Hi Ruth,
Thank you for your question. It certainly depends on the thickness and the size of the separation would these be a solution? A1120, https://kofflersales.com/p/flexible-wood-grain-t-moldings.asp?cid=2584 OR A518, https://kofflersales.com/p/wheeled-traffic-transitions.asp?cid=2584
Thank you,
The Koffler Team