“A perfectly flat roof permits up to 50 percent more heat gain that a pitched roof… This illustrates the failure of the flat-roof construction to get natural, hot air flow out from under the eaves.”
The Owner Built Home: A How-to-do-it Book (1972)
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Ken Kern 48
American writerRelated quotes

“Look for happiness under your own roof.”
Source: The Happiness Project: Or Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun

“Frisbeetarianism is the belief that when you die,
your soul goes up on the roof and gets stuck.”

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book II, Chapter I, Sec. 3

“I define UNIX as 30 definitions of regular expressions living under one roof.”
Digital Typography, ch. 33, p. 649 (1999)

“A thatched roof once covered free men; under marble and gold dwells slavery.”
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XC: On the Part Played by Philosophy in the Progress of Man

“Another roof, another proof.”
His motto, as he roamed about the world, as the guest of other mathematicians, as quoted in A Tribute to Paul Erdős (1990) edited by Alan Baker, Béla Bollobás, A. Hajnal, Preface, p. ix