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Seal Air Leaks to Prevent Heat Loss

How To Address Sealing Air Leaks

Many people think that just because a house is insulated that the insulation is effectively performing its job.

The truth is that in order to improve the energy efficiency of your insulation you seal air leaks to prevent heat loss.

Insulation works best when air is not moving through or around it. Sealing air leaks is not hard, you just need to know where to look.

What are air leaks?

Air leaks are areas of warm air leaking into your home during the summer and out of your home during the winter.

Where To Look for Air leaks:

Air leaks typically occur in the same spots on most houses. You can often spot them by looking for dirty spots in your insulation, which often indicate holes where air leaks into and out of your house. You can seal the holes with low-expansion spray foam made for this purpose.  Learning the locations to
seal air leaks to prevent heat loss is easy, see below:

Common Sources of Air Leaks:

1. Holes around pipes and wires.

2. Recessed lights, bathroom fans and electrical boxes.

3. Attic doors and hatches.

4. Chimney chases.

5. Drywall joints between the wall and ceiling plates.

6. Sofits framed with openings to the attic.

7. Leaking HVAC ducts.

8. Any framed chases or special framed areas open below the attic floor.

How to Seal Air leaks:

The best way to deal with these leaks is cover them with a combination or metal, wood or foam and then insulate that area.  For more information on sealing air leaks read these articles for additional details and photos.  
Air Leak Sealing Demonstrated
How to Seal Air Leaks


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