Their size should match the thickness of the panels to which they are attached.
H clip on roof decking.
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.
Clips are designed to be placed in between two rafters to minimize the span in other words they are meant to almost serve as an additional rafter there should be no need for clips with 19 32 osb 24 o c for standard roof application unless you are working on a flat roof.
Some older h clips do not provide a built in gap.
Not always required but a good idea.
Panel sheathing clips are used to brace unsupported panel edges when sheathing meets edge to edge without a rafter for support.
Grip h clips are designed to make installing roof sheathing faster with better spacing.
H clips increase panel stiffness by allowing distribution of weight between adjacent panels.
They are often used with roof sheathing to keep it from feeling spongy or soft at its edges.
A panel is less likely to deflect when subjected to a heavy load near its edges if it is made stiffer.
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.