Some roof questions. my roof shingles look great but some
neighbor's shingles are all streaking. Looking at previous posts, it
must be mold. Roof shingles are either fiberglas based or organic
felts? Is it just the organic based shingles that the mold attacks?
mold eats the organics? are the architectural type shingles fibergas
based? Final question...do you install a new gutter after the roof
is on? if so, the drip edge flashing is under the side of the gutter.
do you get water between the gutter and fascia? THANKS bill