Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture·Page 37·7.2
Roof design approach for weather protection
Roofs can protect buildings by either holding precipitation at the outer face or preventing it from penetrating the roofing system.
Roofing can be designed to protect a building from the weather either by holding the precipitation at the face of the roof or by stopping it from penetrating beyond the back of the roofing system.
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