Vinyl Flooring Over Carpet Pad. Since there is no rubber in this rug pad it does not prevent slipping. Now you may think that added cushion equals a softer floor.
In fact the difficulty of placing tack strips may be the single factor that prevents you from laying new carpet over the old carpet. Installing vinyl plank flooring over carpet padding - YouTube. Installing laminate flooring over carpet is not recommended in most installation situations.
The best choice for a rug pad under a rug on a vinyl and linoleum floor is a recycled felt rug pad or natural rubber rug pad.
Since there is no rubber in this rug pad it does not prevent slipping. You should lay down the pad over the vinyl and not over the carpet runners. Since carpet is usually plush and soft your laminate flooring would not have the support it needs to keep the locking system sturdy. We have had customers place vinyl rolls over their carpets before installing rubber tiles.