While the composition of tiles may differ, the most important attribute to a tile is its wear rating. The wear rating is a tile’s ability to resist scratching from surface abrasion. The chart below shows how tiles are rated. Keep in mind all 3 types of tiles described above come with various ratings, but through-bodied porcelains usually carry the highest rating of 5 – all residential and commercial use.
For information on Dynamic Coefficient of Friction (DCOF) and DCOF AcuTest protocol, please refer to the Tile Council of North America’s (TCNA) technical bulletin.
Types of Wood
Comparing American Hardwoods, Softwoods and Tropical Hardwoods
Wood products are known for their natural beauty, but when selecting a type of wood for your next cabinetry, flooring, furniture or millwork project, it is important to also consider the level of durability by understanding the difference between wood types. Each type and species of wood has an individual cellular structure that creates unique physical properties that determine suitability for different uses.
For example, the hardness of woods varies widely, so certain hardwood species are not recommended for flooring because they are not hard enough to withstand heavy wear and tear.
The following offers a brief comparison of American hardwoods, softwoods and often misused tropical hardwoods and their appropriate applications:
- Hardwoods are deciduous trees that have broad leaves, produce a fruit or nut and generally go dormant in the winter. North America’s forests grow hundreds of varieties that thrive in temperate climates, including oak, ash, cherry, maple and poplar species. Each species can be crafted into durable, long-lasting furniture, cabinetry, flooring and millwork, and each offers unique markings with variation in grain pattern, texture and color.
- Softwoods or conifers, from the Latin word meaning “cone-bearing,” have needles rather than leaves. Widely available U.S. softwood trees include cedar, fir, hemlock, pine, redwood and spruce. In a home, softwoods primarily are used as structural lumber such as 2x4s and 2x6s, with limited decorative applications.
- Tropical Hardwoods, including mahogany, rosewood, teak and wenge – are not native to North America. They grow in the tropical forests of the world and must be imported for domestic use. While some tropical hardwoods can be used for interior applications, including flooring, the color, grain pattern, hardness and luster of many imported woods differ from those of America.
Janka Rating System
When in doubt about the type of wood to select for your cabinetry, flooring, furniture or millwork project, refer to the Janka Rating System, which measures the relative hardness of woods. The hardest commercially available hardwood is hickory, and it is five times harder than aspen, one of the “soft” hardwoods. And while this example lists just some of the most popular hardwood species, there are hundreds of varieties, representing the North American hardwood population. Because hardness is an important factor, and hardness varies for each species, the Janka Scale of Hardness is an excellent tool to help identify appropriate choices.
Janka Rating System
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