You cannot have soffit vents, fascia intake vents, power intake boosters, or solar powered intake boosters on a roof. They just move air from one intake to other intake. The Edge by Air Vent may not be placed anywhere near another intake vent like a soffit vent or they communicate. If they are far apart, the Venturi Effect will allow for the compounding of intake systems. The draw from the exhaust will do this because the heating air is a chimney like effect and not a blow in. Some slight negative pressure is inevitable but if properly ventilated and balanced this will not drop the atmospheric pressure in the home, and we all know what that can do: Radon Gas!
Bad roofers cause cancer.
Here are Jon's Laws of Attic Ventilation:
The soffit vent is connected to the ridge vent.
The soffit vent is connected to the gable end vent.
The soffit vent is connected to the low profile vents.
The soffit vent is connected to the electric power vent.
The soffit vent is connected to the solar power vent.
The soffit vent is connected to the turbines.
The soffit vent is connected to the power gable vent.
You may not add a different type of exhaust vent to these systems.
The The Edge by Air Vent vent is connected to the ridge vent.
The Edge by Air Vent is connected to the gable end vent.
The Edge by Air Vent is connected to the low profile vents.
The Edge by Air Vent is connected to the electric power vent.
The Edge by Air Vent is connected to the solar power vent.
The Edge by Air Vent is connected to the turbines.
The Edge by Air Vent is connected to the power gable vent.
You may not add another type of exhaust vent to these attic ventilation systems and you may not add another type of intake vent near The Edge by Air Vent. If the different type of intake vents are far apart it is okay.
The Fascia Vent by GAF is connected to the ridge vent.
The Fascia Vent by GAF is connected to the gable end vent.
The Fascia Vent by GAF is connected to the low profile vents.
The Fascia Vent by GAF is connected to the electric power vent.
The Fascia Vent by GAF is connected to the solar power vent.
The Fascia Vent by GAF is connected to the turbines.
No soffit vent, power intake booster, solar powered intake booster or any other intake vent may be close to the Fascia Vent by GAF.
These rules apply to all roof vents generically:
1) Only one exhaust system may be used at one level. This rule may be broken if the attic is compartmentalized.
2) Only one intake system may be used in a given area of the roof by due to the draw effect of the exhaust vents, several intake systems may be used on one attic ventilation system if they are far enough apart for the Venturi Effect to compensate for their difference in altitude.
3) Exhaust must be the same or slightly less than intake.
4) There must be a minimum of one square foot of ventilation divided equally between intake and exhaust for every three hundred square feet of attic floor.
5) An attic is defined as the contiguous area surrounded by the ceiling, roof deck, and any wall siding. Separate air spaces are separate attics.
6) Pick up sticks.
www.jonwrightroofing.com
You may not add any type of vent to these sentences.
3 comments:
Nice post.
A good ventilation system for your roof will have an air intake hose along with an exhaust hose. This system works to provide adequate ventilation of air both within the roof and under it.
marijina
The nails themselves also will contribute to this moisture problem as iron is a good conductor of temperature and will readily convey the biting chill of cold winter air directly inside the attic. The evidence of this, can be seen in the form of drips and of drip spots underneath the nails themselves.
What a nice blog i like it so much thanks for this type of blog.
jessimen
Excellent post,
The first thing you should know is that HVAC is an abbreviation for Heating, Ventillation and Air Conditioning. This kind of device is a one piece unit that provides all your heating and cooling needs.
Thanks for this great sharing.
marijina
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