What are the proper fasteners for securing 1/4" wood underlayment?

How close should the nails or staples be from the edges of the underlayment panels?

How far should the underlayment joints be off set from the subfloor joints?

Should the fasteners for underlayment extend down into the floor joists?

Should the underlayment joints be butted tight, lightly or spaced?

What are the patching techniques use for underlayment joints?

How important is acclimation to underlayment panels?

What is the main cause of squeaks in a wood floor system?

What causes tunneling of a sheet vinyl directly over an underlayment joint?

What causes nail-heads to show through the surface the sheet vinyl?