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PamelaGann
New roof with no soffit vents
PamelaGann

I would like to put a new roof on my house. I live in MA. Here is my question...... There is currently only gable venting and 2 vents cut into the roof itself. There is currently no soffit or ridge venting. The house was insulated a couple of years ago with blown in insulation in the attic and dense pack in the slopes. Do I need to address the ventilation before putting a new roof on or is it OK as it is? I have read many different things about this and my head is spinning.
Cost is definitely a factor.

keith3267
Re: New roof with no soffit vents
keith3267

You mention dense packing on the slopes, is this a cape cod or some other "story and a half" where it second floor is built into the rafters with knee walls and a sloped section of the walls? Do you have soffits where vents could be installed?

ed21
Re: New roof with no soffit vents
ed21

If there are no problems now, I would leave good enough alone.
Even without soffit venting, a ridge vent would still provide additional venting. I don't know what the other vents look like, but if they are old, worn out, corroded, etc. replace them.

dj1
Re: New roof with no soffit vents
dj1

Quote: "There is currently only gable venting and 2 vents cut into the roof itself."

Let me ask you about these two vents in the roof: what kind, how big, can you upload a photo?

PamelaGann
Re: New roof with no soffit vents
PamelaGann
keith3267 wrote:

You mention dense packing on the slopes, is this a cape cod or some other "story and a half" where it second floor is built into the rafters with knee walls and a sloped section of the walls? Do you have soffits where vents could be installed?

Yes. It is a cape style 2 story house with 3 dormers. The eaves hang over enough to add soffit venting, but the cost of doing that is my concern.

PamelaGann
Re: New roof with no soffit vents
PamelaGann
dj1 wrote:

Quote: "There is currently only gable venting and 2 vents cut into the roof itself."

Let me ask you about these two vents in the roof: what kind, how big, can you upload a photo?

I tried unsuccessfully to upload photos. These vents were installed the same time as the insulation was.

keith3267
Re: New roof with no soffit vents
keith3267

Adding soffit vents should not be that expensive. It can be done with a drill and a hole saw pretty easily. If there is cavity above the soffit, then you only need one vent every 4 - 6 feet.

Do you plan on DYI or hiring a contractor?

Are the vents in the roof those turbine type or powered fans with a cover? Actually it doesn't really matter. If you add the soffit vents when you get a new roof, you can have those vents covered and a ridge vent installed, or cover them and just use the gable vents as long as the combined area of the gable vents is between 1/300th to 1/150th of the total area of the attic.

PamelaGann
Re: New roof with no soffit vents
PamelaGann
keith3267 wrote:

Adding soffit vents should not be that expensive. It can be done with a drill and a hole saw pretty easily. If there is cavity above the soffit, then you only need one vent every 4 - 6 feet.

Do you plan on DYI or hiring a contractor?

Are the vents in the roof those turbine type or powered fans with a cover? Actually it doesn't really matter. If you add the soffit vents when you get a new roof, you can have those vents covered and a ridge vent installed, or cover them and just use the gable vents as long as the combined area of the gable vents is between 1/300th to 1/150th of the total area of the attic.

I would have to hire someone to do the work needed. Thanks for your input.

ed21
Re: New roof with no soffit vents
ed21

I got the impression the attic including the soffits are filled with blown in insulation. Adding soffit vents would be a major job that would involve removing insulation to get the soffits clear and adding baffles.

keith3267
Re: New roof with no soffit vents
keith3267

The attic was blown in, but I would question whether any insulation was added behind the knee wall. If there wasn't any access to the knee wall cavity, then there wouldn't be any insulation there. This would be something else to address.

llmotoll
Re: New roof with no soffit vents
llmotoll

Gable ventilation is the best form of roof ventilation because it is not a roof component. It is all you need. The other two vents installed now could be removed during next roof renovation, unless you want to keep them they will not hurt anything by staying in place.
Soffit ventilation not required.

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