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Attic Ventilation Installation Lewiston ME

This page provides useful content and local businesses that can help with your search for Attic Ventilation Installation. You will find helpful, informative articles about Attic Ventilation Installation, including "Attic Ventilation Questions and Answers". You will also find local businesses that provide the products or services that you are looking for. Please scroll down to find the local resources in Lewiston, ME that will answer all of your questions about Attic Ventilation Installation.

Atlas Supply Corp
(800) 244-4726
47 Lincoln St
Lewiston, ME
 
W. E. Reynolds, LLC
PO Box 494
Turner, ME

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Steamatic of Greater Portland, Inc.
(866) 759-1077
4 Hemlock Lane
Gray, ME
 
Revision Energy
(207) 589-4171
91 West Main Street
Liberty, ME
Services
Residential Solar Electricity, Residential Space Heating, Residential Solar Hot Water , Commercial Solar Electricity, Commercial Space Heating, Commercial Solar Hot Water
Membership Organizations
The Green Alliance, Sunpower Premier Dealers, The American Solar Energy Society, Portland Chamber of Commerce, Maine Chapter of the U.S. Green Building Council, Maine Association of Building Efficiency Professionals (MABEP), The Maine Real Estate & Devel

Alpha Water Systems LLC
(207) 838-3445
591 Anderson road
Sebago, ME
Services
Geothermal Heating Systems, Drilled Wells, Water Filtration and Treatment, Well Pump Service

Northeast Mechanical & Energy Management Svc Inc
(207) 666-8330
Lewis Hill Road
Bowdoin, ME
Hours
Mon 09:00 AM-05:00 PM;Tue 09:00 AM-05:00 PM;Wed 09:00 AM-05:00 PM;Thu 09:00 AM-05:00 PM;Fri 09:00 AM

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Guardian Angel Plumbing and Heating, LLC
(207) 712-0346
PO Box 426
Topsham, ME

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EXCEL Plumbing & Heating, LLC
PO Box 999, 20 Cooper Lane
Oxford, ME

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Innis Well Drilling, LLC
(207) 942-5646
64 14th Street
Bangor, ME
Services
Geothermal Heating/Cooling Systems, Well Drilling, Pump Systems Installation and Repair Service, Filtration Systems Installation, Video Well Inspection, Specialized Services

Maine Solar Energy
(207) 232-6595
142 Presumpscot Street
Portland, ME
Services
Solar electricity, Solar hot water, Estimates and Installation

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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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