thank you! - the new soffit vents make a nice difference
#1
09-11-02, 09:55 AM
thank you! - the new soffit vents make a nice difference
Thanks to all those that replied to my attic ventilation inquire. I bought a rotozip & cut-out 10 more vents to add to the 6 existing (I have a 2700 sq foot home with a hip roof).
we just had 2 hot/humid NJ summer days & the hse didn't go above 76 degrees (use to go up to 85!!).
as I was cutting I came across FG insulation that closed off the soffit from the attic; I removed it from blocking the path of the soffit vent, but should I also remove all FG that is blocking the other areas of the soffit - Question #1: does the FG serve a purpose in the soffit areas that do not have a vent??
Phase 2 will be to add some insulation to the 4" of existing FG. unsure if I’m going to use FG, cellulose or a radiant barrier. I'll be installing a plywwod floor for light storage.
Phase 3 will be to add additional 2 to 3 vents to the 2 existing roof vents. Question#2: should I replace the existing passive roof vents with turbine vents? is it worth the time & effort? I've occasionally read roof vents are as effective as turbines & know not to mix the 2 vents in the same roof. I’ll probably install a ridge vent when I replace the roof in a few yrs.
this forum is really very helpful!!! I would have had a very hard time without so much good input from you guys....thanks again.....wishing Peace to you on this sacred 911 day!!!
we just had 2 hot/humid NJ summer days & the hse didn't go above 76 degrees (use to go up to 85!!).
as I was cutting I came across FG insulation that closed off the soffit from the attic; I removed it from blocking the path of the soffit vent, but should I also remove all FG that is blocking the other areas of the soffit - Question #1: does the FG serve a purpose in the soffit areas that do not have a vent??
Phase 2 will be to add some insulation to the 4" of existing FG. unsure if I’m going to use FG, cellulose or a radiant barrier. I'll be installing a plywwod floor for light storage.
Phase 3 will be to add additional 2 to 3 vents to the 2 existing roof vents. Question#2: should I replace the existing passive roof vents with turbine vents? is it worth the time & effort? I've occasionally read roof vents are as effective as turbines & know not to mix the 2 vents in the same roof. I’ll probably install a ridge vent when I replace the roof in a few yrs.
this forum is really very helpful!!! I would have had a very hard time without so much good input from you guys....thanks again.....wishing Peace to you on this sacred 911 day!!!
#2
09-14-02, 11:30 AM
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Turbines
Turbines work well but you will need 5 to do the job properly.
Net free area for turbine is 97 sq in vs the 49 sq in for a roof vent, this is WITHOUT ANY breeze/wind.
A breeze increases capacity dramatically
Ridge vent work well IF they don't haev a cloth "filter" in them, this "filter" tends to plug up over time and block airflow.
Even when new there is substantial restriction caused by the cloth.
Turbines offer basically a striaght shot out of the roof with little airflow resistance basically a 12" hole, the air doesn't have to make multiple turns through small passageways to escape the attic.
Net free area for turbine is 97 sq in vs the 49 sq in for a roof vent, this is WITHOUT ANY breeze/wind.
A breeze increases capacity dramatically
Ridge vent work well IF they don't haev a cloth "filter" in them, this "filter" tends to plug up over time and block airflow.
Even when new there is substantial restriction caused by the cloth.
Turbines offer basically a striaght shot out of the roof with little airflow resistance basically a 12" hole, the air doesn't have to make multiple turns through small passageways to escape the attic.
