To make the house as eco-friendly as possible, we used recycled and salvaged pieces when we could. For the flooring in the entry and living areas, Krissy got her hands on some old maple from a circa-1865 linen mill in North Carolina. It was only $3.60 per square foot. Even at that price, I almost sent it back. It looked terrible, with cracks, splits, metal embedded in many boards, and lots of holes. After installing the better boards, I spent two days filling something like 2,000 original nail holes with epoxy. But once it was sanded and finished it was stunning.