plural of roofing nail

(military) The practice of dropping a nonexplosive or low-yield device on a target around 10 to 15 minutes before a bombing in order to caution any civilians present to flee, so as to minimize civilian casualties.

plural of roof rabbit

(dated) A sunroof.

plural of sunshine roof

(roofing) A continuous, semi-flexible roof membrane, consisting of multiple plies of saturated felts, coated felts, fabrics or mats assembled in place with alternate layers of bitumen, and surfaced with mineral aggregate, bituminous materials, a liquid-applied coating or a granule-surfaced cap sheet.

Alternative spelling of snow on the rooftop

(technical, construction, US) According to ASTM standard E 1918-97, a roof whose uppermost part is installed at a slope of 2/12 or 1:6 (9.5 degrees) or less.

(roofing) an insulated and ballasted roofing assembly in which the insulation and ballast are applied on top of the membrane (sometimes referred to as an "inverted roof assembly").

(roofing) A roof system in which the principal roof covering is a single layer of flexible membrane often thermoset or thermoplastic.