Last summer, I blogged about my pantry
problems and
plans. The goal at the time was a "solar pantry," by which I meant putting the auxiliary fridge and freezer located in the pantry on solar power. After much analysis and planning, we moved the
fridge and freezer onto the back porch and
set them up on solar there (phase 1).
Phase 2 of this project focuses on the energy efficiency of the pantry itself. As part of
my analysis last summer, I kept track of the pantry air temperature, and discovered it can get into the lower 90sF (upper 20sC) in the heat of summer. Not ideal for food storage.
The plan for phase 2 is to replace the old single-glazed windows with energy efficient windows, increase insulation in the walls, and experiment with passive cooling methods. It's going to be another pay-as-we-go project, so it won't happen overnight. But we've made a start.
Dan started with this wall.
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| My 4-foot chest freezer used to live along this wall. |
Our first idea was to take down the paneling and put this stuff
↓ between the studs.
The 4-foot by 8-foot foam board sheets come in several thicknesses, with this 2-inch having the highest R-value. At roughly $30 a sheet it's pricey, but Home Depot carries it so we could buy a few sheets at a time and gradually work our way around the room. Unfortunately, Dan found it extremely frustrating to work with.
The ad video makes it look super easy to install. The sheets are pre-scored at 16-inch intervals, so just cut and pop in.
Except, our studs are 16 inches
on center, meaning that 16 inches is the measurement from the middle of one stud to the next. Our wall space between the studs is more like 14⅝ inches. On top of that, it was difficult to cut the foam cleanly, and Dan completely lost enthusiasm for the project after finally finishing that one wall.
So the project sat for awhile, until one recent rainy day, when we headed over to our discount builders supply warehouse to look for replacement windows.
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| One of two original pantry windows. |
We found two brand new, still in the wrapping, energy star rated windows, the exact same size as the old windows, for $80 each. Perfect!
The first step was to remove the window trim and wall paneling.
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| Old window. |
We had the old window removed and the new one installed in less than an hour! That's a first for this old house, where replacing windows usually takes several days from start to finish. Having the same size replacement helps!
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New window. The first thing we noticed
was how quiet the room had become! |
We have the other window to replace, but also, we have to decide what to do about the walls. Adding the 2-inch foam board is out for several reasons, the first because it was so difficult to work with. Even if we did want it, Home Depot is now out of stock, which no projected restocking date. Another deterrent is that the current batting insulation is stapled to the outer wall, which would make it a mess to remove.
So the plan under consideration right now is to apply 1-inch foam board directly on top of the studs. We'd lose a couple of inches of floor space, but it would still work. The batting is R-11 and the 1-inch sheets are R-5, which would give us and R-16 insulation value for the outer walls. Then we'd have to replace the old paneling, because it pretty much splintered when Dan pulled it off. (Ha! Not heart-broken over that!)
While we're mulling that over, Dan is replacing the window trim on the outside.
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Old window out, new window in.
We had a beautiful day to do this! |
Besides the walls, we still have to figure out a ventilation system and explore passive cooling ideas. More on that one of these days.
