Editing Daylighting (architecture) (section)

====Sawtooth roof====
Another roof-angled glass alternative is a [[saw-tooth roof|sawtooth roof]] (found on older factories). Sawtooth roofs have vertical roof glass facing away from the equator side of the building to capture diffused light (not harsh direct equator-side solar gain).<ref name="LG10">{{cite book |date=1999|title= CIBSE Lighting Guide 10: Daylighting and window design |publisher= CIBSE |isbn= 978-0-900953-98-9}}</ref> The angled portion of the glass-support structure is opaque and well insulated with a cool roof and [[radiant barrier]]. The sawtooth roof's lighting concept partially reduces the summer "solar furnace" skylight problem, but still allows warm interior air to rise and touch the exterior roof glass in the cold winter, with significant undesirable heat transfer.<ref>{{cite journal | first = F. | last = Asdrubali | year = 2003 | title = Lighting Research and Technology: "Daylighting performance of sawtooth roofs of industrial buildings "| journal=Lighting Research and Technology | volume = 35 | issue = 4| pages = 343–359 | doi = 10.1191/1365782803li094oa| s2cid = 109902823 }}</ref>