Strand Woven High Density Fiberboard (HDF) 3/8 in. Bamboo Flooring is popular for its supreme durability and extreme hardness with a Janka Rating of 3,000. The prefinished flooring has a 7-layer aluminum oxide finish providing protection from every day wear. This product has achieved GREENGUARD Indoor Air Quality Certification and has been tested for more than 10,000 volatile organic compounds, including formaldehyde, to meet these standards. The glueless installation is easy and economical; above grade, on grade and below grade. It's the perfect choice for residential and light to medium commercial use. An existing home should have a consistent room temperature of 60°F - 80°F and relative humidity (RH) of 35% - 55%. Continual deviation from these conditions will affect the dimensions of flooring (see installation guide for more details).