Best way to cool an attic 1.
Best way to vent attic.
A 60 40 split is a good sweet spot.
Insulation at least r 38 or more is there for heating and.
If you re serious about finding the best way to keep an attic cool this guide has the answers you need.
Luckily with today s building technology.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
The code minimum for attic ventilation in the 2012 irc section r806 roof ventilation 1 is as follows.
Finding the best way to ventilate an attic in your home can become a real thermal nightmare.
Of attic floor space.
It can do both.
Fans and vents may be installed on the roof system that will draw the air out of the attic space and exhaust it to the exterior.
We ll start with the easiest methods that most homeowners can do and work our way up to the more time consuming diy projects.
Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them.
Unbalanced ventilation should be in favor of the lower vents gable and soffit because you don t want to depressurize the attic.
In order to facilitate this exchange of warm and cool air the general rule.
More ventilation at the eaves than at the ridge will slightly pressurize the attic.
Below you ll find the top 7 best ways to cool your attic down.
These fans may be controlled by a switch or a thermostat which detects heat build up in the attic space and automatically exhausts the attic space.
Photos 1 6 show how it s done.
Ridge vent must me installed per the manufactures instructions.
We supposedly vent attics to 1 remove moisture and 2 remove heat to lower air conditioning costs and increase roof shingle life.
I suggest you read some of the well written and informative articles by joseph lstiburek founding principal of building science corp for guidance on ventilation and insulation issues.
A depressurized attic can suck conditioned air out of the living space and losing that conditioned air wastes money.
Of net free area for every 150 sq.
For best results provide between 50 and 75 of the ventilation space at the eaves.
One last thought attic ventilation is not there to get rid of heat it is there to get rid of excess moisture accumulating from the home.
Whole house fans powered attic fans.
Best ventilation is open soffit venting to a open vented ridge vent.
This means for every 150 square feet of attic floor space there should be 1 square foot of net free area.
Adding attic vents is a simple matter of cutting holes and installing vents.
But before you cut any holes plan the locations of the attic vents.
