Beefing up the insulation

The highest recommendation made during my energy audit was to add insulation in the attic.  Since the second floor has a vaulted ceiling i could only add insulation in the area over the living room, dining room, and kitchen – the front of the house.  When i moved in it had a layer of R11 insulation and looked like this.

R11 insulation
R11 insulation

The ceiling joists are 24 inches apart and are 2x6s.  I found a few bales of R11 insulation and a few years ago rolled them out perpendicular to the joists.

First, i rolled up the second layer of R11 insulation.  I figured that the gaps caused by the 2×6 being taller than the first course of R11 would end up being a channel for the warmed air to escape.  Then i took the R38 insulation and just laid it out on top of the insulation you see in the above photo.

R38 added.
R38 added.

You can see that there is a vast increase in the amount of insulation.  I took care to make sure that seams were pretty tight.  I rolled out one of the bales of R11 on top of the R38 – perpendicular to the joists again.  But the stuff i have is faced and I worry about moisture retention within the insulation.

There are no eave vents or gable vents.  I’m thinking of adding a gable mounted solar powered attic fan.  In the spring I’ll work on adding vents to the eaves.

zieak (2207 Posts)

Ryan "Zieak" McFarland dabbles. Beards. Making things. Travel. Genealogy. Frugality and excessiveness. Fitness and fatness. He's a PE teacher in India, usually calls Alaska home and is a happy father to two boys and the husband to a suddenly crafty wife.

4 thoughts on “Beefing up the insulation”

  1. Yeah. The worst part was that i didn’t get it done in one session. In fact, i still need 18 square feet to complete it so i’ll be itchy 3 times as a result. I insulated the attic of my first house too. I swear I’m never doing it again.

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