For the prevention of dead air pouches cover up the complete ridge using ridge vent.
Best attic ventilation for hip roof.
Of attic floor space.
What is the optimal ventilation for a hip roof we have a hip roof in need of replacement and there is discrepancy in the ventilation suggestions.
One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof.
Try covering the full ridge of the hip roof using cobra exhaust vent.
Mark attic roof air vent locations.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
From the roof s peak.
This means for every 150 square feet of attic floor space there should be 1 square foot of net free area.
Enter square footage calculate or enter the square footage of the attic or area to be vented.
Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.
And in many of these cases the hip roof forms a large volumetric attic space to ventilate.
Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic.
Of course there should be intake vents to ensure a balanced system.
Cut the shingles for roof vents.
It provides 9 sq.
This will ensure protection against weather finest appearance.
Drive nails up through the sheathing and.
They now have solar powered units which provice a cfm rating of 800 cfm.
Another way to achieve the proper amount of air flowage instead of using the 10 feet of ridge vent would be to use only a powered attic ventilator fan on the roof top but definitely not using any additional roof top exhaust vents.
Cut the hole for roof vents.
How to install roof vents.
The code minimum for attic ventilation in the 2012 irc section r806 roof ventilation 1 is as follows.
Of net free area for every 150 sq.
One contractor is recommending 2 attic fans and a ridge vent one is recommending 1 attic fan and a ridge vent and one is recommending 1 attic fan and 2 box vents.
Installation of attic ventilation.