How to Install Lagune Quick Step Flooring Starting from a corner, saw off the tongue sides of the plank and place it with the sawn off sides facing the wall. Follow diagram 3B - 3C Use expansion blocks to ensure an 8-10 mm gap from the wall. Follow diagram 3D Step 2 – Completing the floor When reaching the end of the row, measure the remaining surface, leave an expansion gap of 8-10 mm and cut the plank to size in order to fit the measured space. NOTE: In order to avoid damaging the appearance of the plank, place it with the decorated side down when cutting it to size. Follow the diagrams below to complete the rows and to correctly choose the installation method which best suits your needs.