Old House Journal - - Restore -

A porch roof can take many forms, from a tiny gable at the en­try to a full-width con­struc­tion that wraps around the house on two or more sides. The most rec­og­niz­able type is prob­a­bly the shed roof, where the roof slopes away from the house. An­other sim­ple form is the ex­ten­sion roof, where the porch roof is merely an ex­ten­sion of the roof of the house. Still oth­ers may ac­com­mo­date roofed struc­tures within the roof mass­ing, such as gazebo bump-outs.

The pitch of a porch roof may be steep, shal­low, or nearly flat. Some, es­pe­cially those that wrap around two or more sides of the house, may have mul­ti­ple pitches. Ob­vi­ously, the amount of main­te­nance re­quired varies de­pend­ing on the com­plex­ity of the roof and how the struc­ture is ex­posed to the el­e­ments. Com­mon types in­clude:

EX­TEN­SION a porch un­der the over­hang of the house roof

SHED a roof with only one plane, at­tached to the house along a hor­i­zon­tal sill plate

DUAL-PITCHED an ex­ten­sion roof with a change of pitch, of­ten where the porch roof meets the house

FRONT GABLE a porch roof un­der a full gable, with the same ori­en­ta­tion as the house

GALLERY, DOU­BLE GALLERY a long, cor­ri­dor-like cov­ered porch, some­times stacked to open off two or more storeys

L-SHAPED a roof that forms an L on two sides of the house

POR­TICO a porch or cov­ered area sup­ported en­tirely by columns

PEDIMENT a porch roof with a tri­an­gu­lar gable end, sup­ported by columns





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