Hollow core doors are the lightest, least expensive and easiest to install interior door option, but they do have drawbacks. They get their name from the fact that the interior core of the door is free of wood and has either a foam core or cardboard in a honeycomb pattern to give the outer skin some rigidity. Hollow core doors block sound less effectively and they have a substantially lower fire resistance compared with the more premium option of solid core interior doors.
Solid core doors have a solid wood fiber core for weight and solidity, with wood veneer or a hardboard outer skin for good looks. Solid core doors offer greater security, they block noise much more effectively than hollow core doors and have a substantially higher fire rating. As you explain all this to your clients, remind them that doors are something we interact with daily, so the tactile quality of weight and that positive closing “thunk” really matters. These are the kinds of benefits that only a solid core door can deliver, even if only used on bedrooms and bathrooms. If the budget on a project is tight, let high traffic interior doors be the last thing to get economized. Why? Today’s lifestyles mean more people are spending time in their homes, and with more and more people working from home, the need for privacy, peace and quiet in some areas of the house become vital.