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Related to roof purlin: rafter roof


also pur·line  (pûr′lĭn)
One of several horizontal timbers supporting the rafters of a roof.

[Middle English.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈpɜːlɪn) or


(Building) a horizontal beam that provides intermediate support for the common rafters of a roof construction
[C15: of uncertain origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɜr lɪn)

also pur•line


a longitudinal member in a roof frame, usu. for supporting rafters or the like between the plate and the ridge.
[1400–50; late Middle English purlyn, purloyne]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
Mrs Hood says: "It's a continuous very long rope that loops up to the roof purlin and back and is very unusual.
We divided the construction into the following parts: 1 front henhouse wall with entrance for birds, 1 rear henhouse wall with doors, 2 side henhouse walls, 6 run wall sections, 1 run wall with screen door, 2 nest boxes, 4 popup windows, 2 henhouse rear doors, 1 drop-down rear door, 3 roof gables, 10 roof trusses, and 36 roof purlins. The coop structure seemed like a big undertaking, but breaking the job up into segments made the work much simpler.
Bedroom two also has a window enjoying panoramic views and exposed roof purlins.
Welders from the Forward Support Company, 52d Engineer Battalion, welders from the Cambodian contingent, and a handful of vertical engineers worked around the clock for 9 days to fabricate, join, and place the 31 trusses, roof purlins, and fascia.
Roof purlins were also installed on both sides, as was a ridge piece.
The other is a floor above with attractive, exposed roof purlins, access to the attic storage and another shower room en suite.
The ducts were quick and easy to install and supported on rails from the roof purlins. While the ducts distribute conditioned air to the space, they do no require installing as no condensation occurs on the surface of the Air Mixing sock, as it would on a galvanised duct.
Roof purlins were placed on these members, so avoiding straight lines.
A light and spacious living area has vaulted ceiling with exposed roof purlins and two large windows giving good natural daylight and framing the views.