Types of Exterior Door Construction

Written by emily beach
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Types of Exterior Door Construction
(Wiki Commons)

When it comes to choosing a door for the exterior of your home, you have many factors to consider. For many people, cost, security and maintenance are some of the primary concerns. Others are seeking a certain kind of look or simply want a material that will last for many years. An endless number of door designs and materials are available, including several speciality options for both residential and commercial settings.

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Steel

Doors made from steel (often called hollow metal doors) are the most common type of door used on exterior construction. They are one of the least expensive options and are virtually maintenance free under normal use. Steel doors also offer some insulating properties and are extremely secure. While steel doors are commonly found on commercial projects, many homeowners are beginning to appreciate this material as well, especially since design selections have increased in recent years. To prevent problems with rust and corrosion, choose galvanised steel doors instead of cold or hot rolled models.

Fibreglass

Fibreglass doors are another popular option for exterior use. This material is extremely resistant to moisture and bad weather. It offers strong insulating properties and is nearly as strong and secure as a steel door. Fibreglass is also resistant to the scratches and dents that can damage other materials like wood or metal. This product is generally more expensive than steel and often is harder to find. Many fibreglass door manufacturers produce all units as custom orders, meaning that they take longer to receive and also may cost more. While old fibreglass units had an almost plastic-looking surface, newer models are made to resemble wood grain and texture. While improvements have been made, most people can tell the difference between a fibreglass and wood door without touching the material.

Wood

Wood doors are available in a virtually limitless number of colours and designs. Consumers can choose from many different veneers, with oak and mahogany among the most popular. Wood doors also offer customers the chance to choose stains or varnishes to change the look and colour of the material. While doors made from wood are generally the most expensive option, they are also the least likely to become damaged, and if they are damaged, they are easy to repair. No other material can match the weight and feel of a quality wood door. While flush models (smooth with no glass) are common in commercial settings, homeowners can choose from stile and rail (panel) doors or units with inlaid glass. The biggest problem with using wood doors on an exterior opening is exposure to moisture and harsh weather. These doors are best used where they will be protected, such as under an awning or porch roof.

Aluminium

The majority of commercial buildings use exterior entrances made from aluminium. This product is popular because of its beautiful shine and modern appeal. Aluminium entrances are also easy to customise with different types of glass and window patterns. This material is very good at withstanding the elements. It will not rust or corrode, and in fact, when exposed to the air, a chemical process takes place that actually hardens and strengthens the surface of the aluminium. This product is used on storefront systems, sliding doors and revolving entrances. While aluminium can be expensive, it is also very durable and long lasting.

Speciality Construction

The most common speciality construction is fire rating. This means that the door has a special mineral core that helps contain fire and stop it from spreading through the opening. Doors can also be rated for sound transmission. Known as STC doors, these openings have special insulated cores that keep noise from passing through. They are most common in manufacturing and industrial facilities, as well as in residential areas. For security and police buildings, bullet-resistant doors are available. These doors contain special metal and lead cores that can literally stop a bullet from penetrating. When it comes to green construction, consumers can choose from doors made from sustainable wood products, those built using rapidly renewable materials and doors that contain urea-free binding agents. Of course, some of the "greenest" and most interesting exterior doors can be found through construction salvage facilities.

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