Well, you've got maybe 10 years on me, and I also did just that; Fixed
other roofers' mistakes. Will you please explain to me the effect that
removing the release tape has on shingle removal? Tom
I'm not going into great detail, but the tidbits I list, all have a bearing
on the end result.
You may or may not know, major manufacturers, manufacture covering for
different regions. Usually about half a dozen regions in the United States.
There's not one shingle that is formulated/manufactured to be used across
the entire country, by any major manufacturer. Although, I know of one that
breaks down the USA into 3 regions.
One manufacture in particular, has a huge problem of keeping their product
straight for packaging. You probably ran across this one in your time,
where shingles are stuck together, simply because the product wasn't
straight when it was packaged.
Quality control fluctuates even in ISO certified conditions.
The adhesive put on the back on the covering for the release tape also will
fluctuate, once in awhile there are excessive amounts beyond the amount
called in the specifications to keep the release tape on, more often than
not, this seems like a normal amount.
For the average 3 tab 12x36 shingle, installed for average pitch/climate
conditions, there will be 8 nails in it. As you know, you must remove the
nails from the shingle/s above and adjoining the deficient shingle. You
also must break the tar _seal_
with a flat bar, which is best done with the
covering cool. Now, if the release tape has been removed, and the adhesive
was excessive either by intention or by fluctuation, you now have another
area which has sealed. The problem is, you must get the flat bar under a
full 7" or 2" above the keyway. Problem is, if this is done when it is
cool, and the covering has lost flexibility to where you can't bend tabs
without breaking, it creates an additional barrier in which you must work
around. I won't even go into the problem of replacements when the covering
is hot, and adhesive is sticky.
Manufacturers spend millions of dollars for design, although some spend
more in advertising than in product design. When you see the product is
manufactured with tolerances of +/- 1/4", it is the manufacture who spent
on advertising, instead of design.
A quality roofing product is designed so the entire roof doesn't come off
in highwinds, of course there is only so much of a guarantee the
manufacturer can be liable for.
I did a lot of work in my days, in tornado alley. I seen some installers
trying experiments on structures, selling it as snake oil. I've worked on
countless structures, where removal of release tape caused problems.
You of course, apparently never ran into a problem when the release tape
had been removed. I find that interesting.