During the installation of a new walk-in cooler or freezer, it is imperative the box remain square and level during the assembly of its panels. If the corners are not kept square and the floor not level, the panels will not fit together, leading to major issues as the box is being built. Even small inaccuracies will grow as the panels are assembled. These inaccuracies may not seem to be an issue as the panels are fit together, but they will lead to other panels not fitting properly and present major issues for completing the construction of the box.
First, always start with a level surface. If the floor is not level, two recommended techniques to level the floor are using self-leveling epoxy and/or asphalt shingles. It may be tempting to rush this part of the project in order to begin building the box, but it is important to get this right first before proceeding. It’s like building a wall — the base is the most important part of the project. Get it right and the wall goes up smoothly. Get it wrong and the wall is a mess.