Know the Material Used in your Hardwood Floor Rug Pad
One of the most important things to know about a rug pad for hardwood floor is that the material must be safe for hardwood floors. When you know the material in the rug pad and when that material is either a recycled felt or a natural rubber, then chances are you are safe with the right rug pad for your hardwood floor.
Try to stay away from polyester, pvc or nylon rug pads for hardwood floors. Most of these types of rug pads contain some sort of sprayed on adhesive to give them a non slip function, yet this spray is what could stick to and damage your hardwood floor.