Proper Hip Roof Venting

A frequent problem with hip roofs is that the ridge is either short or doesn t really exist.

Proper hip roof venting.

A ridge vent is a ventilation strip that is placed along the ridgeline of the home. Ventsure 4 foot strip heat moisture ridge vent. And in many of these cases the hip roof forms a large volumetric attic space to ventilate. Your roof vents may not look.

Touch your ceiling on a warm sunny day. Attic ventilation hip roof how to ventilation hip roof. For best performance the airspace in the vent chute should be a minimum of 2 in. Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent.

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. Calculate 20 per cent more for 7 12 to 10 12 pitches and 30 per cent more for a pitch that is 11 12 or greater. If the slope of your roof is greater than 6 12 you will need more ventilation to reflect the extra volume of attic space. Install additional soffit intakes keeping existing intakes clean the screens and run an attic fan that s cfm rated higher than necessary to make sure.

Look at your eaves and roof. If you don t see any attic vents on the roof or in the eaves you need to add some. 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. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches.

One method is to use a powered attic vent with a humidistat thermostat located close to the ridge or top of the roof. The leaving of this 6 defends the structure against wind propelled rains. Unless you re bulk filling rafter bays between 2 10 or 2 8 rafters with closed cell spray foam this approach will likely require you to fur out the rafters to accommodate additional insulation to achieve desired r values. Leave uncut sheathing of a 6 at gable ends.

It is important that air movement occurs and is not impeded by any framing members of the home. Asphalt roofing and nrca.