Quote:
Originally Posted by rjm1cc
Not a roofer but my though is that the plastic has to be removed and the heat of the sun will then be able to seal the shingles together.
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You're half right! YOU ARE NOT A ROOFER.

The link I added to post 6.
https://www.gaf.com/Warranties_Techn...R_2011_106.pdf 
It explains alot.