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1380 Channeled Vents Versus Cross Ventilation - Insulation Energy Efficiency
 
1380 Channeled Vents Versus Cross Ventilation - Insulation Energy Efficiency -

Image Text: For cathedral ceilings and flat roofs the recommended vent area is 1 square foot for every 150 square feet of roof area > Channeled vents > cross section > 3 inch air space > roof sheathing > shingles > roof rafter > soffit vent > air flow > siding > insulation > drywall > wall stud > insulation > Cross ventilation > cross section > roof membrane > roof sheathing > 1 inch below top of joist > 2 inch x 2 inch purlins (perpendicular to joists) > roof joist > soffit vent > air flow > siding > wall stud > drywall > insulation > open web trusses also permit cross ventilation

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INSULATION

The Basics, Air/Vapor Barriers (Vapor Retarders), Venting Roofs, Venting Living Spaces, Attics, Flat and Cathedral Roofs, Walls Above Grade, Basements and Crawlspaces, Floors over Unheated Areas, Ventilation Systems

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