Slab doors are door panels that come detached from a door frame. They can function as both interior doors and exterior entry doors. Some come with pre-drilled mortises for hardware like door hinges, door latches, and faceplates. Others come as solid wood slabs and the installer must chisel out their own mortises.
Slab doors can be built from a variety of materials.
Solid wood doors. Solid wood slab doors offer a classic look for both interior and exterior applications. Solid wood doors offer insulation from the weather and noise, though some more modern options are better at blocking the outside. Solid wood is the most common option historically, and most vintage doors are solid.
Hollow core doors. These are a lightweight and low-cost option for interior doors, particularly for closet doors. They will not do much in the way of insulating temperature or absorbing the sound, but if that is not a consideration, hollow core doors can be a great budget option.
Solid core doors. Solid core slab doors are made from composite wood or other materials, which include MDF, particle board, plywood, glass fibers, and even foam. They can come finished with a solid wood veneer that makes them look quite similar to a solid wood door. When it comes to temperature insulation and sound absorption, solid core slab doors excel. Their dense, multi-layer construction traps heat and sound better than solid wood or hollow core options.
Metal doors. Metal doors are typically made of an aluminum/steel composite. Although they are heavy and a bit impersonal, they make excellent exterior doors and work especially well as security doors.
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