replying to Hipupchuck, Jimmy M wrote:
The problem with this is that the roof vents are used to get rid of heat in
the attic. This is as important in winter as it is summer. Most houses depend
on the soffits to bring in colder air and vent any heat out of the attic
through the roof vents. Altering this can lead to severe mold growth on the
roof sheathing due to condensation.

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On Friday, January 12, 2018 at 2:44:07 PM UTC-5, Jimmy M wrote:
replying to Hipupchuck, Jimmy M wrote:
The problem with this is that the roof vents are used to get rid of heat in
the attic. This is as important in winter as it is summer.

You don't need to cool down attics in the winter. They do need to
be *ventilated* so that moisture doesn't get too high. Typically the
venting winds up cooling it down too, but that's not the main intention.




Most houses depend
on the soffits to bring in colder air and vent any heat out of the attic
through the roof vents. Altering this can lead to severe mold growth on the
roof sheathing due to condensation.



All he's doing is drawing some combustion air from the attic, which
will be replaced by fresh air via all the open vents. I don't
see it altering the air flow significantly or creating problems with excess moisture.