Attic Ventilation Installation Maumee OH

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Sandys & Associates Inc
(419) 865-0261
5461 Suthwyck Blvd Ste 2a Toledo
Toledo, OH
Airguard Industries Inc
(419) 666-2888
751 3rd St Perrysburg
Perrysburg, OH
Slade Associates Inc
(419) 531-6157
P.O. BOX 3522828 Toledo
Toledo, OH
Airsolve Inc
(419) 535-1184
2416 Barrington Dr Toledo
Toledo, OH
Wojos Heating & A/C Inc
(419) 693-3220
5523 Woodville Rd
Northwood , OH
Clean Air Systems Inc
(419) 867-7400
1708 Commerce Rd Holland
Holland, OH
Johnson Controls
(419) 866-9292
6156 Trust Dr Holland
Holland, OH
Astro Enterprises
(419) 473-6966
P.O. BOX 352502 Toledo
Toledo, OH
Astro Pollution Controls
(419) 473-6966
5552 Secor Rd Toledo
Toledo, OH
Bluflame Service Co
(419) 472-2040
1815 W Sylvania Ave
Toledo , OH

Attic Ventilation Questions and Answers

Attic Ventilation Requirements

What is the proper ratio of ventilation per square foot of roof?

1.5 in per sq. ft. Just make sure that the ventilation is installed so an airway is formed to remove heat through the highest part from the lowest part. Ridge vents and soffit vents work best for this. Also, it is better to have ventilation the entire roof length rather than the 8x12 square vents occasionally in the soffit.

I can't say if it's cost efficient or not, but my attic fan cools the attic a lot. When it's in the 70s outside and the attic fan has not run at all, the attic is too hot to go in. On hot days (80+) it comes on in the early afternoon and runs until about 6:00pm. When it's running I can go into the attic without any problem and it's much cooler.

Another Answer:

The ventilation ratios go according to attic floor size not roof size. You can go as low as 1/300 of the attic floor area (for attics which have a continuous vapor barrier below) to a high of 1.5 in inches x the floor area in feet. So a 1000 sq. feet of attic floor area would require between 480 sq. inches to 1500 sq. inches. That is a huge difference in allowance. I would go with the higher number.
One other thing.. the best system uses ridge vents and soffit vents skipping gable end vents entirely. The number would be split about 50-50 between soffits and ridge.


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