Shingle install.

[Robert Jones]

This has probably been covered here before, and quite possibly a question I may have already asked in the past, my apologies! 3 tab shingle install, how much exposure is too much?

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[John Kogel]

That is the work of amateurs, and you are right to call it. Anything more than the correct exposure is too much, IMO.

There's also a good chance they screwed up other stuff and didn't use underlay, either.

[Chad Fabry]

That's too much.

[Jim Katen]

If the courses are stretched so far that the fasteners won't be able to catch the top of the *lower* shingle, then they're spaced too far apart. On 3-tabs, pretty much any stretching will put you over that limit because you only have about 1/2" of nailing zone to begin with.

The shingles in your picture are only held down by half as many fasteners as they should be.

[Brandon Whitmore]

That's not a very steep pitch. I suspect that's a leaker whenever there snow melting up there.

[allseason]

You should not be able to see the top of the key of the lower shingle below the upper shingle.