Q: Earlier this year there was a discussion on JLC’s website regarding the proper width for flashing tape that’s used to seal around windows. Can you settle what is recommended and what is required?

A: Mike Guertin, a builder and remodeler in East Greenwich, R.I., and a presenter at JLC Live, responds: The 2015 IRC does not list a specific minimum width for flashing tape, but it does give us some prescriptive guidance. Section R703.4 subsection 1, entitled “Exterior Window and Door Openings,” says: “Flashing at exterior window and door...

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