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Posted by krw on June 25, 2006, 9:44 pm
briankontio@gmail.com says...
>
> JA wrote:
> > What are the pros and cons for using ridge vents? I'm having my house
> > re-shingled, and got estimates from two highly recommended roofers. One
> > recommended installing a ridge vent; the other did not. The one who did not
> > recommend a ridge vent re-roofed our other house last year and insisted on
> > installing a ridge vent.
> >
> > The house we're re-roofing is a two story "colonial" with an unfinished
> > attic that has both soffit vents and gable vents. The house we re-roofed
> > last year is a bungalow with the second floor (what would normally be the
> > attic) finished.
> >
> > I will discuss this with each of the roofers before I decide which one to
> > hire, but I would appreciate any insight anyone can give me.
> >
> > Also, are there any shingles that really resist algae stains, which seem to
> > be a big problem in my area (Maryland)? Both roofers want to use
> > Certainteed XT25AR, and neither seemed enthusiastic about the more expensive
> > "architectual" shingles, although both were willing to install them if
> > that's what I want.
>
> do you have problems with condensation or does snow melt off of the
> roof from the heat within? if either of these occur, then a ridge vent
> might help. otherwise, if you have soffit and gable vents, i would
> think you have adequate ventilation without adding a ridge vent.
If there are gable end vents ridge vents shouldn't be added
(without blocking the gables). That said, ridge vents are superior
in most climates.
> i don't know about shingles that can resist algae stains. the only
> solution i know of is to put galvanized strips along the ridge. there
> are strips made for such a purpose.
...or copper (wire works too).
--
Keith
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