I recently had a wood floor installed in my living room/dining room. It was 3/8 inch quarter sawn hickory hand scrapped and dyed. It was installed by a professional installer. The boards were 8,6,and 4 inch in width and various lengths. We live on a lake in Northern Michigan and when the summer humidity peaked the boards cupped. The installation included a 1/8 inch underlayment and a moisture barrier. It is installed above a crawl space. Is there any solution to this problem or do we just learn to live with the cupped flooring?