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Old 05-07-2010, 08:03 AM   #1
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Need advice on attic ventilation


I have a 1948 brick and block house with a rectangular cross-section (36’ x 23’) and a gable roof. There are no soffit vents and no space at present to install them. The gable vents (12” x 18”) are considerably undersized (following the air vent, inc methodology). There is an attic exhaust fan with a mushroom cap. I don’t know the exhaust rate of the fan, but the motor is 1/20 hp, 1500 rpm and the blades are 14”. The attic gets hot - today, the air temp was 80 F and the attic was 110 F. The roof itself has 5 -10 years of life left. I would like to improve the situation, but I’m not sure the “best” way to proceed (a balance between results and money), but I would appreciate any input from the experts.

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Old 05-07-2010, 12:43 PM   #2
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Need advice on attic ventilation


There are fascia venting options available.

http://www.gaf.com/Roofing/Residenti...ascia-Vent.asp

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Old 05-07-2010, 01:55 PM   #3
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Need advice on attic ventilation


You definitely need to add more intake ventilation if you have none currently, but 110 degrees is not bad at all.

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