Wooden doors are still the best material, one of them is a stave core. These are solid blocks of wood precisely fit together in long staves. The stave core has a 3 ply skin on each side. The grain in each ply is turned at a 90 degree angle to the others for added strength. The outer skin is a high quality veneer. It prefer to work with Birch and Oak veneers as they offer the most period-appropriate look, finish nicely, and tend to hold up well in varying temperatures and weather conditions. This sample door design are available here.

