Insulation Baffle

Roofing terms · plain-language definition, with its source

Roofing terms · definition

A chute at the eave keeping insulation from blocking soffit-vent airflow into the attic.

Source: Wikipedia — Attic (Ventilation)

  • Eave

    The lower roof edge that overhangs the wall. Ice-and-water protection, drip edge, and gutters all key off the eave.

  • Insulation

    Material that resists heat flow, rated by R-value, installed in walls, ceilings, and floors. Opened walls are the opportunity to upgrade…

  • Soffit

    The finished underside of the roof overhang that houses intake ventilation and closes the eave.

  • Low-Slope vs. Steep-Slope

    The dividing line (about 3:12) that determines whether shingles can be used or a membrane system is required.

  • Impact-Rated Shingle

    A Class 4 (UL 2218) hail-resistant shingle that may earn an insurance premium discount in hail-prone regions.

  • Manufacturer Warranty

    Coverage on the shingles/system from the maker. Enhanced/system warranties require all-matched components and certified-installer registr…

  • Ice Dam

    A ridge of ice at the eave from attic heat melting and refreezing snow, forcing water back under shingles. Fixed by air-sealing, insulati…

  • Modified Bitumen

    A rolled, polymer-modified asphalt membrane for low-slope roofs, torch- or self-adhered. A common residential flat-roof system.

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