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Asphalt shingle replacement, stop those roof leaks!

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Step 5: Don't rip the underlayment!

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You want to leave the underlayment (tarpaper) intact. I tore the tarpaper here with my prybar, looking for a nail. It is very easy to tear 15# underlayment, which many commercial roofers use. Be sure any tears are repaired with the roofing cement.
 
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