salute, i was inspecting a (~3yr old) 2/12 pitch roof for an upcoming install
that was going to have flashed roof connection points and noticed that i could
not lift up any of the shingles for installing the flashing. the sealing strip
that holds the upper shingle to the one below it, is aggressively stubborn. i
tried several in the area of the array location and they are all sealed down
very well, much better than any other comp shingle i've come across, which
typically lift and separate from the 'sticky strip' with a careful little tug
on the shingle. all the ones i tried began to tear the back off the top
shingle that i was trying to lift. i'm told these are a higher quality comp
shingle and are well suited for low pitch roofs, they have a 35 yr warranty.
i contacted the shingle mfg. tech support and after explaining what i was doing
his suggestion was literally "try lifting them when its warm out then try when
its cold out, see if that works.".... thanks tips!
my first thought was to use a torch to heat and soften up the shingles' sealing
strips that i needed to lift. i'm not surprised that the shingle tech did not
endorse this method. i'm not thrilled about it either. just having a propane
bottle and torch on the roof, risk of overheating (burning) the shingles, extra
time to do this, are things i'd prefer to avoid.
i'm sure if done carefully this method would work, but i'm a little more
cautious than just trying it without asking around so i've been contacting a
few roofers i've worked with, as well i'm wondering if any of you have come
across this issue of having to lift particularly well-sealed comp shingles and
how you have dealt with it.
if the consensus is to stay away from the torch then i'm prepared to go with
the good ol' l-feet on this one.
cheers,benn
DayStar Renewable Energy Inc. b...@daystarsolar.ca780-906-7807 HAVE A SUNNY DAY
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