Orlene Flooring July 29th, 2017 - 18:10:09
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.
In the case of long span truss work, bearing lengths of at least 3" are quite common. Trusses span greater distances than framed floor assemblies and can be designed to span the entire building, eliminating center load bearing supports. They are moderately more expensive than framed floor assemblies, but provide a remarkably strong floor with little deflection or "bounce" to it. Another advantage to this type of structural system, is that utility installations can be run between the webwork components. Never allow trades to cut or drill into the members of a truss, for they are manufactured precisely for the loading conditions they will undergo during the life of the building.
If your price-point is not even in the same zip code, maybe it is in a different state, start shopping other options. For example if you are in the $1-2/sf range look at the deep discounters or laminate options. The FSC certified 12mm exterior birch plywood that we use to manufacturer the engineered flooring costs us that much alone, not counting all the other labor and materials.