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Kiko Denzer on Art
[Cob] Are roof overhangs absolutely necessary?Christopher Higgo christopher at lard.za.org
Tue Aug 3 03:25:47 PDT 2010
Hi, I want to build a one-and-a-half storey cob house. The architectural restrictions in the area I live in in Cape Town call for clipped eaves; so no overhang. But the area, in winter, has quite a lot of wind-driven rain. This combination got me worried about the walls lasting. But after seeing many pictures of old cob buildings in wet climates which are double-storey and have double pitched roofs (so 2 of the 4 exterior walls are completely exposed, and the ground floor is exposed all the way around), that have lasted a couple of centuries, I have begun to question the common wisdom about the absolute necessity of overhangs. What do you think? Are they absolutely necessary or can a good lime rendering alone protect the walls from rain? Has anyone built a lasting cob structure in a winter rainfall area without roof overhangs? One example: 17th Century cob cottage in Devon, double storey, double pitched roof, clipped eaves. http://www.english-country-cottages.co.uk/sites/english-country- cottages/pages/PropertyDetails_C.aspx?QS=2B831DC8-E0A4-4868-B1DF- DDB2FE4FD44A~C~HEEA~HCG~216~GBP~4~0~~A~N~1~BAE699D2-1219-6505-7A07- AC378919C91A~7207~0~6~N~N~N~N~N&awc=2393_1280828513_9855889cfdfe451ac1e5 9568f698e864 Christopher
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