Super Felt 360 sq. ft. 60 in. x 72 ft. x 3 mm Felt Cushion Underlayment Roll for Engineered Wood and Laminate Flooring

You will need a pair of scissors and a carpet knife. I also recommend a roll of duct tape. Make sure your subfloor is clean and dry before you put this down and don't walk on it with shoes as you can easily tear the plastic coating.

If you moisture issues this is not a product you want to use because it's felt. You would be better with some kind of foam padding.

Not if the floor is secure. We had it installed 4 years ago.

No! all you should need is a vapor barrier as you get all the padding you need with the attached pad. I do agree with Roberts on this one. I installed the underlayment under the Hampton Bay Walnut Plateau with no attached pad. It has been down 1.5 years and does not have a loosened joint in over 800 square feet of flooring. My wife and I love it with the pad.

Always check with your flooring manufacturers' installation instructions. However, this is designed to be used under all floating floor systems. I used it in my own home and I'm really happy with it.

It provides a little insulation, but it's only 1/8" thick, so if the subfloor is very cold I would get something thicker. My floor is wood and has 10" of fiberglass insulation underneath, so this product is fine on top of that.

We installed this under 3/4" solid wood plank flooring with square edge, no tongue and groove. That is not a good idea since the cushion of the underlayment allows the boards to flex slightly and the finish cracks at the seams. If your flooring is tongue and groove, that might not be a problem and this underlayment might work.

probably not if it's more than 1/16" high. Be safe and sand/grind away the imperfections.

You could but it may not give you the desired result. I recommend using the Pergo Gold insulation over a sealed concrete surface. It is a closed cell Styrofoam type barrier. Make sure to seal the concrete, the manufacturer recommended visquene however you will get better results using Custom Products "Red Guard", roll it on liberally over all concrete and allow to dry overnight. Then install the Pergo Gold and if you wish another layer of the felt on top of that. The felt is better for sound absorption than R value. Hope this helps.

Yes, I would believe so. I used it over the sub flooring and it worked very well. Great sound and cushion.