Venting For 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.

Venting for hip roof.

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. Cobra hip vent provides effective ventilation on hip roofs with little or no ridge area. The idea of roof vents existed for hundreds of years with natural vents employed in chinese buildings during the tang dynasty natural ventilation ducts in the buddhist monks caves and wind catchers incorporated in arabian architecture. November 19 2014 9 09pm 5.

Inches per linear foot 19 051 mm 2 lm of net free ventilating area to help exhaust heat and moisture from the attic. Ventsure 4 foot strip heat moisture ridge vent. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. At the time of the installation of exhaust vents ensure that you are aware of whether the hip roof features ridge boards not.

Center nails between rafters 18 in. Roof vents will provide about half of the vent area and soffit vents the other half. Mark attic roof air vent locations. Leave uncut sheathing of a 6 at gable ends.

Drive nails up through the sheathing and shingles to mark roof air vent locations. The building codes and building science for. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Attic ventilation hip roof how to ventilation hip roof.

How to install roof vents. From the roof s peak. There are twelve soffit vents sized 4 x16 on the hip roof. Mono you mentioned in one of your other posts about only having a very limited amount of soffit vents on your home.

Venting hip roof 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. It provides 9 sq.