Most houses have several different kinds of doors, either exterior or interior models. These two types are differentiated by their construction, weather-tightness, weight and related factors which determines whether they can survive exposure to the elements.

Typical weather-tight exterior doors include the front entry door, back door, French doors, glass sliders and patio doors. Lighter-weight interior doors are used in rooms.

The function of a door is determined by its construction, appearance and operation. Doors which are made for security have very solid, durable construction and highly effective hardware. Doors are also distinguished by their action. Most swing on hinges, while some slide along tracks or fold and unfold. The choice of a door and its design for both internal and external use is fundamental in deciding the redesigning some of the decor.

Many things need to be taken into consideration while choosing doors. There are many options available to you and it can be a tedious task to know where to start.

Current trends indicate that PVCU is the most popular material for making external doors and composite doors. Older properties still rely on the traditional wooden doors. Composite doors can be made more expensive by assorting them in a range of finishes and can look good anywhere.

Doors come in a set of standard sizes. Their main parameters for width are 24, 28, 30, 32, 34 or 36; for height are 78, 80 or 82, and for thickness are 13/8, 13/4 and 2. All figures are in inches. Normally, wooden doors are paneled, hollowed or glazed.

Security is a major issue for doors. For that it must be always checked that it has been built to a specific guidelines. It is also important to check and recheck the locking mechanisms on doors.

There are many types of doors available. Mezzanine doors ensure safety and efficiency for workers operating in offices. Blast-resistant doors withstand blast pressures up to 100 pounds per square foot. Roof hatches are special types of doors designed with multiple leaves and can be custom manufactured for any sized opening.