This is in regards to the plastic strip found on the back of the asphalt
shingles that were discussed regarding the removal or lack of.
I guess my spouse and mother wasted a lot of time. Heck who reads instructions!
The film strip on GAFMC fiberglass asphalt shingles is to prevent sticking
together of the shingles while in the bundle. Its removal is not necessary
GAFMC states on all application instructions for our entire shingle product line
"DO NOT REMOVE" in regards to the film strip.
Senior Technical Service Representative
GAF Materials Corporation / US INTEC
If you live in a high wind area (like most of the United States), the reason
the government requires the adhesive is to meet code requirements. So why
would you not remove it? Yes, the plastic tape cover prevents the shingles
sticking together when bundled. But if it isn't meant to be removed when
installed, why is it there. I have seen a BIG differnece in how well roofs
hold up much better when removed.
You have NOT seen a big difference when it is removed. There
is no difference between a roof that was installed correctly
and one in which the installer incorrectly removed the strip.
Why you would want to start a rumor like that, I have no
idea. Unless you missed April 1st and are trying to make up
The strip has NO effect on anything other than keeping the shingles
from sticking together permanently while in the bundle during shipping
Removing the strips is an absurd waste of time. If someone has extra
time on their hands, they should contact Habitat for Humanity.
I have to agree with the manufacturers but I still wonder why. The many
shingles I have seen blown off after a few years all seem to have the strips
firmly stuck to the shingles and no signs of adhesion on either the bottom
of the strips or on the underlying shingles. Could removing the strips make
the adhesion any worse?
Agreed. I thought we settled this issue as follows: the working
adhesive on the shingles is on the top of each shingle. The plastic
strip on the bottom is placed so that it lines up with the working
adhesive strip of the shingle underneath when the shingles are
arranged in bundles. Hence no sticking in the package. When the
shingles are installed with the usual reveal, the plastic strip does
not line up with the adhesive on the shingle underneath, so the
adhesive can now do its job.
P.S. If you remove the plastic strip, you may find adhesive
underneath. But this is just the adhesive to hold the plastic strip
to the shingle, not the adhesive designed to hold the shingles down on
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