PVB interlayer is fabricated by Dupont and PGT under the registered brand Butacite. This interlayer helps by retaining glass shards in case of breakage. Dupont offers this interlayer in clear, translucent white and other solid tints. In Florida, the translucent white is a popular choice when privacy is desired, such as in cabana bathrooms (bathrooms leading to a backyard or pool area). This option is a nice alternative to obscure glass.
The SGP interlayer, also manufactured by DuPont, is more rigid and less likely to tear than PVB. This interlayer permits less glass deflection, a good characteristic for hurricane zones. As a result, impact windows manufacturers use SGP in their larger windows or those windows designed for the highest wind zones.
For more information, you can search for related information such as PGT Windows and Doors