flooring
This bathroom is a great example of current trends in bathroom design: plenty of space, bright light, a great soaking tub and a walk-in barrier-free shower. Notice the flush transition from hardwood flooring to tile. Looking closer (click on the photo to enlarge it), you’ll see that the tile is large (about 1 foot by 2 feet) and made of marble; both features require a stiffer floor than most homes have. Tip: If you’re working with large-format tile or natural stone, specify that your rooms meet a stronger deflection rating: L/720, instead of the base-standard L/360. This number indicates how much flex a floor has before tile is installed — both the Tile Council of North America (TCNA) and the Terrazzo, Tile and Marble Association of Canada (TTMAC) require L/720 for heavy installations.
Most of today’s floor tile is ⅜ inch to ¾ inch thick. Most hardwood flooring is ¾ inch thick. This means that when you put tile next to hardwood flooring, your tile choice will be critical for a flush transition. Simply tiling on top of a plywood subfloor is not an option — this practice is frowned upon and is not permitted by the TCNA or TTMAC. However, you can install a thin uncoupling mat (like Laticrete’s Strata Mat or Schluter Systems‘ Ditra) to meet the tile industry’s requirements. Tip: Installing a second layer of plywood over your subfloor and under your hardwood allows for more floor preparation options in the future. This is also a valid option if your home’s floor joists were not designed for a stronger, heavier floor. However, this should be planned early on, since it affects how your stairs and stair risers are built.
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