I purchased this item based on the positive reviews and am so happy with how it turned out. The decision was to simply cover the entire floor with new subflooring, installed in appropriate thicknesses so the adjacent areas (where self stick vinyl tile was to be installed ) would have a matching finished height. The wall at the end of the hallway that would eventually be the end of the new flooring was ignored; whatever happens there will happen. If the floor is over an unheated crawl space or concrete a vapor barrier should be used whether the flooring has the underlayment built in or not.
By doing this it was possible to fit the flooring around the post with a little effort and although the hole is considerably larger than the post it will be covered with quarter-round trim. Engineered hardwood flooring planks are manufactured with a tongue and groove on each side; they are designed to clip together by inserting a tongue into a groove with the planks at an angle to each other and then bending the second piece flat to the floor. The flooring will move about very easily and it can be difficult to keep it still while more is added.
The flooring we purchased was packaged and shipped as pairs of planks fastened together with that tongue and groove and stacked in a box; a little twisting and a light blow on the joint easily separated them but they had shipped hundreds or thousands of miles in that configuration. The purpose of these nails is to hold the flooring in place while additional pieces are added and thus only a couple of nails per plank is needed.
With that decision made, put down any underlayment, following the directions that came with it. Make sure the proper side is up. All engineered flooring needs an underlayment, although some have a rubber backing already built into it and an additional layer is not needed – the flooring used for this job was of the type with a rubber backing. The right place, planks fitted completely together, the proper spacing to the wall; everything.
In our case, the planks were installed from left to right; a call was made how long to make the first plank in the row and a measurement taken from the right side of the plank for cutting. With the first row down, it is a good idea to drill small holes in the flooring next to the wall and drive finishing nails through the flooring and into the subflooring.