Dormer

Roofing terms · plain-language definition, with its source

Roofing terms · definition

A roofed projection with a window through the roof slope, adding light and headroom — and several extra flashing/leak details.

Source: Wikipedia — Dormer

Where this comes up on this site

  • Flashing

    Thin water-resistant material installed at joints and transitions (roof-to-wall, around windows and penetrations) to direct water away an…

  • Drip Edge

    Metal edging at eaves and rakes that directs water into the gutter and off the fascia. Code-required and a frequent omission on cheap roofs.

  • Designer / Luxury Shingle

    Premium heavyweight asphalt shingles mimicking slate or shake, the top asphalt tier in cost and appearance.

  • Eave

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

  • Deductible

    The amount the homeowner pays before insurance contributes. Some policies carry a separate, higher wind/hail deductible.

  • EPDM Membrane

    A synthetic rubber single-ply membrane (black or white) for low-slope roofs — durable and economical, seamed with tape or adhesive.

  • Decking Replacement

    Replacing deteriorated roof sheathing during a tear-off — a common change-order cost only revealed once the old roof is off.

  • Exposed-Fastener Metal Roof

    Metal panels screwed through the face — economical but the gaskets age and need periodic fastener service. Common on outbuildings and bud…

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