What to Look for in Bamboo Flooring
So what qualities should you look for? Most bamboo flooring is made from bamboo pieces glued together in alternating layers and then milled into flooring pieces. Ideally, the bamboo should be at least four to five years of age in maturity so that it achieves a hardness rating of at least 1,400 psi on a Janka scale (harder than most oak flooring); some flooring is being made out of only 2- to 3-year-old bamboo that is not fully mature and much softer on a hardness scale. Some customers have even blogged that they can easily sink their fingernails into the flooring!
The moisture content (MC) should be 8 percent or less and consistent throughout the flooring boards. Consistency and even kiln drying is the key. There should be minimal color variation so that the installers don’t have to worry about drastic color patterning. The glues and finishes should be of high quality, contain at least one layer of a high-quality aluminum oxide for increased scratch resistance and durability, and have low to no VOCs or formaldehyde. Some flooring has only one or two layers of polyurethane, while others have five to six coats. Look for flooring that passes the strict CARB standards that California has set for indoor air quality.
Why Finish Wood?
While choosing which type of wood finish to apply to your wood furniture, floors or other woodwork projects might be a dilemma, we can all agree that applying a good finish to your wood is absolutely essential.
Without a good finish, wood is likely to deteriorate – it may dry, crack, or swell if exposed to moisture, or shrink due to other weather changes. A good wood finish not only seals the wood against the elements, but also protects against accidental damage such as stains or scratches. Wood finishes also enhance the appearance of the wood by adding color and contrast.
Types of Wood Finishes
Types of wood finishes have evolved over time with various consumer demands. The two main players in the market are penetrating oils and polyurethane finishes.
Penetrating oil finishes, typically derived from plants, do just want the name suggests – they penetrate and fortify the wood from the inside, at the same time allowing the wood to ‘breathe’. They have been around for several decades, and have a long tradition of use in Scandinavian countries.
Polyurethane finishes on the other hand, are a blend of synthetic resins that harden into a protective plastic-like coating on the surface of the wood. These were developed to meet the consumer demand for a type of wood finish that is very durable, and the mostly widely used are water-based and oil-based.
WOCA’s Premium Penetrating Oil, Diamond Oil Active
Extremely durable wood finish
Plant based
Resistant to liquids such as water, coffee, tea and red wine
Gives the wood a beautiful, breathable surface
Approved for indoor use
Low VOC
isocyanate free
Low odor
Can be used on all wood species, including Exotic.
9 popular colors available.
Engineered flooring is supposed to be more stable than solid wood. From a technical aspect, this should be true. But many engineered flooring manufacturers restrict the use of their products to a certain RH range. Warranties that specify 35 to 55 percent RH or 40 to 60 percent RH as the acceptable range. If the flooring is exposed to conditions outside these ranges, the warranties are void. So using engineered flooring may be an option for reducing winter-time floor issues, but check the manufacturer’s recommendations and warranty. Narrow boards will shrink less than wide boards for a given change in moisture content (MC). A 5-inchwide plank will shrink twice as much as a 2¼-inch-strip. So the size of the gap between 5-inch boards will be twice as big as the gap between 2¼-inch boards. More joints means more places to distribute gapping. Some species are more dimensionally stable than other species. For a given change in MC, a 5-inchwide hickory plank will shrink more than a 5-inch-wide red oak plank. The U.S. Forest Service, and others, publishes dimensional change coefficients for different species. A second solution to excessive winter gapping is to use a species of wood that is more stable (one with a smaller dimensional change coefficient). Along the same line of varying dimensional stability, quartersawn flooring shrinks about half as much as flatsawn flooring for the same amount of moisture change, so quartersawn flooring will have smaller gaps than flatsawn flooring under the same circumstances. Therefore, from a wood standpoint, to have the smallest winter gaps, use quartersawn, narrow boards from a stable species.