Weatherization (American English) or weatherproofing (British English) is the practice of protecting a building and its interior from the elements, particularly from sunlight, precipitation, and wind, and of modifying a building to reduce energy consumption and optimize energy efficiency.

Weatherization is distinct from building insulation, although building insulation requires weatherization for proper functioning. Many types of insulation can be thought of as weatherization, because they block drafts or protect from cold winds. Whereas insulation primarily reduces "conductive" heat flow, weatherization primarily reduces "convective" heat flow.

In the United States, buildings use one third of all energy consumed and two thirds of all electricity. Additionally, they are a major source of the pollution that causes urban air quality problems and pollutants that contribute to climate change. Buildings account for 49 percent of sulfur dioxide emissions, 25 percent of nitrous oxide emissions, and 10 percent of particulate emissions. [ [] Arizona State University, "Building Materials." 2006. Retrieved 2 March 2008.]

Weatherization procedures

Typical weatherization procedures include:
* Sealing bypasses (cracks, gaps, holes), especially around doors, windows, pipes that penetrate the attic ceiling, and other areas with high potential for heat loss, using caulk, foam sealant, weather-stripping, window film, door sweeps, electrical receptacle gaskets, and so on to reduce infiltration.
* Protecting pipes from corrosion and freezing.
* Installing footing drains, foundation waterproofing membranes, interior perimeter drains, sump pump, gutters, downspout extensions, downward-sloping grading, French drains, swales, and other techniques to protect a building from both surface water and ground water.
* Providing proper ventilation to unconditioned spaces to protect a building from the effects of condensation. See Ventilation issues in houses
* Installing roofing, building wrap, siding, flashing, skylights or solar tubes and making sure they are in good condition on an existing building.
* Installing insulation in walls, floors, and ceilings, around ducts and pipes, around water heaters, and near the foundation and sill.
* Installing storm doors and storm windows.
* Replacing old drafty doors with tightly sealing, foam-core doors.
* Replacing older windows with low-energy, double-glazed windows.

The phrase "whole-house weatherization" extends the traditional definition of weatherization to include installation of modern, energy-saving heating and cooling equipment, or repair of old, inefficient equipment (furnaces, boilers, water heaters, programmable thermostats, air conditioners, and so on). The "Whole-House" approach also looks at how the house performs as a system.

US Weatherization Assistance Program

Weatherization has become increasingly high-profile as the cost of home heating has risen. The US Weatherization Assistance Program (WAP) was created in 1976 to help poverty families reduce energy consumption and costs. WAP reaches across all fifty states, the District of Columbia, and Native American tribes. The goal of WAP is to assist low-income families by reducing energy bills and decrease dependency on foreign oil by decreasing energy use.

The US Department of Energy estimates that over 5.6 million homes have been weatherized, saving 30.5 million MBtu of energy each year. It estimates weatherization returns $2.69 for each dollar spent on the program, realized in energy and non-energy benefits. Families whose homes are weatherized are expected to save $358 on their first year's utility bills. [US Department of Energy. [ Weatherization Assistance Program.] Retrieved on 29 February 2008]

Many state LIHEAP (Low Income Home Energy Assistance) programs work side by side with WAP to provide both immediate and long term solutions to energy poverty.


ee also

*Building envelope
*Building indoor environment
*Central heating
*Vapor barrier
* [ WikiBooks How-to guide to Weatherization]

External links

* [ Houston Advanced Research Center]
* [ Richard Haut]
* [ The Weatherization Assistance Program (WAP) Technical Assistance Center (WAPTAC)]
* [ The WAP System for Identifying and Reviewing New Technologies and Techniques]
* [ US EPA publication on home sealing]
* [

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • weatherization — noun see weatherize …   New Collegiate Dictionary

  • weatherization — noun the process of weatherizing Syn: weatherproofing …   Wiktionary

  • Weatherization —   Caulking and weatherstripping to reduce air infiltration and exfiltration into/out of a building …   Energy terms

  • weatherization — weath·er·i·za·tion …   English syllables

  • weatherization — noun see weatherize …   Useful english dictionary

  • Assistance for weatherization of residence —   The household received services free, or at a reduced cost, from the Federal, State, or local Government. Any of the following services could have been received: * Insulation in the attic, outside wall, or basement/crawlspace below the floor of …   Energy terms

  • weatherize — weatherization, n. /wedh euh ruyz /, v.t., weatherized, weatherizing. to make (a house or other building) secure against cold or stormy weather, as by adding insulation, siding, and storm windows. Also, esp. Brit., weatherise. [1940 45; WEATHER + …   Universalium

  • Office of Energy Efficiency and Renewable Energy — The Office of Energy Efficiency and Renewable Energy (EERE) is an office within the United States Department of Energy that invests in high risk, high value research and development in the fields of energy efficiency and renewable energy… …   Wikipedia

  • Energy policy of the United States — The energy policy of the United States is determined by federal, state and local public entities in the United States, which address issues of energy production, distribution, and consumption, such as building codes and gas mileage standards.… …   Wikipedia

  • Solar air conditioning — refers to any air conditioning (cooling) system that uses solar power. This can be done through passive solar, photovoltaic conversion (sun to electricity), or solar thermal energy conversion. The U.S. Energy Independence and Security Act of… …   Wikipedia

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