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Air Sealing Where it Counts

The graph below shows which structural air-leaks drive up energy costs the most, allowing you to maximize efforts toward reinforcing your home's building envelope. 

You can chase smaller oppertunities all day long to tighten the home but if you miss the big oppertunities like in your attic you will never have a tight, well sealed home.

The attic usually has about 40% of the leakage in your home. This includes top plates on that attic floor that leak air into or out of stud cavities that are connected to holes like light switches and outlet, can lights (usually a huge source of air leakage) and other penterations like ceiling fans.

When ever you improve the "weatherization" of your home but miss sealing the attic leakage, you're doing little to actually improve the home. Always go for the biggest bang for your buck and in this sistuation its the attic floor. This means that before you add insulation you should think about removing the exsisting insulation and sealinging the attic floor before you add the insulation you want.

Never make this decision without using a blower door test to prove its effectivness for your home. Good luck with making your home more comfortable.

This image comes from http://www.builderonline.com/energy-efficientconstruction/5-penetrations-that-provide-the-most-bang-for-your-air-sealing-buck.aspx 

Comments

This is a very informative

This is a very informative article. When students are studying in the colleges and universities so their have no basic skills who should have to every student. Well, this article is very helpful for every student and I hope they must get the important points in this post. Thanks for sharing the nice information.I appreciated over read your blog entry.Quality of the content is the main element of the blog and this is the way of writing and presenting.Waiting for again wonderful blogs or posts.

This incorporates top plates

This incorporates top plates on that upper room floor that hole air into or out of stud holes that are associated with openings like light switches and outlet, can lights for the most part a gigantic wellspring of air spillage and different penterations like roof fans.

At whatever point you enhance

At whatever point you enhance the "weatherization" of your home yet miss fixing the storage room spillage, you're doing little to really enhance the home.

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