Main Difference
The main difference between Roof and Ceiling is that the Roof is a covering on the uppermost part of a building or vehicle and Ceiling is a overhead interior surface that covers the upper limit of a room
Roof
A roof is the top covering of a building, including all materials and constructions necessary to support it on the walls of the building or on uprights; it provides protection against rain, snow, sunlight, extremes of temperature, and wind. A roof is part of the building envelope.
The characteristics of a roof are dependent upon the purpose of the building that it covers, the available roofing materials and the local traditions of construction and wider concepts of architectural design and practice and may also be governed by local or national legislation. In most countries a roof protects primarily against rain. A verandah may be roofed with material that protects against sunlight but admits the other elements. The roof of a garden conservatory protects plants from cold, wind, and rain, but admits light.
A roof may also provide additional living space, for example a roof garden.
Ceiling
A ceiling is an overhead interior surface that covers the upper limits of a room. It is not generally considered a structural element, but a finished surface concealing the underside of the roof structure or the floor of a story above. Ceilings can be decorated to taste, and there are many fine examples of frescoes and artwork on ceilings especially in religious buildings.
The most common type of ceiling is the dropped ceiling, which is suspended from structural elements above. Panels of drywall are fastened either directly to the ceiling joists or to a few layers of moisture-proof plywood which are then attached to the joists. Pipework or ducts can be run in the gap above the ceiling, and insulation and fireproofing material can be placed here.
A subset of the dropped ceiling is the suspended ceiling, wherein a network of aluminum struts, as opposed to drywall, are attached to the joists, forming a series of rectangular spaces. Individual pieces of cardboard are then placed inside the bottom of those spaces so that the outer side of the cardboard, interspersed with aluminum rails, is seen as the ceiling from below. This makes it relatively easy to repair the pipes and insulation behind the ceiling, since all that is necessary is to lift off the cardboard, rather than digging through the drywall and then replacing it.
Other types of ceiling include the cathedral ceiling, the concave or barrel-shaped ceiling, the stretched ceiling and the coffered ceiling. Coving often links the ceiling to the surrounding walls. Ceilings can play a part in reducing fire hazard, and a system is available for rating the fire resistance of dropped ceilings.
Roof (noun)
The external covering at the top of a building
Roof (noun)
The upper part of a cavity.
“The palate is the roof of the mouth.”
“Archaeologists discovered that the cave’s roof was decked with paintings.”
Roof (noun)
The surface or bed of rock immediately overlying a bed of coal or a flat vein.
Roof (verb)
To cover or furnish with a roof.
Roof (verb)
To traverse buildings by walking or climbing across their roofs.
Roof (verb)
To put into prison for not a short time.
Ceiling (noun)
The overhead closure of a room.
“the dining room had an ornate ceiling”
Ceiling (noun)
The upper limit of an object or action.
“price ceilings”
Ceiling (noun)
The highest altitude at which an aircraft can safely maintain flight.
Ceiling (noun)
The measurement of visible distance from ground or sea level to an overcast cloud cover; under a clear sky, the ceiling measurement is identified as “unlimited.”
“Even though it was cloudy, there was still enough ceiling for the Blue Angels to perform a great show.”
Ceiling (noun)
The smallest integer greater than or equal to a given number.
“the ceiling of 4.5 is 5, the ceiling of -4.5 is -4”
Ceiling (noun)
The inner planking of a vessel.
Ceiling (verb)
present participle of ceil
Roof (noun)
the structure forming the upper covering of a building or vehicle
“a car with a vinyl roof”
“a thatched roof”
“the rain woke him, hammering on the roof”
“roof timbers”
Roof (noun)
the top inner surface of a covered area or space; the ceiling
“the roof of the cave fell in”
Roof (noun)
used to signify a house or other building, especially in the context of hospitality or shelter
“helping those without a roof over their heads”
“they slept under the same roof”
“a range of childcare facilities all under one roof”
“while you live under my roof you’re not going to have a tattoo”
Roof (noun)
the upper limit or level of prices or wages
“starting salary £12,185, rising to a roof of £16,835”
Roof (verb)
cover with a roof
“the yard had been roughly roofed over with corrugated iron”
Roof (verb)
function as the roof of
“fan vaults roof these magnificent buildings”
Ceiling (noun)
the upper interior surface of a room or other similar compartment
“the books were stacked from floor to ceiling”
Ceiling (noun)
an upper limit set on prices, wages, or expenditure
“the government imposed a wage ceiling of 3 per cent”
Ceiling (noun)
the maximum altitude that a particular aircraft can reach
“the aircraft’s quoted ceiling of 24,000 feet”
Ceiling (noun)
the altitude of the base of a cloud layer.
Ceiling (noun)
the inside planking of a ship’s bottom and sides.
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