A - It is not unusual to see a minor separation of the coating system as the boards expand and contract during seasonal changes. The main focus of the coating is to protect and seal the wood while allowing it to contract and expand in a normal, expected pattern. On dark colored backgrounds, this effect may appear more pronounced due to the light color of the natural wood underneath. This sometimes becomes visible during winter heating months as the wood naturally shrinks in dimension. The summer expansion of the wood will make these areas less visible. As this cycle continues, the cleavage of the coating allows the wood to maintain an individual movement within the confines of the gymnasium floor system.