I needed rug pads to use for area rugs on top of carpet and though this helps a bit my area rug still bunches somewhat. It wasn't what I had hoped and was very hard to cut.
This non-slip pad was an add-on to an area rug purchase. Because the room has laminate beneath the rug, I knew we'd need something to keep the rug from sliding. This has worked great. It's also easy to cut down to size as needed with a grid system that can be cut with scissors. It was slightly bigger than the rug, so required some sizing, but I prefer that to too small. The rug has not slipped, so the pad is working as designed. It is also of a durable enough material that I expect it to wear well. After three weeks, I have no complaints and would purchase this product again. While it might not be necessary for a carpet placed on top of another carpet, it will be a helpful addition for area rugs that will be placed on top of tile, laminate, or wood floors.
I used this pad on top of wall-to-wall carpeting and then put an area rug on top of the pad. Within 2 days of walking on the area rug all the creases came out of the rug and it now lays nice and flat on top of the pad and the rug stays put it does not slide around at all.
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