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Old 03-30-2013, 08:33 AM   #1
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Undereave question


I noticed that my soffits do not have any perforations in them. Can I assume that these are not vented soffits?
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Old 03-30-2013, 08:39 AM   #2
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Undereave question


No holes, no vents.
Got a picture?
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Old 03-30-2013, 11:03 AM   #3
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No holes, no vents.
Got a picture?
We have gable vents.
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Old 03-30-2013, 11:30 AM   #4
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Undereave question


"We have gable vents" Nice Picture.

Before you ask, yes you need insulation baffles if you install continuous soffit venting. Before you ask, yes you should be able to do it from the under eaves. Yes, you can retrofit a continuous ridge vent. Yes, you should close off the gable end vents if you do add continuous soffit and ridge venting.

Do you need to do all this? Probably not. Maybe you have a poorly sealed attic entrance, an exhaust fan blowing into the attic, heat loss at lighting fixtures, high internal humidity from burning gas, etc. etc. etc.

We have to assume you are asking about your soffits for a reason, I guess.
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Old 03-30-2013, 04:02 PM   #5
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Undereave question


and as a reminder, photos go a long way in getting specific answers
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Old 03-30-2013, 04:06 PM   #6
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Undereave question


If there's no soffit vents then any other venting is all but usless.
Try sucking on a straw with your finger over the end of it? Works the same way.
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Old 03-30-2013, 08:51 PM   #7
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Undereave question


When I first bought my house, which was new construction, I didn't know much about attic venting let alone most DIY stuff. The builder never bothered to install any soffit vents at all. On the lower level roof (tri-level home) one of the cutouts for a static vent was simply covered with a piece of asphalt shingle laid upside down over the hole. I ended up learning about attic venting by reading home improvement books and bought about 30 small soffit vents and installed them equally between the upper and lower levels, and also doubled up on the attic insulation, which was so minimal that I reduced my heating bill by almost half the following year. Within the last two years I enlarged all of the soffit vent cutouts and installed large vents. Now the roof stays snow covered much longer than before.
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Old 03-31-2013, 08:57 AM   #8
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When I first bought my house, which was new construction, I didn't know much about attic venting let alone most DIY stuff. The builder never bothered to install any soffit vents at all. On the lower level roof (tri-level home) one of the cutouts for a static vent was simply covered with a piece of asphalt shingle laid upside down over the hole. I ended up learning about attic venting by reading home improvement books and bought about 30 small soffit vents and installed them equally between the upper and lower levels, and also doubled up on the attic insulation, which was so minimal that I reduced my heating bill by almost half the following year. Within the last two years I enlarged all of the soffit vent cutouts and installed large vents. Now the roof stays snow covered much longer than before.

I've installed the 8" x16" soffit vents on many houses in my area back in the 90's. measure the entie length of overhang and divide by the spacing chosen between the soffits, usually 6 to 8'. Now I know that continuous soffit is way better and can be installed to the outer edge of the overhang near the fascia. have to get into the attic (or reach up in after cutting soffit) and make sure that the rafter bay is open for air flow (baffle boards) or else soffit vent is useless and of course a ridge vent will need to be cut in at the ridge as well. installing vents in overhangs taught me the importance of a good walkboard and ladder setup and a face mask and goggles, there is no telling what is falling out of the soffit after you cut into it and yank it down

Last edited by hand drive; 03-31-2013 at 09:00 AM.
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