We have a brand new wood floor and are looking to install the ?" Soft Wood Tiles on the wood floor to create a workout area in one of our spare bedrooms. Do you recommend an underlayment on top to protect the wood floor?

You would not need to place an underlayment or plastic sheet under our 5/8" Soft Wood Tiles to protect the wood flooring below. You can if you were deeply concerned that it could ruin your wood flooring, but it is not necessary. Now if you were dropping any heavy-weights, we would recommend placing a rubber mat over the foam tiles to protect your subfloor and the foam tiles properly.