Comments on: A Fistful of New Building Science Videos https://www.energyvanguard.com/blog/a-fistful-of-new-building-science-videos/ Building science knowledge, HVAC design, & fun Wed, 18 Sep 2024 16:02:01 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: lenny kearney https://www.energyvanguard.com/blog/a-fistful-of-new-building-science-videos/#comment-44649 Wed, 18 Sep 2024 16:02:01 +0000 https://www.energyvanguard.com/?p=9175#comment-44649 been thinking of adding insulation to attic (currently white blown in fiberglass) and been reading about air sealing. Sounds like good idea, but it appears the only way to do it correctly is to remove all the existing insulation – then seal everything and reinstall insulation.

THe alternative is to just add a couple inches of cellulose over the existing insulation.

Are the savings (say over 5 years) from sealing enough to justify the cost of the first option?
in 2023 i spent $2,959 in gas and electric . Avg monthly for gas- 107, electric 140
thoughts?

Len

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