED. Yes - an improperly installed floor VOIDS the manufacturer's warranty. Review your contract while you wait for your GC to show up on site. And use blue tape to indicate the areas with issues. And document (by numbering) the areas where the floor level fails the very basic 1/8" over 10ft (which is pretty much industry standard). And if you can MEASURE a 7/32" over 6 foot radius over top of a FINISHED floor, that means the subfloor is WELL beyond this measurement. MUCH MUCH WORSE. I'm wondering if the subs did anything with that "extra payment" (I can't tell you how many times a sub will say "Yah. I did it. Pay me." when in fact they were else were for hours and hours and hours). As for the stairs, you will have to find your documentation that states HOW they will be finished and with WHAT. I fear you have a few more issues with quality control than you may think. In essence a GC is your quality control. If they don't "control" their subs, then they aren't controlling the work site. Good luck. If you need to go for the big guns, go ahead and hire an NWFA Certfied Flooring Inspector. They aren't cheap, but they are recognised by the courts as "expert witnesses" without having to prove their qualifications. www.nwfa.org Look under "find a professional" and then go from there.

why would it fail? tony, are you purposely being obtuse or are you just ignorant? Numerous people have written multiple comments about why it would fail throughout this entire post. You making that comment either means you didn't read any of them, don't understand (in which case you should have asked for clarification) or you're just mentally retarded. sorry to be blunt, but your ridiculous mono-sentences and redundant questions have taken me to my tolerance limit. you're a grown adult and yet it's like dealing w/a petulant pre-teen the way you comment. yes, the tile layout looks wonderful (even though I can't see the entire thing, nor can I see how they went around the railing fasteners). enjoy it while you can.

Regarding your question about laying something over the marble, in our last home the previous owners laid ceramic over ceramic and we lived there for over 25 years - no cracks. It will be a pain though for anyone down the road who is updating, but you could ask a pro to be sure (will need a transition piece at doorways). The area where closet was will have to be filled in and very level. If it were me, I’d bite the bullet and remove the marble and try to match up to your wood floor or use a more casual, rustic feel. You may look back and wish you had, especially if the marble looks patched.