Insulation residential

Residential Construction. Owing to rising energy costs, the cost and low thermal conductivity are of prime importance in wall and ceiling insulation of residential buildings. The combination of insulation efficiency, desirable stmctural properties, ease of appHcation, abiHty to reduce air infiltration, and moisture resistance has led to use of extmded polymeric foam in residential constmction as sheathing, as perimeter and floor insulation under concrete, and as a combined plaster base and insulation for walls. 

Commercial Construction. The same attributes desirable on residential constmction appHcations hold for commercial constmction as weU but insulation quaHty, permanence, moisture insensitivity, and resistance to free2e—thaw cycling in the presence of water are of greater significance. For this reason ceUular plastics have greater appHcation here. Both polystyrene and polyurethane foams are highly desirable roof insulations in commercial as in residential constmction. 

These foams are used for board stock in commercial and industrial buildings as insulation for internal cavity and external walls, roof, floor, and foundations. Spray-appHed foam, covered subsequently with one of a variety of protective coatings, is widely used for large roofing appHcations and has limited use as external walls. Eor residential buildings, the principal use is as external sheathing board. 

U.S. Residential Insulation Industy, U.S. Dept, of Commerce, Washiagton, D.C., Aug. 1977, Survey Report. 

Includes commercial and residential building, heavy con-stmction, maintenance, and insulating glass. ... 

Wodd War II supported the growth of asbestos fiber production for military applications, typically in thermal insulation and fire protection. Such applications were later extended into residential or industrial constmctions for several decades foUowing the war. 

See also. Air Conditioning Air Quality, Indoor Appliances Building Design, Residential Coal Consumption of Consumption Edison, Thomas Alva Electric Power Transmission and Distribution Systems Heat and Heating Insulation Lighting Natural Gas, Consumption... 

Thermal insulation is available over a wide range of temperatures, from near absolute zero (-273 C) ( 59.4°F) to perhaps 3,(1()0°C (5,432°F). Applications include residential and commercial buildings, high- or low-temperature industrial processes, ground and air vehicles, and shipping containers. The materials and systems in use can be broadly characterized as air-filled fibrous or porous, cellular solids, closed-cell polymer foams containing a gas other than air, evacuated powder-filled panels, or reflective foil systems. 

Dichlorofluoro-ethane (CCI2FCH5) The leading substitute blowing agent for CFC-11 in rigid foam insulation applications such as construction (commercial, residential, and public), appliances, and transport vehicles. 

Difluorochloro-ethane (CH5CCIF2) An effective replacement for CFC-12 in rigid polyurethane, polystyrene, and polyethylene foam insulation applications. Uses include both residential and commercial construction and process piping. 

Rigid polyurethane foams can be made from either polyester or polyether prepolymers, which are crosslinked with polyfunctional isocyanates. The resulting foams are largely closed cell, with only about 5 to 10% of cells being open. Rigid polyurethane foams are widely used as insulation in commercial, residential, and industrial settings. 

Cellulose insulation commonly refers to a loose fill product produced from ground newspaper. Due to the energy crisis of late 1970s and early 1980s, the use of cellulose insulation in residential markets came to prominence. The appeal of cellulose as an insulation material can be attributed to its good thermal insulation, the relative ease of installation, and the simplicity of its production. Most importantly, it is produced from nonpetroleum-based materials (i.e., recycled newspapers). 

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