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Ralph Mowery

In article ,
says...

Note: No caulking outside will hold up for 13 years. With an
important thing like a roof, get that caulking checked and
repaired once a year or two.

A roof done properly does not rely on caulking to begin with.

Right, if a house roof is done correctly it should last for 20 or more
years without doing anything unless damaged by hail or very high winds
or something falling on it.

Some of the campers and such seem to need recoating with a sealent,
however I have no experence with them, just what I have been told by a
few friends that have them.