Putting on new shingles - IKO brand, Chateau type, single (1) tab,
architectural or "designer" style, 100% asphalt (not fiberglass).

On the back of each shingle is 3 strips (running the full length of
the shingle) near the top, the bottom, and the center. The strips are
some sort of shiny black tar, about 1" wide (but not very thick). Two
of these strips are solid, and one is intermittent (like a dashed line
- - -).

The two solid strips are covered by what seems like a very thin,
transparent release strip made of plastic. This strip resembles
"saran wrap" except it's more "crinkly" when you peel it off and
handle it.

These black tar strips seem to function as a way to bond or seal the
shingles together once they're nailed down and have been heated by the
sun. The release strip would function to prevent the shingles from
bonding to each other while bundled.

What I don't understand is that roofers don't seem to peel the release
strips off the shingles before they nail them down (I admit that it
seems to take as much time to pick away and peel these release strips
off the shingles as it does to nail the shingles down).

So, if the purpose of the black tar strips is to help the layers stick
to each other, then how can the tar strips function if the release
strips are NOT removed from each shingle?

The instructions, diagrams, and warnings printed on the wrappers of
the shingles say nothing about the black tar strip or the membrane
strip that covers them.

Should I peel these strips off before the roofers nail them down?