Many people hear the phrase slab door and simply nod without knowing the answer to their crucial question when building a home: What is a slab door? In simplest terms, a slab door is what a door is at its most basic level: a rectangular (or two rectangles in the case of a French or double doors) "slab" of wood, wrought iron, steel, or fiberglass. A slab door does not come sold with the other key elements all entryways need to function, such as hinges, knob(s), or even the doorjamb or casing. Doors that include all of this (or most of it) are called "pre-hung doors," and are generally more appealing for those who don't want to create a unique frame, or have to measure for purposes of insulating around the door, and so on. But for those who prefer to have all the options open for their own unique design ideas for a door model, slab doors are the way to go — and nearly always cheaper for the obvious reasons.

What is a Slab Door Most Commonly Used for in Architecture?

Also referred to as a flush door, be it for interior doorways or exterior entryways, a slab or flush door is usually used by industry professionals, such as construction contractors and carpenters among others. This is because a slab door takes a greater degree of craftsmanship and overall understanding of construction to install. The person or people responsible for installing a slab door or set of flush doors will also be responsible for creating the doorframes and any trim individually for each doorway. What’s more, there’s no set hardware for slab doors, so this as well as any embellishments or designs you want for the door you’ll have to purchase yourself.

What is a Slab Door Best for in Home Design?

What is a slab door good for if it doesn’t come with a frame or any of the other odds and ends you need for installing a door? The key to understanding the appeal of slab or flush doors is that they’re generally far more affordable. The other huge highlight to a slab-type entryway is that you get to make all the design choices: the door frame, trim, hardware, or even the color, and which way the door will face and swing are all up to you when you use a slab door as opposed to its pre-hung counterpart.