PVB (polyvinyl butyral) is the standard interlayer in residential impact glass and satisfies Miami-Dade HVHZ requirements for most window openings. The material is flexible enough to absorb impact energy and hold fractured glass in position, preventing a breach of the building envelope. For standard-size residential openings at typical exposure heights, PVB laminated glass provides effective storm protection at a lower cost point than upgraded alternatives.
SentryGlas Plus (SGP) is a stiffer, stronger interlayer that maintains its structural integrity under higher loads. In Miami, Haven Home Remodeling Group specifies SGP for openings where the design pressure requirement is elevated: large picture windows, ground-floor sliding glass units with direct exposure, and any opening where the size-to-pressure ratio pushes PVB toward its performance limits. The cost difference between PVB and SGP is meaningful but proportional to the added protection. Haven presents both options with the engineering context for each opening so the homeowner makes the selection with complete data.