Buildings Thermal insulation

common insulation applications in apartment building in ontario, canada.

maintaining acceptable temperatures in buildings (by heating , cooling) uses large proportion of global energy consumption. building insulations commonly use principle of small trapped air-cells explained above, e.g. fiberglass (specifically glass wool), cellulose, rock wool, polystyrene foam, urethane foam, vermiculite, perlite, cork, etc. period of time, asbestos used, however, caused health problems.

when insulated, building:

is energy-efficient, saving owner money.
provides more uniform temperatures throughout space. there less temperature gradient both vertically (between ankle height , head height) , horizontally exterior walls, ceilings , windows interior walls, producing more comfortable occupant environment when outside temperatures extremely cold or hot.
has minimal recurring expense. unlike heating , cooling equipment, insulation permanent , not require maintenance, upkeep, or adjustment.
lowers carbon footprint of building.

many forms of thermal insulation reduce noise , vibration, both coming outside , other rooms inside building, producing more comfortable environment.

window insulation film can applied in weatherization applications reduce incoming thermal radiation in summer , loss in winter.

in industry, energy has expended raise, lower, or maintain temperature of objects or process fluids. if these not insulated, increases energy requirements of process, , therefore cost , environmental impact.