Stained Engineered Bamboo Natural Cork's stained engineered bamboo hardwood floors are 9/16" thick x 6" wide x 75" long. Available in 5 stunning colors, these floors have micro beveled edges & ends, 6 coats of aluminum oxide finish and include a 25-Year Limited Residential Warranty. These engineered bamboo floors nailed, stapled, glued or floated over subfloors that are on, above and below grade.