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Posted by on October 17, 2009, 12:42 pm
> > I must have a small roof leak in my 1.5 story, 2 dormer, roof.
> > There is a small darkening spot, about 6" in diameter, on our 1st
> > level bathroom. =A0It's about right at the point where the 1.5 story
> > dormer meets the roofline. =A0From that bedroom I looked out onto the
> > roof and see the shingles as they come up to the roof nailed at the
> > very top where the roof meets the dormer. =A0The top row of shingles ar=
e
> > nailed and the nails are exposed. =A0One nail in particular seems to
> > have broken through the shingle. =A0I'm thinking I need to start there
> > and somehow seal that nail. =A0How should I do that?
> > What else do I need to look for? =A0 How should the roof shingles as
> > they meet the dormer walls be installed? =A0It just seems like that is =
a
> > leak waiting to happen with a wall running down to a roof where it
> > cannot =A0be properly capped. =A0Is there some sort of flashing there?
> Flashing is an art form. =A0Slapping some roofing cement on what you're
> describing is just as likely to trap water and make the leak worse.
> If you posted some pictures of your house, not the generic house, and
> the specific location where you are having a problem, you'd get more
> constructive responses and advice.
> R
Also consider any plumbing vents. Since it's over a bathroom, it
could be from a vent if there is one there. The rubber boots fail
over time. Why not climb into the attic during a rain and take a
look up there?
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> There is a small darkening spot, about 6" in diameter, on our 1st
> level bathroom. =A0It's about right at the point where the 1.5 story
> dormer meets the roofline. =A0From that bedroom I looked out onto the
> roof and see the shingles as they come up to the roof nailed at the
> very top where the roof meets the dormer. =A0The top row of shingles are
> nailed and the nails are exposed. =A0One nail in particular seems to
> have broken through the shingle. =A0I'm thinking I need to start there
> and somehow seal that nail. =A0How should I do that?
> What else do I need to look for? =A0 How should the roof shingles as
> they meet the dormer walls be installed? =A0It just seems like that is a
> leak waiting to happen with a wall running down to a roof where it
> cannot =A0be properly capped. =A0Is there some sort of flashing there?