Do I need to secure the Rosco SubFloor to my existing floor?
Although this step is not always specifically necessary (the weight of the floor will tend to keep the floor in place once it is assembled) you can attach the perimeter of the subfloor to the existing surface. If the existing floor is wood, you can simply screw the perimeters down with 2 ” wood screws. If the existing floor is masonry, the floor can be attached using masonry screws, such as tapcons. If you don’t want to (or aren’t allowed) to screw in to the existing floor, you can attach the perimeters using double stick tape. If there is a specific line that the edge of the floor needs to match (such as the front edge of a stage), you may want to screw those perimeters down, or use double stick tape if you cannot use screws, or at least use a chalk line and snap a line to follow as you lay down the perimeter.
