Wood, as a natural product, can have variations beyond our control that may not produce a work of perfection but still one of lasting quality. We are working in a house, not a dust-free booth of a furniture factory. Imperfections such as an eyelash, floor brush bristles, insects, or a small bit of grit may appear in the finish and are beyond our ability to control. Also, please note that our machines are engineered to get as close as possible to existing base shoe or baseboards, and this may cause nicks or scratch marks on these boards. These are unforeseen and could entail touchups on the customer’s part. Wood may raise slightly in a small area after finishing. Wood also expands and contracts with changes in temperature and humidity. Going through a heating cycle over several seasons can cause movement of the wood and is part of the floor. We strongly recommend the use of a home humidifier added to your central heating system. It will greatly help stabilize the home’s humidity. This will help keep your floor from drying out in the winter months. Linseed oil putty can help fill minor cracks that appear and come in colors to match your floor.