# roof deck

> English word · Noun

## Definitions
1. The flat layer of construction materials to which the weather impervious layers are attached to a form a roof. It is known as the "roof deck", and they may be either level (for a "flat" rooftop) or sloped.
2. An upper deck of a ship that provides shelter for another deck underneath.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/roof-deck