How Do You Vent A Hip Roof

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.

How do you vent a hip roof.

Unless you re bulk filling rafter. For the prevention of dead air pouches cover up the complete ridge using ridge vent. For best performance the airspace in the vent chute should be a minimum of 2 in. Installation of attic ventilation.

Nail the jack rafters to the hip rafters and secure them to the walls. Try covering the full ridge of the hip roof using cobra exhaust vent. This will ensure protection against weather finest appearance. 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.

The code calls for a minimum of 1 in. Lots of builders out here vent hips by cutting notches in the top corners of the rafters and thereby making a plenum along the hip which carries air flow to vents at the ridge or mushrooms higher up. 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. If you choose to vent the roof deck then be serious about it and really vent it.

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. They now have solar powered units which provice a cfm rating of 800 cfm.