1:5:10:365 EcoTip Blog

February 16, 2008

:047 Isolate the Crawlspace

foamed_holes_t.jpg

Suggested Review – :040, :041

Welcome to today’s 1:5:10:365 Tip for becoming a better steward for our home and planet.

1:5:10:047 Tip: If you have a crawlspace under your home, there is a good chance that there are pathways for air to infiltrate. Sealing those pathways can help improve indoor air quality and energy efficiency. Some of the typical pathways include places where electrical and plumbing wires penetrate the structure. Expanding foam insulation is available to fill these openings. Large openings may need to be bridged with screen to give the foam a place to anchor.

Tomorrow I will have more information on checking crawlspaces.

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Additional Information

Crawlspaces can be dangerous places. During my career I have inspected over 1000 crawlspaces. Many had conditions that were extremely dangerous.

If you don’t know how to safely enter and inspect a crawlspace, you should leave it to professionals.

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February 10, 2008

:041 Sealing Out Infiltration

Suggested Review – :039, :040

Today’s 1:5:10:365 Tip for becoming a better steward for our home and planet deals with sealing outlets to prevent air infiltration and save energy.

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source: www.cityofames.org/.../SelfAudit/Default.htm

1:5:10:041 Tip: Inexpensive gaskets are available that can be used to seal wall outlets to help prevent air infiltration.  You can purchase these at any hardware store. Make sure to check with the Wizard Stick after installation to be sure the gasket has properly sealed the outlet cover.

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Additional Information

The EPA EnergyStar program has an excellent guide to sealing infiltration leaks at:

http://www.energystar.gov/ia/home_improvement/home_sealing/DIY_COLOR_100_dpi.pdf

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February 9, 2008

:040 Tracking Infiltration

Suggested Review – :039

Welcome to today’s 1:5:10:365 Tip for becoming a better steward for our home and planet.

air-infil-1.jpg   source:http://resourcecenter.pnl.gov/cocoon/morf/ResourceCenter/article/146

1:5:10:040 Tip: According to the EPA air infiltration is responsible for 25 to 40% of our heating and air conditioning bill. Air infiltration can waste much more energy than missing insulation. Severe leaks can be felt as drafts, but a Wizard Stick is much more sensitive. Place a puff of the smoke near an electrical outlet sharing an exterior wall. If the smoke blows away from the outlet you have infiltration of air from the outside. If the smoke goes into the outlet then air is flowing out. Flow in either direction may present issues. Not only can this waste energy, but also provides a pathway for dusts, insulation and other unwanted particles to enter the home or moisture to enter the walls.

Sealing infiltration pathways not only lowers your energy bill but helps improve indoor air quality.

Over the next several days I will talk about correcting air infiltration.

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Additional Information

EPA EnergyStar information on air infiltration: http://www.energystar.gov/ia/new_homes/features/AirSealing1-17-01.pdf

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