Their size should match the thickness of the panels to which they are attached.
H clips on roof sheathing.
Panel sheathing clips are used to brace unsupported panel edges when sheathing meets edge to edge without a rafter for support.
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.
Grip h clips are designed to make installing roof sheathing faster with better spacing.
Space between plywood panels as recommended by the american plywood association.
Some older h clips do not provide a built in gap.
Not always required but a good idea.
They are often used with roof sheathing to keep it from feeling spongy or soft at its edges.
In short roof sheathing clips h clips or edge clips are considered edge support for purposes of span rating they are not edge support for purposes of shear nailing.
So if edge clips are installed one uses the with edge support column for the span rating.
Plywood clips also referred to as h clips or panel edge clips are small metal brackets placed between the unsupported edges of plywood sheathing to effectively reduce the support spacing and stiffen the plywood.
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.