In most places, doors usually need to be framed due to temperature and humidity changes.
Other historical records of doors include the temple doors of King Solomon. These were made of olive wood, as were many doors in the past. An ancient stone door was found in India. These had pins at each end which then fit into sockets. These doors opened and closed much like saloon doors in the old west, but not as fast.
The Greeks and Romans used many styles of doors; single, double, sliding, or folding. This door, like many others found in Europe’s past, was made of bronze. According to historical records, it appeared to be door material.
Doors today can be made from almost any material found on Earth; wood, metal, plastic, glass, paper, and even textiles. They are usually used to keep something inside or outside. Internal and external doors are available; animal and human doors, automatic and manual doors, plus real and fake doors.
Interior and Exterior – Domestic doors are usually divided into interior and exterior groups. Internal doors are doors inside the house, while external doors are exposed to the outside elements on at least one side. Interior doors are located in the bathroom, bedroom, basement (if not an exterior entrance), and closet. External doors are generally front and back doors, there may be doors for entering the garage from the outside as well.
Animals and Humans – Both humans and animals use doors, but animal doors are usually much simpler than human doors. Doors for people usually have knobs or handles to open. Pet doors are generally in the form of a flap, such as a dog or a cat door. These are carved into larger doors for people or sometimes into the wall of a house or building.
Automatic and manual – Manual doors are usually found in houses. These are the ones that need a lever lifted or a knob turned and then pulled or pushed by hand to open. Automatic doors are a feature that has only been around since 1954 but were not first installed until 1960. These were doors for buildings and a mat on the ground that activated the opening. Today, most automatic doors have sensors that trigger the opening. Electric garage door openers were first sold in 1926, and today also have sensors. Some revolving doors today are even automatic, instead of the traditional manual style.
True and False – Doors are usually visible, but sometimes there are doors that lead nowhere and won’t even open. These doors are known as “false” doors. The Egyptians put them in tombs so that the family would have a place to place their offerings. There are even doors made not to look like doors. They are real, but they are called “secret” or “hidden” doors. A secret door can look like a bookcase in the wall or part of the wall itself.
Whether it’s a pet door, hidden door, or revolving door, these portals will always be a must. Unless people choose to leave gaping holes in their homes, doors aren’t something that’s likely to disappear with the changing times.