Roof Rafter Insulation Ventilation

Raft r mate attic rafter vents create a space between each rafter for air to flow freely up the rafters and into the attic.

Roof rafter insulation ventilation.

Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. The fresh air flows up between rafters to the ridge where a ridge vent roof vents or gable vents allow the air to exit. Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings. Baffles establish a channel for air to circulate between the insulation and the roof sheathing.

Set your store to see local availability add to cart. Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. If insulation is allowed to bunch against the inside slope of the roof between the rafters air will be blocked before it can traverse the attic. Owens corning raft r mate attic rafter vents.

Install between rafters to provide an unobstructed air channel through insulation to keep air flowing from soffits to ridge vents. Ibc dictates acceptable placement and composition of roofing materials in chapter 15 but describes required thermal efficiency of the roof in chapter 13 which references the international energy conservation code iecc the minimum required thermal resistance varies. Cathedral ceilings require a continuous run of vents from intake to exhaust with a 1 in. Images courtesy simpson gumpertz heger.

To install the rafter vents staple them directly to the roof decking. The success of a vented attic or roof deck relies on its airtightness. The space above the top plate of exterior walls at the bottom of each rafter bay is especially important. Owens corning raft r mate 22 1 2 in.

The right insulation can save on energy and heating and cooling bills. As with attic floor insulation moisture and heat removal are the reasons for creating proper air. Roof insulation configurations for unvented rafter truss assemblies. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Space between each vent. Item 1571672 model xudv2248. Durovent durovent 22 in x48 in raft vent 10 pack. Attic insulation rafter baffle proper vents 70 pieces model 70rm view the owens corning attic insulation 179 00 179 00.

To install the rafter vents staple them directly to the roof decking. For the same reason insulation shouldn t touch the roof s underside. Rafter vents come in 4 foot lengths and 14 1 2 and 22 1 2 inch widths for different rafter spacings.