Find The Best Hardwood Floor For Your Space! Luxurious, Sustainable, Affordable, Stylish Wood Floors - The Brand Recommended By Flooring Pros Nationwide. Aug 29, 2016 · The medium through which sound travels, be it brick, steel, wood or simply air, has a great effect on the sound’s behavior. Additionally, sound waves can bounce off surfaces and squeeze though small openings, allowing them to travel great distances in some cases. The two most useful descriptions of sound are the sound’s intensity and frequency. Basic labor to refinish hardwood floor with favorable site conditions. Prep up to 1 hr per 100 SF - remove debris, spot fill and patch level up to 2 defects per 100 SF. Remove finish layer by 2 pass machine sanding. Apply 2 coats polyurethane finish. Installing engineered hardwood over existing flooring is a great option for people who have hard to remove floors such as glued down hardwood or glued down vinyl. When installing a floor over your existing floor you will want to choose an engineered wood floor that is at least 1/2″ thick and over 4 3/4″ wide.