Venting The Hips On A Metal 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.
Venting the hips on a metal roof. Hot air beneath the metal needs an escape route near the top of the roof and intake vents at the. 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. We could use battens and vent under the metal roof but the attic would not be vented. Roof ventilation depends on the simple scientific fact that hot air rises.
Inches per linear foot 19 051 mm 2 lm of net free ventilating area to help exhaust heat and moisture from the attic. Attic ventilation hip roof how to ventilation hip roof. Metal roofing works well with this because the metal is unaffected by heat not being able to pass through it and enter the attic. The leaving of this 6 defends the structure against wind propelled rains.
At the time of the installation of exhaust vents ensure that you are aware of whether the hip roof features ridge boards not. 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. It provides 9 sq. The other option of course is a vented attic which requires an equal balance of intake and exhaust vents.
Leave uncut sheathing of a 6 at gable ends. The building codes and building science for. When this is done ventilation is removed. Installing some type of ventilation mechanism on a metal roof is not a lot different from the addition of vents to any type of roof.
Cobra hip vent provides effective ventilation on hip roofs with little or no ridge area. Making a conditioned attic is an option although that would most likely require foam or similar method and not likely in the budget. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals.