I suggest you purchase a sheet of underpad and then cut it to size. Put it under the door mats and be done with it.

So long as there is a degree of separation between the rubber mat and the floor (like an underpad) you can have whatever you like.

ah that makes sense. Maybe I can find something thin. Our lifestyle is just wet. We do a lot of work that is mucky and I hate to be hung up on a door mat.

I've worked with Certified Carpet who specializes in creating customized floor mats for entryways. They're the kind you see at commercial entryways and retail location entries that see a LOT of foot traffic. They can customize them to look great in your entryway. You can ask them how well they work with your type of flooring. You can check them out at http://certifiedcarpet.com/mats/. 

I don't know why any sort of floor mat would not be applicable......there is nothing on the COREtec website that specifies any concerns other than recommending a floor mat be used in high traffic areas as it is dirt and grit that will impair the finish, not so much moisture.

Well, I've lived with a lot of vinyl floors in my lifetime and have used all sorts of floor mats on them including those with a rubberized or plastic backing. I have never experienced any staining like you described. YMMV

SJ MCcarthy - It IS frustrating. I have not put any rugs down yet as we have just finished. Our flooring is a warmer tone but I don't want a huge orange stain. As much as I researched, I somehow missed this major issue with rug backings.

gardengal48 - This is my frustration. I don't know why these limitations are not plain as day on the Coretec website. I only discovered this issue reading here, but I've yet to find much as far as what to use other than a different pad. That defeats the purpose of water hogging mats which we kind of need here. I love our climate (also in the PNW) but I'm not sure I would so much if I was nagging to have shoes removed outside, or cleaning a rug daily checking for water. I've left these rugs in place without moving for weeks at a time and the floor underneath is perfect. We do a lot of mucky work outside and the last thing I want to do is obsess about a rug. Our old floor was some sort of laminated hardwood look and I've had the rugs for years on them. I guess laminate is different.

Rugknots oriental rugs - thanks, I will check out that link. I know water hogging mats are not pretty, but they save my sanity and I'm not one to use beautiful area rugs in my foyer because I dislike being a nag and trying to keep something clean that is never going to be LOL. We have a lot of kids coming in and out and a dog.

I have new LVP flooring and have the same issue! Coretec website states to use mats without rubber or vinyl backing, which is basically every indoor mat. Have you found any great options?

@Danielle P I found this article RugPadUSA - RUG PADS FOR VINYL AND VINYL PLANK FLOORS Very informative and echos @SJ McCarthy comments.

https://www.amazon.com/RUGPADUSA-Vinyl-Non-Slip-Luxury-Flooring/dp/B09XXX1VY9/ref=sr_1_1_sspa?crid=3UAJV8JEOU9KJ&keywords=vinyl%2Block%2Brug%2Bpad%2Busa&qid=1663861719&s=home-garden&sprefix=vinyl%2Block%2Cgarden%2C88&sr=1-1-spons&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0&th=1

I just found this for my vinyl flooring!

and old fashioned Capel braided rugs are fine as well!

This thread is from 7 years ago and I am curious if any pioneers here decided to use waterhog mats on their coretec/shaw LVP despite the warnings. If so, would you be so kind as to share the results of your bravery with the rest of us waterhog fans? Thanks!