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Ceiling

technology Maturity 11-13 Next article →

A ceiling is the overhead part of a room. It covers the upper limits of an indoor space. Most ceilings are not structural parts of a building. Instead, they are finished surfaces that hide things above. They can hide a roof or a floor from another story. A ceiling can also be the top of a tunnel.

California Mid-Century Modern Home with open-beam ceiling 1960
California Mid-Century Modern Home with open-beam ceiling 1960

Many ceilings work by hanging down from the structure above. This is called a dropped ceiling. It creates a gap between the ceiling and the roof. People use this space to run pipes or air ducts. They also put insulation and fireproofing in this gap. One kind is a suspended ceiling. It uses aluminum struts to hold up cardboard pieces.

California Mid-Century Modern Home with open-beam ceiling 1960
California Mid-Century Modern Home with open-beam ceiling 1960

Suspended ceilings make repairs much easier for workers. You can just lift off the cardboard panels. This lets you reach the pipes and insulation behind them. You do not have to dig through drywall to fix things. Some ceilings use drywall fastened to wooden joists. Other ceilings use spray foam or spray paint. This leaves the pipes and ducts visible but painted.

California Mid-Century Modern Home with open-beam ceiling 1960
California Mid-Century Modern Home with open-beam ceiling 1960

Ceilings come in many different shapes and styles. A cathedral ceiling is very tall like in a church. A coffered ceiling has a grid of sunken square panels. Some ceilings are curved and look like a barrel. A stretched ceiling uses panels of material like PVC. Coving is used to link the ceiling to the walls. These shapes can change how a room looks or sounds.

California Mid-Century Modern Home with open-beam ceiling 1960
California Mid-Century Modern Home with open-beam ceiling 1960

People have decorated ceilings with art for a long time. They use mosaic tiles or paintings called frescoes. The famous Sistine Chapel ceiling was painted by Michelangelo. High ceilings keep art safe from dust and fingers. However, smoke from candles used to damage them in the past. Some ceilings also help stop the spread of fire. Special systems can even rate how much fire a ceiling resists.

California Mid-Century Modern Home with open-beam ceiling 1960
California Mid-Century Modern Home with open-beam ceiling 1960
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