Orlene Flooring July 15th, 2017 - 19:36:17
There are three main types of sub-flooring installed to cover and span the floor structure. It is over this that the finished floor will be placed. The sub-flooring types include raw sheathing, interlocking and strip. It is utilized not only to provide a surface for the interior finishes to be placed on, but also to prevent twisting or torque forces placed on the building. The sub-floor also allows load sharing within the joist framing system. Often the sub-flooring is glued to the joist work to eliminate creaking floors and to prevent the floor joists from turning.
Most commonly installed are interlocking sheathing panels. This type of sheathing is generally 5/8" thick, and manufactured as either plywood or aspenite (commonly referred to as "chipboard") in 4` x 8` sheets. The sheets come with the long edges designed to interlock with a tongue on one edge, and a grove on the opposing edge. They are installed by simply pushing or pounding the sheets together, and nailing or screwing them to the joist work, in the same manner as raw sheathing. It is often the cheapest to install.
I encourage you being cautious about potential discoloring of the wood floor in direct proportion to the shape of the center rug piece over time. Discoloration will occur not as a result of the throw rug or center rug piece but as a result of sunlight beaming on the wooden floor in areas around the center rug piece. You see, underneath the center rug piece sunlight cannot get to the wood. So, the color of your wooden floor beneath the center rug piece would be lighter in color over time than the exposed areas. I recommend you use throw/scatter rugs instead of center piece or area rugs as these would be more readily removed, freshened or relocated to minimize a lengthy tenure in one location.
Of all, the most commonly installed flooring system are framed floors. They consist of dimensioned lumber, bearing on exterior and interior load bearing walls or beams called "floor joists". Generally the floor joists are installed, spaced 16" apart. Installing rim and trimmer joists, to which the floor joists are nailed, finishes the perimeter. Bracing, usually in the form of bridging, but often installed as strapping, prevents the joists from turning in place. One other method used to prevent this type of turning is to glue the sub-flooring to the joists, as the sub-floor is placed.