2007-12-30 12:37:23 · 4 answers · asked by justin n 1 in Home & Garden ➔ Maintenance & Repairs
Your attic is supposed to be the same temperature as outside air. If it is -5, your attic should be the same. You want good ventilation so there isn't a chance for any condensation in the attic because with condensation comes mold on wood.
You want your building insulated properly in the ceiling so there isn't a heat loss into the attic creating more condensation. Have you noticed in the summer the attic is cooking hot? People put in more ventilation when the heat is actually generated on the shingles and transfers inside through the plywood.
There are lots of considerations, are you having problems? Go to http://www.thermoguy.com/globalwarming-heatgain.html to see heat generation and http://www.thermoguy.com/globalwarming-heatloss.html to see the heat loss function
2007-12-31 04:47:27 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Thats a good question. I would say no if you have enough insulation. trapped moister in attics causes many problems
Venting releases moister and also makes shingles last longer by keeping the attic cooler in the summer and cold in the winter preventing ice damming..
2007-12-30 20:48:56 · answer #2 · answered by martywdx 4 · 1⤊ 0⤋
Yes.
You want just enough venting to prevent the build-up of moisture.
Too much venting leads to excess heat loss.
Even through an insulation barrier, you do want to limit the 'Delta T`.
2007-12-30 21:16:54 · answer #3 · answered by Irv S 7 · 1⤊ 0⤋
No, but it does depend on where you live, if its a very windy area you might need to vent one side only. Or a cold are you may want to have closeable vents during winter.
2007-12-30 20:53:17 · answer #4 · answered by Al Smith 2 · 1⤊ 0⤋