Editing Door (section)

=== Main materials ===
New exterior doors are largely defined by the type of materials they are made from: [[wood]], [[steel]], [[fiberglass]], [[UPVC]]/vinyl, [[aluminum]], composite, [[Glass|glass (patio doors)]], etc.

[[File:Quinta da Boa Vista 13.jpg|thumb|upright|A neoclassical wooden iron door in the [[Paço de São Cristóvão|Palace of São Cristóvão]], the former main residence of the [[Brazilian imperial family]] with gilded [[imperial cypher]]s of Emperor [[Pedro II of Brazil]]]]
'''Wooden doors''' – including solid wood doors – are a top choice for many homeowners, largely because of the aesthetic qualities of wood. Many wood doors are custom-made, but they have several downsides: their price, their maintenance requirements (regular painting and staining) and their limited insulating value<ref>Exterior Doors; Energy.gov; {{cite web |url=http://energy.gov/energysaver/articles/doors |title=Doors |access-date=2015-03-05 |url-status=live |archive-url=https://web.archive.org/web/20150304181502/http://energy.gov/energysaver/articles/doors |archive-date=2015-03-04 }}</ref> (R-5 to R-6, not including the effects of the glass elements of the doors). Wood doors often have an overhang requirement to maintain a warranty. An overhang is a roof, porch area or awning that helps to protect the door and its finish from [[Ultraviolet|UV]] rays.

'''Steel doors''' are another major type of residential front doors; most of them come with a [[polyurethane]] or other type of [[foam]] insulation core – a critical factor in a building's overall comfort and efficiency. Steel doors mostly in default comes along with frame and lock system, which is a high cost efficiency factor compared to wooden doors.

Most modern exterior walls provide [[thermal insulation]] and [[energy conservation|energy efficiency]], which can be indicated by the [[Energy Star]] label or the [[passive house]] standards. Premium '''composite''' (including steel doors with a thick core of polyurethane or other foam), '''fiberglass''' and '''vinyl doors''' benefit from the materials they are made from, from a thermal perspective.