Very Important roofing information

[Rusty]

Originally Posted by SIKSUKR

Just a easy fix tip fyi. When I last reroofed my house I noticed a lot of the failed shingles were where the sheathing butted together in between the framing because they warped away from each other. The pic below is not my roof but it shows what we noticed, cracked shingles on a horizontal lines through different shingles which indicated an issue with the sheathing. We needed to install "H" clips but how to install now? Easy. Just drilled a hole big enough to slip the h-clip through and slide over both sheets. Worked really slick and I thought I was pretty clever suggesting this to my roofer.

Adding H clips when the sheathing never had them and there is no space between each section will not do anything to create a space.
Drilling a hole just to slide the H clip in doesn't make sense.

H clips are spacers that go between each section of the sheathing before nailing it down and will create a space the full length.

[SIKSUKR]

Originally Posted by Rusty

Adding H clips when the sheathing never had them and there is no space between each section will not do anything to create a space.
Drilling a hole just to slide the H clip in doesn't make sense.

H clips are spacers that go between each section of the sheathing before nailing it down and will create a space the full length.

You obviously dont know what h clips are used for based on your comment.
They are primarily for this:
If we place the H-clips at the halfway point (12") between the trusses and/or rafters, the adjoining sheathing panel stiffens
considerably. As a result, the fastening of the roof shingles will be easier and the roof will remain flatter and more “in plane” over time (i.e., no sags and/or bowing due to accumulated load).
They do also provide a small spacing for expansion if the sheahing gets wet before shingling but that is not what they really are for.It supports abutting plywood between rafters and keeps them from bowing in different directions.You might want to do a little research before you comment on something you seem to have little knowledge of.