Nanine Flooring July 13th, 2017 - 19:51:07
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.
This shrinking action pulls the floor together, adding strength to the overall system. The advantages of this type of sub-floor are its strength and durability. One important note, homeowners are often disturbed by the small 1/4" wide gaps, generally left between the individual planks after the wood dries out. Although disturbing to see during construction, upon completion, the spaces are not noticeable, and really have no impact on the sub-floor components at all. Strip floors are designed to be interlocking, through lapping or spacing of joints.
We personally do not care for prefinished flooring due to installation problems associated with it, so our product requires site applied finish. This means that your floor finish if site applied will be easier to sand and refinish than a prefinished floor. Also you do not have to deal with that micro bevel groove between each board that tends to fill up with dust and crumbs. Most prefinished hardwood floors really can`t be refinished easily. To sand it off means that the wear layer has to be thicker than the height of the nails and have room to sand off the micro bevel between boards; that amounts to a lot of sanding. You also will not be able to spot sand or touch up parts of the floor.
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.