They tend to be unsuccessful in drying wet roofs unless wetting can be eliminated at the source and the venting system designed to facilitate drying. Venting can be achieved without stack vents [see CBD-99] or systems can be used that do not need vents [see CBD-150]. PRAC...
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In the transverse direction along - and venting, flat roof - element for the production of fertighaeusern in a timber.WISSLER GEORG ANTON, DE