If you're not used to being on the floor, knee pads should definitely be on the shopping list! Any old knee pads is not the way to go. This is especially important with prefinished flooring installations.
Products that contains hard plastic, metal, or metal clips in their construction should be avoided. With plastic, small fragments can become embedded. Any knee pads with metal can present burrs that will definitely scratch any new floor. The same is true of picking up small pieces of grit. They may not be noticeable but they are there.
No Plastic! Fabric, Cloth Type
No plastic knee pads. Have I mentioned that yet?
Cloth type knee pads are most preferred, but they too will pick up grit. It's best to shake them out often when in doubt. Another potential problem with any type of knee pads, especially when doing direct glued downs to concrete, is smearing adhesive without knowing it. Most adhesives cure within 24 hours but some remain tacky. My suggestion? Always make a thorough inspection prior to putting them on.
Better quality knee pads will run 25.00 to $ 50.00 from a local flooring supply store, while the home center prices may run around ten to fifteen for basic protection. Crain Comfort Knees (above), a professional favorite, is the cream of the crop for fabric style products and run about $40.00