This new house under construction in the Brisbane suburb of Sherwood had new secret nailed Blackbutt flooring and Blackbutt stairs laid throughout the entire house. Blackbutt flooring is a blonde colored hardwood and a popular choice as it has a lighter tone of color. However, when the blonde colored hardwood is finished with a polyurethane timber floor finish, the lighter pale tone of the timber is gradually lost to a yellow/orange color as the polyurethane yellows with age. This is a result of UV light affecting the polyurethane timber floor finish.