Take the 2-minute tour ×  I am adding bathroom exhaust fans. The
roof caps I have attach directly to the duct (this is not the
model I have, but it clearly shows how the duct attaches):  roof
cap with duct attachment  I had a lot of trouble trying to get
the flashing slid up beneath the shingles with the duct attached
- in fact, at this moment the cap isn't attached to any duct
while I come up with a game plan. The main trouble is the length
of the duct. This is exaggerated but shows the problem: the
complicating factor  Does anyone have any tips or advice on how
to do this? It's worth mentioning that I am trying to do this
myself, though I am aware that it's normally a two-person job. I
can't see how my main problem of not being able to get the
flashing slid up between the shingles would be helped with
another person, but - I'm listening!  share|improve this
question Is there any reason you're doing it with the duct
attached, as opposed to fixing it to the roof, then coming in
from underneath to attach the d