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Preventing Water Intrusion with Through-Wall Flashing

DonanEngineering Articles, Commercial & Residential Roofing, Forensic Engineer, Forensic Engineering, Water Losses

What is through-wall flashing?  According to the International Residential Code (IRC), flashing refers to a corrosion-resistant material that is installed in a shingle-like fashion so that it will prevent water from entering the building envelope or contacting framing members. More specifically, through-wall flashing is a corrosion-resistant material that extends through the exterior weathering surface (siding, veneer, etc.) and behind the …