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sparky30_06
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# Posted: 6 Nov 2016 20:02
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ok so how much difference will you feel if you use R13 in the ceiling instead of R19? In the summer temps are a tad over 100 but usually not out there and in the winter we might get a couple of nights down under freezing.
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MtnDon
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# Posted: 6 Nov 2016 20:38
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We had R-13 ceiling for the first winter. It was never meant to be the total amount of insulation. We used it as it was available cheap because of a store closing; it was faced and I could quickly staple it in place and get the T&G boards in place. The next year we blew in cellulose to the tune of about R45. There was an amazing difference. We never had a hot summer to compare but we quickly noticed that we cut 2 hours off our winter warm up time. With R13 and 20 F outside it would take 4 hours to get to 70 F inside. With the added cellulose we cut that time in half.
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bldginsp
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# Posted: 6 Nov 2016 21:16
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Quoting: sparky30_06 how much difference will you feel
You'll feel it in the pocketbook with heating costs, or how much wood you have to chop and keep feeding that stove.
Since insulation just lowers the rate at which heat is lost, with less insulation you have to add more heat constantly to keep up with the greater loss.
Gone are the days of uninsulated houses with huge, inefficient gas furnaces turned on full blast while the cold air crept in around the cracks in windows and doors.
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Steve_S
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# Posted: 6 Nov 2016 21:44
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Extra insulation can help keep the heat out in summer as well which helps you out as well. Just has to be done properly relative to the material your using.
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KinAlberta
Member
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# Posted: 6 Nov 2016 23:01
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In our city home we added insulation to the attic (a third layer) I'm guessing that we now have it at about 20+" deep. We also upgraded to triple pane windows. We noticed no difference in the winter though I would guess our furnace runs less.
The only difference we did notice was increasing discomfort at night after a few hot days in the summer. Since we get long days of sunlight, I think it slowly heats up over a few days and the heat doesn't escape out of the vents fast enough. So we feel it radiating down on us in our bedroom. (Much like the heat coming off a oven after it's been used).
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Steve_S
Member
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# Posted: 7 Nov 2016 05:46
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Quoting: KinAlberta I think it slowly heats up over a few days and the heat doesn't escape out of the vents fast enough.
I think you just put an Item in your "Job Jar" for the springtime  . Maybe a whirly-bird or other form of roof venting + intake.
Are you sure the baffles between the sheathing & insulation are clear and allowing free air flow ? They crush easily when someone is "stuffing" insulation in... Blown Insulation can often plug them up as well.
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sparky30_06
Member
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# Posted: 7 Nov 2016 06:51
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the ceiling is framed with 2x6 so I can't get 20" of blown insulation up there. wire the r panel roof she will get plenty of air flow that's for sure so it should convect a nice draft in the summer. So not to be a tight wad but if I use all R13 I will save $100 over doing R13 in the walls and R19 in the ceiling. I could use that $100 towards a better AC unit
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TerraLove
Member
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# Posted: 10 Nov 2016 15:38
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One thing to watch out for with extra insulation is condensation.
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