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NC State Extension

Air Sealing and Insulation Do-It-Yourself Resources


DIY Detecting Air Leaks

Sealing Air Leaks in your Home (video)



 Duct Sealing – Very good DIY video –

DIY Detecting Air Leaks



DIY Attic Hatch


Caulking and Weatherstripping:

DIY Caulking Around Doors and Windows

DIY Caulking Doors and Windows

How to Apply Weather Stripping to your Doors and Windows (video) – The Home Depot shows you how to save on your utility bills by weather-stripping around windows and doors.

Sealing and Insulation:

How to Make a House Energy Efficient – At 1:49 – 4:00 there is a great description of ceiling joists, insulation, and air sealing. Dirty insulation is a sign that sealing is needed. At 4:30 – Sealing around the bath fan. 5:30 – Knee Wall – board foam. 8:20 – description of cellulose insulation.


How to Seal HVAC Ductwork with Mastic – Duct Sealant – (video) For about $1 of Mastic and 10 minutes of effort, you can stop losing money from leaky ducts. Energy Star estimates most homeowners lose 20% of the money they spend to heat and cool their homes because of leaky ducts. The air disappears into the walls and attic spaces without reaching your living space. This is a cheap way to save money and make your rooms comfortable.



Page Last Updated: 5 years ago
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