Prepare the surface by removing all baseboard trim and emptying the entire room of furniture and other objects. Remove carpet if it has a thick pile. You can install Lamisol over low-pile carpet, vinyl flooring and hard surfaces.
Leave the floorboards in the room for 48 hours before you install them to allow them to adjust to the indoor temperatures. The temperature needs to be at least 65 degrees Fahrenheit during installation.
Unroll underlayment across the floor so it covers the entire surface area. Use a utility knife to cut the underlay to fit.
Lay the first floorboard down in the far, left corner of the room so it is 8mm (5/16 inch) from the wall's edge and the grooved side faces into the room. Use spacers between the wall and laminate to ensure it is 8mm from the wall.
Connect the next floorboard by angling it down into the first board's groove until it clicks, and laying it flat on the floor next to it.
Tap the boards tightly together using a wood block and hammer.
Continue laying the laminate boards across the room in the same manner until you reach the opposite wall. Install the last full board, then measure the remaining space to determine how to cut the last board. Remember that you need an 8mm gap between the last board and wall when measuring. Mark the measurement on the board using tape.
Cut the board to fit using a fine-tooth saw. Make the cut with the good side facing up and a pad under the laminate to protect it.
Start the next row with half a board. Use the remaining piece of board from the previous cut, if it is large enough, or cut a new board in half. This staggers the end joints. Click the end joints into position by angling them into the groove and laying them flat on the floor.
Remove the spacers from around the edges.
Install your baseboard molding to finish the job. Use construction adhesive or finishing nails to attach the molding.