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Open Cell Spray Foam vs. Closed Cell Spray Foam

Closed vs. Open Polyurethane Spray Foam By David Braddy LEED GA Last month we discussed the benefits of a hot roof system using either open or closed cell spray foam. If you missed it you can read it at http://LakeEcoGroup.com Let’s also keep in mind that insulation is the key to energy savings and a […]

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Hot Roof vs Cold Roof

What is a Hot Roof System? By David Braddy LEED GA   Building science is changing rapidly and some of those changes are challenging traditional building methods. One of the most beneficial changes is also one of the most controversial, which is the hot roof system or the unventilated sealed attic. A hot roof is […]

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Diagnosing Moisture Problems in Wall Assemblies

Building Science Digests Download.pdf 1.4 MB BSD-108: Investigating and Diagnosing Moisture Problems By Joseph Lstiburek Created: 2006/10/27 Introduction Water is supposed to be easy to understand.  It only comes in four forms or states [1]. And the rules governing water movement are straightforward: Water runs downhill due to gravity. Air carrying water vapor goes from […]

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This is important to your homes health!

When Sunshine Drives Moisture Into Walls Helpful? 0 Sign in to vote When Sunshine Drives Moisture Into Walls Because of inward solar vapor drive, vapor diffusion from the outside inward is often more worrisome than vapor diffusion from the inside outward — so you need a good vapor barrier strategy Posted on Jul 2 by […]

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Can your home be too tight?

We have heard for years that a home can be built to tight and that a home has to breathe. Well a home does not have to breathe; you do and there are ways that are much safer than leaky walls.

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Which Type of Insulation is best?

By David Braddy LEED GA This is a question I am asked on a regular basis, but it is a question that is not as easy to answer as it sounds. Do you want cellulose or fiberglass, batt or blown? What is the difference between the two? In this area it seems that fiberglass is […]

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Diagram of two options for insulating a crawl space. Option 1 is  exterior foam insulation. A protective membrane covers exterior rigid  insulation and folds over top course of foundation block. Option 2 is  interior foam insulation. Labeled parts include a sill gasket, unfaced  insulation in a band joist, and a 6-mil poly vapor diffusion retarder. A  protective membrane overlaps and extends down insulation to provide  capillary break. Rigid insulation (fire-rated) has joints taped or  sealed. A perforated drainage pipe is embedded in gravel, covered with  filter fabric, and located at the lower perimeter of the foundation  footing to provide drainage.

One of the most overlooked areas of home health is under your house

U.S. Department of Energy – Energy Efficiency and Renewable Energy Energy Savers Crawl Space Insulation If you properly insulate your crawl space—in addition to air sealing and controlling moisture, you will save on energy costs and increase your home’s comfort. Before insulating or deciding whether to add insulation to your crawl space, first see our […]

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Quantum Mechanics – Key to Green Energy?

Scientists Find Photosynthesis Depends on Quantum Entanglement Researchers at DOE’s Lawrence Berkeley National Laboratory (LBNL) have discovered that photosynthesis depends on a relatively obscure physical phenomenon called quantum entanglement. Photosynthesis is the highly efficient process that plants use to convert sunlight and carbon dioxide into sugars and other chemicals, and scientists hope to one day […]

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Solar is Gaining Ground

U.S. Solar Industry Reports Strong Growth in 2009 The U.S. solar industry reported strong growth in 2009, overcoming harsh economic conditions to post a 36% increase in revenues, which totaled $4 billion. The Solar Energy Industries Association (SEIA) released its 2009 annual report on April 15, showing that overall U.S. solar electric capacity grew by […]

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