What is a gambrel roof?
A gambrel roof has two slopes on each side of a central ridge: a steep lower slope and a shallower upper slope. Its broken profile creates room in the upper level and appears on barns and Dutch Colonial Revival houses.
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Why use a gambrel roof?
Pennsylvania’s agricultural history guide explains the purpose in a barn: the broken roof profile expands the upper level for hay storage. The benefit described here is usable loft volume. “A gambrel roof has a central ridge at the top, and the upper-level area is expanded by two additional ridges, one on either side of the central ridge.” Source: Pennsylvania Historical and Museum Commission, read 2026-10-31. “This gives more room for hay than a traditional gable roof.” Source: Pennsylvania Historical and Museum Commission, read 2026-10-31.
How does Monticello define a gambrel roof?
Monticello’s architectural glossary defines the gambrel roof by a change in pitch: the lower slope is steeper and the upper slope is shallower on each side of the ridge. “A roof that has two slopes on opposite sides of the ridge where the upper slope is of a lesser pitch than the lower slope.” Source: City of Monticello, read 2026-10-31.
What is the history of the gambrel roof?
The Spokane Historic Preservation Office dates the English gambrel roof style to the second half of the nineteenth century. This is a regional account of one form, rather than a date for every gambrel roof. “The English Gambrel roof style appeared in the second half of the nineteenth century and became popular after the Civil War.” Source: Spokane Historic Preservation Office, read 2026-10-31.
What house style has a gambrel roof?
Cincinnati’s architectural guide identifies the gambrel roof as a feature of Dutch Colonial Revival houses. The roof shape identifies a style feature; it does not specify the roof covering material. “Dutch Colonial Revivals are easily identified by gambrel roofs (a roof with two slopes of different pitches on either side of the ridge).” Source: City of Cincinnati, read 2026-10-31. “Houses of this type are sided in brick, clapboard, or wood shingles.” Source: City of Cincinnati, read 2026-10-31.
Can a house have a gambrel roof with dormers?
Yes. Andover’s architectural guide illustrates a house with a gambrel roof and three dormers. Dormers are additional roof features; their number is not part of the definition of a gambrel roof. “This side-gabled house has a gambrel roof with three dormers.” Source: Andover Historic Preservation, read 2026-10-31.
Sources
- Glossary of Architectural Terms — City of Monticello; read 2026-10-31.
- Pennsylvania Agricultural History Project: Gambrel Roof — Pennsylvania Historical and Museum Commission; read 2026-10-31.
- Colonial Revival: 1895 To 1930 — City of Cincinnati; read 2026-10-31.
- English Gambrel — Spokane Historic Preservation Office; read 2026-10-31.
- Andover’s Architectural Styles — Andover Historic Preservation; read 2026-10-31.