Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip

Do not nail above the tar strip



This is what CRAPPY roofers do to avoid having nail head show, and will
degrade the life of your roof.

WHY?

Heat kills shingles.

Shingles lose their heat to the roof deck.

If you nail too high on the shingle, the shingle never sets right and
will eventually curl, losing its abilty to get rid of its heat,
accelerating the curling etc etc

If you nail properly, you will waste some shingle by inadvertantly
nailing too low, but you will NOT get leaks from the nails that are
below the tar strip