Will be having a roofing job, and the roofer suggested a "ridge roof vent"
be added by him when he
does the new shingle installation.
Did a Google search on these things, but a bit confused how they work.
a. what keeps the rain out if the rain is driven horizontally by a strong
wind, which sometimes does happen ?
Wouldn't any "horiz" or near horiz. rain get right into the attic ?
b. Didn't see any mention of screens for these things. What keeps the bugs
and flies out ?
c. BTW: do they come in different materials ? If so, what would I want ?
All in all, a good idea in your opinions ?
(what's a typical or reasonable cost for a typical 40' or so length roof
line for the item and installation ?)
I don't know how, but the seem to stay dry even in strong driving rains.
They all have a bug filter they construction. It is more like open
foam. It works.
As far as I know, yes, but as far as I have been able to determine they
all seem to work well.
In my opinion, yes. I had it added to my roof when they re-roofed after
hail damage. No extra charge. Good deal and they did a good job. Well
actually there was a sort of extra charge. I told them they did not need to
replace the down spouts and gutters that were dented as the damage was minor
so they offered upgraded materials and venting.
errr...on the ridge?
Recently had a friend report a ceiling leak cause by a recently
installed ridge vent that allowed driven snow to collect on the attic
floor and drip through the ceiling. Seems he's trying to find some
open cell foam or the like to install to prevent a repeat.
They usally have a mesh or labrynth(sp) -like trap to keep out driven
rain. The bugs are kept out the same way. Materials can be of steel or
aluminum, or spun polyester around a stiff plastic weave, which I
prefer visually, as it's ridge-capped over. Just don't step on it).
Good idea, IMO, as you can't have too much ventilation. I've charged a
few bucks a foot in the past for certain installations. Tom
The only trouble I had were sparrows working hard to break into attic.
Finally had to removed, added hardware cloth, wide mesh screen, and
replaced ridge vent.
never any water, no bugs, much cooler attic
According to the contractor doing my renovation, ridge vents are NOT
recommended in Florida because they are susceptible to hurricane damage.
During 2004-5 hurricanes in this area many ridge vents ripped off like
zippers, which then exposed the roof to more damage. (The contractor doing
my work is extremely cautious about any openings in the roof, including
skylights and solotubes, feeling that -- especially during heavy storms --
they have the potential to become the source of problems, no matter how well
Insurance will pay for the damage. YOU pay for the increased electric bills
and premature roof-replacement due to heat.
Get a hurricane-friendly ridge-vent and make sure it is installed with
hurricanes in mind.
Well, one alternative is to have no vents. The roof will be hotter and
the roofing will degrade more quickly. Hurricane force winds aren't
that choosy - they will take your shingles, tiles, etc. Our closest
call was 70 mph wind, my maximum tolerable :o) Our 6x15' skylight took
flight, but that was because one end had leaked for years and years and
the wood it had been attached to rotted away. We had a pretty shabby
reroof done in '97, before I lived here, with lots and lots of shingles
falling off due to improper nailing. Two major reworks, and a few other
callbacks resulted in getting glue stuck under all of the flaps of the
shingles - the silver lining to our dark cloud was that the extra
adhesive probably is what kept us from losing a lot more in the
hurricane blow-by. Only lost 3, when most of the surrounding area lost
large amounts, especially on older roofs.
We have a weird roof on our condo, with square vents on top of mansards.
I kept bugging people when it appeared that we were losing more
shingles on the sunny side of the roof. One owner finally took a look
at the vent and found it stuffed with fiberglass, apparently to keep
rats out. That's another story.
If a ridge vent flies off, it was probably fastened with staples.
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