Preparation Please store Topflor horizontally in the unopened package for at least 24 hours (or better yet, 48 hours at room temperature) before laying it. This allows the panels to adjust to the room temperature. Before laying them, please check the Topflor panels again for damage. Also, check that the dimensions are correct and they match the decor. Complaints cannot be accepted once the panels have been laid. Next - Tools / Accessories