This story covers installing glued-edge, or floating engineered flooring.
Roll out the foam underlayment in the same direction that you plan to install the flooring. Extend the underlayment a few inches up the wall and trim the excess before installing moldings. Tape the seams with the tape provided. Or overlap the precut seams and adhere with the double-sided tape provided.
Measure a distance equal to the width of two planks (include the tongue in the measurement) from two places on the installation wall plus the expansion gap recommended by the manufacturer. Snap a chalkline. Temporarily secure a straight board to the floor and align it between the chalkline and the wall. Use this board as a guide for laying the flooring.
Apply a bead of recommended glue to the tongue on the end of the plank. Position the plank against the guide board with the groove facing the guide board. Snug the end of the next plank over the glued tongue on the end of the first board. Secure the two lengths with a tapping block.
For the second row start with the leftover length from the last board in the first row. Or cut another board to length so the joint is staggered. Apply a thin bead of glue to the tongue of the plank in the first row. Snug the groove of the second row onto the glued tongue, using the tapping block.
Pull up the guide board to lay the last rows. Rip-cut the planks to fit, scribing where necessary for an accurate fit. Stay off the floating floor for the time recommended by the manufacturer. Finish the floor by covering perimeter gaps with baseboard and quarter-round moldings.