2006-06-09 09:13:51 · 6 answers · asked by John G 1 in Home & Garden ➔ Do It Yourself (DIY)
Yes you do. The idea is, that since hot air rises, cool air will be drawn into the attic from the eave vents as the hot air escapes through the gable vents. You are likely to see a 15 degree difference in the air temperature if you provide the eave vents.
Good luck with your project.
2006-06-13 01:39:59 · answer #1 · answered by exbuilder 7 · 9⤊ 0⤋
The code requirements on this are clear. You can use the formula of 1 sq. ft of vent to every 300 sq. ft of attic space if you have gable vents. If the gable vents are sufficient to supply all of the required venting space you need then you do not have to have eve vents. If they are not then you must use eve vents to supply the rest of the required ventilation.
Example:
3000 square foot house divided by 300 would require 10 square feet of venting. If the gable vents give you ten square feet of venting you are done.
2006-06-09 10:13:35 · answer #2 · answered by unusualpsycho 4 · 0⤊ 0⤋
Yes, you do. The idea is that the hot air will go out of the gable vents and thus pull in cool air from the under eave vents. this will also help remove moisture from the attic.
2006-06-09 09:18:18 · answer #3 · answered by soar 3 · 0⤊ 0⤋
Yes.
Air needs to be able to flow up through the undereave vents and out through a ridge vent (at the top of your roof).... or, in your case, gable vents. This is the best approach to ensure longevity of your shingles and roof as a whole.
Circulation of airflow in your attic also helps to reduce possibility of mold growth, prevention of ice dams, etc. etc.
Install the undereave vents!
2006-06-09 09:19:59 · answer #4 · answered by firm_shake 4 · 0⤊ 0⤋
I would suggest ridge vents as well.
2006-06-09 09:23:19 · answer #5 · answered by Anonymous · 0⤊ 0⤋
No you dont need them as a rule, but it wont hurt to have them added if you should decide to.
2006-06-09 09:16:56 · answer #6 · answered by Biker 6 · 0⤊ 0⤋