More than 50 of the attic fans i see do not work and have current still live to the motor.
Does an attic need to be vented.
I had a homeowner recently send me this question about how to vent a metal roof.
Many contractors recommend you ventilate the attic while others deem it unnecessary.
In this post you ll learn whether you need to vent your garage attic or not based on your situation.
In order to facilitate this.
Ridge vent must me installed per the manufactures instructions.
However the designs need to be climate sensitive.
To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles.
So i ll start by saying something that might sound controversial but really isn t.
How many roof vents do you need.
The other option of course is a vented attic which requires an equal balance of intake and exhaust vents.
Roof ridge vents are attractive and effective.
Vented attic roof designs have the advantage of a long proven historical track record.
I need a roof and would like standing seam aluminum since i live on the water.
The choice of the venting approach is up to the designer.
Attic ventilation works to protect the indoor structure of buildings in many ways such as maintaining a cold roof temperature to control ice dams to vent moisture that moves from the conditioned space to the attic to vent and expel solar heated hot air from the attic to lessen building cooling etc.
Your roofing contractor can provide the exact number of roof vents needed for your particular roof but the rule of thumb is one vent for every 300 square.
And it gets even dicier when it relates to the garage.
Once your roof is adequately vented to allow the hot air to escape and the cool air to enter the attic space your home will be more comfortable year round.
About attic ventilation.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
A vented attic where insulation is placed on an air sealed attic floor is one of the most underappreciated building assemblies that we have in the history of building science.
Attic ventilation has been a controversial topic among building contractors.
According to the.
All you need to know about attic ventilation.
Do not use mechanical means electric attic fans.
A vented ridge cap covered with metal matching the roof is installed along the ridges entire length allowing hot attic air to escape.
So much information has been devoted to the subject of roof venting that it s easy to become confused and to lose focus.
In the summer natural air flow in a well vented attic moves super heated air out of the attic protecting roof shingles and removing moisture.
One of the leading causes for fires.
Best ventilation is open soffit venting to a open vented ridge vent.
Complete coverage of the attic.