Your floor is not flat so the flooring is holding itself up by it s own will and when you walk on it you are pressing it down into those valleys and it s touching the concrete.
Luxury vinyl plank not sitting flat.
And i don t like it.
Vinyl plank flooring over radiant should not be a problem provided you follow the manufacturers recommendations.
That is my semi educated guess.
After all a floor can be flat and have a plane to it.
You can seal vinyl plank completely and prevents moisture from going into the floor.
My new click lock floating luxury vinyl plank floor has some dips and noises i wasn t expecting.
Level is not necessarily important.
If water seeps up under the flooring from an extremely moist concrete subfloor the adhesive can be weakened causing buckling in the floors.
Even though the first reason for the invention of vinyl planks was to mimic hardwood floors today it authentically mimics different textures colors and species.
Vinyl plank is water resistant and is not like hardwood which is not resistant to water.
Floor prep the only major rule for installing vinyl plank floors is that the surface needs to be flat.
The luxury vinyl materials are less likely to buckle than some of the less expensive economy tile floors.