Since it has more layers, is a 7-ply door better than a 5-ply door?
There are two schools of thought on that. Some feel that more layers make a better door. Others point out that since the thickness of each ply is varied so that the total thickness of the “skin” remains the same for both the 5-ply and 7-ply door, there is no real difference in the amount of material provided. What really determines the quality of the door is the strength of framing and joining used, and the quality of the materials that make up the “skin”.
