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ggpk Tile Floors July 09th, 2018 - 18:07:11
In residential settings. the most common substrates [surfaces to be tiled] for flooring are wood and cement. In this article we`ll deal with deal with wood subfloors. In new construction. it`s often possible to see the structure of the subfloor and joists and usually communicate with the carpenters who built them or the contractor in charge of the project if there are any questions. In remodeling. however. sometimes one can only guess who installed the floor and how strong it is. Maybe it`s as strong as a battleship. or maybe it`s about to fall through to the basement. If a property owner is trying to install the floor himself. he or she may wonder how to know if the subfloor is strong enough. Let`s start with the technical and then translate it to the everyday way to tell.
How thick is the subfloor and what is it made of? In new construction. ¾ inch plywood or Oriented Strand Board is a standard subfloor over joists that are 16 inches on center apart. We find that is almost never enough to meet the deflection standards in most homes. Other times there is old plank flooring beneath a layer of plywood. This is a wild card. since the engineering tables usually don`t include the value for planks in their calculation. but common sense says it does add some stiffness.
What condition does the wood appear to be in? Even if the amount of wood support seems adequate according to the tables. if it appears to have been water damaged. if sections of it look moldy or corroded due to rot or decay. it`s not doing its job. Options include replacing or reinforcing it. but not just ignoring it. Also. has it been cut into in various spots. such as a plumber cutting sections of the joists for positioning pipes? All of these problems can make the wood less effective.
How tough is the tile to be installed? Fairly thick quarry tiles. for example. may be rated for heavy duty industrial applications. although they are often installed in homes. Because they are thicker than normal tiles and able to withstand heavy traffic. they may be less prone to cracking than a sensitive. thinner tile. For that matter. natural stone such as marble and granite are on the other end of the spectrum - they crack even easier than ceramic tile and should not be used in settings where any excess deflection is possible. Intuition may tell you they are stronger than ceramic. but in fact they are more brittle and prone to cracking. They need twice as rigid a floor as ceramic.