Nynette Flooring August 14th, 2017 - 17:10:36
One drawback is that this type of floor requires special hanger systems designed for the joists, to enable them to be hung from each other or against beams/bearing walls. Manufactured joists are becoming a popular flooring system, for they are relatively cheap, reduce labour time and provide adequate support. However, builders need to familiarize themselves with its installations, for poor installation can cause severe structural damage to the joists. A good example is a three point, center bearing joist, left with the top chord uncut, which can potentially fail or pull apart, over the center bearing point.
All joists must extend at least 1-1/2" on to a bearing assembly, of either a beam or full height wall, unless metal hangers are installed to provide proper bearing support against other structural components. Beams, which support the floor joists over greater spans, are constructed in the form of laminated joists often referred to as built up beams, or one piece solid load bearing beams, cut from logs or manufactured. Electricians and plumber may often cut or drill into the joist work to install utilities, and this is accepted, so long as they do not remove more material than what is required by codes. This type of floor system is usually the cheapest to install.
Are you going to be able to enforce the warranty? Also, do you really think that a finish can last a lifetime? For example take a nail and try scraping it across the surface. Sure it is a durable, well applied finish, but it is impossible to make a product that won`t get abused at some point in its lifetime. Do you think that the only serious trial your floor will ever see is a stinky sock? Read the fine print on the warranty and regardless of what it says consider the true replacement cost on the floor. It probably only covers the cost of material of the specific damaged product under normal wear and tear. Your product may not be made exactly the same later (trends and product lines change) to replace the section that is warrantied, so you may have to replace the whole floor years later. You will have labor cost along with displacement of trim, cabinets, and appliances. Also most of these lifetime finishes cannot be repaired or sanded because of a micro bevel put on the edge of prefinished floor. Our advice is instead to buy a quality product that can be refinished and repaired because something will go wrong in the lifetime of the floor; don`t get a false sense of security.
The manufactured joist, which is a relatively new product, is often manufactured from low cost materials in the shape of an I beam, similar to steel beams in larger buildings. What this means is that the joist is constructed with a thicker top and bottom edge, and generally interlocking aspenite vertically spanning between the two. These systems are very strong, often capable of spanning the entire width of the building.