For spans 28 use two pscas.
Retro fit roof h clips.
Not always required but a good idea.
Reduce frustration of clips falling off or spearing edge of sheet full length expansion bar gives you superior alignment and perfect expansion gap our plywood h clips will not poke holes in the underlayment a problem with some metal roofing clips.
If you re getting a new roof installed and your home has a value of 300 000 or more florida building codes 706 2 and 708 8 1 apply to your property.
Roof retrofit 754 246 9312 adding clips or straps will save you money on hurricane insurance increase the value of your home and give you piece of mind.
This code states that when re roofing a home valued over 300 000 portions of the existing roof trusses are required to have the proper roof to wall retrofit connectors.
What h clips do h clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips.
Refer to 2015 ibc table 2304 8 3 for additional important information.
Maximum roof sheathing span with a single psca is 28.
Some older h clips do not provide a built in gap.