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Old 06-26-2008, 08:40 AM
 
1,740 posts, read 5,185,142 times
Reputation: 336

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Quote:
Originally Posted by scuba steve View Post
I'm going to start installing one this weekend. It'll probably take a while though. I'm going to record outdoor and attic temperatures before and after to try and see if it makes a difference.

I have yet to get a bill from the power company. Utilities were turned on around the 25th of last month so I should get one pretty soon... actually I already got one from the water company so I'll probably call over today to see what's going on.
Keep us posted. My last house had radiant barrier and was horribly hot in the attic. I added additional insullation but never a radiant barrier. Our current attic is hot - but doesn't feel as hot as our last house, although I have no temps to compare.

Rain sure would help cool things down...
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Old 06-26-2008, 08:45 AM
 
Location: Charleston, SC
5,615 posts, read 12,793,011 times
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Quote:
Originally Posted by sxybeast View Post
I received my bill for June and it is 240$. I have 3300 SQFT house. I have programmable thermostat. I have set it to 78 at night and 80 in the morning. I am thinking of doing a radiant barrier. Does any one know how much it is going to cost me? also is it worth doing it?

Thanks
Rolls of the stuff at Lowes were $4.something when I checked. Of course, how many rolls do you need... that's the big question. The stuff looks like it fits between the roof beams and you leave those uncovered. It's supposed to drape down a bit so there's a gap and looks like you staple it in (hopefully wide enough to just staple to the beams. It doesn't matter if it's a tight fit between the material and whatever it's attached to.
Quote:
Originally Posted by banker View Post
Keep us posted. My last house had radiant barrier and was horribly hot in the attic. I added additional insullation but never a radiant barrier. Our current attic is hot - but doesn't feel as hot as our last house, although I have no temps to compare.
The house I'm in now, the attic isn't that bad You could actually tell there was air venting as designed. The last house, maybe something was blocked because it was an oven in there.

I'm an engineer, so I want before/after numbers to go over!
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Old 06-26-2008, 10:54 AM
 
Location: San Antonio, TX
1,512 posts, read 2,607,689 times
Reputation: 2219
It may be pretty expensive, but you can also check into companies that install solar-powered attic fans. They are flush-mounted and only come on when the thermostat installed in the attic reaches a user-selected temperature. Once that happens, the vents activate and suck the warm air out.

My parents (Sonoma Ranch) are looking at them. They were quoted 2k for four vents (installed) in a one-story home.

--Dim
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Old 06-26-2008, 11:24 AM
 
Location: SoCal-So Proud!
4,263 posts, read 9,692,196 times
Reputation: 1541
Quote:
Originally Posted by the_dimwit View Post
It may be pretty expensive, but you can also check into companies that install solar-powered attic fans. They are flush-mounted and only come on when the thermostat installed in the attic reaches a user-selected temperature. Once that happens, the vents activate and suck the warm air out.

My parents (Sonoma Ranch) are looking at them. They were quoted 2k for four vents (installed) in a one-story home.

--Dim
Dim- We have this in our garage. (no room over the garage).
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Old 06-26-2008, 12:13 PM
 
1,740 posts, read 5,185,142 times
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Quote:
Originally Posted by the_dimwit View Post
It may be pretty expensive, but you can also check into companies that install solar-powered attic fans. They are flush-mounted and only come on when the thermostat installed in the attic reaches a user-selected temperature. Once that happens, the vents activate and suck the warm air out.

My parents (Sonoma Ranch) are looking at them. They were quoted 2k for four vents (installed) in a one-story home.

--Dim
Never heard of these. I had a powered (hard wired) attic fan set to a thermostat in our last house - but solar would be best. Where do you get this?
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Old 06-26-2008, 12:34 PM
 
Location: San Antonio, TX
1,512 posts, read 2,607,689 times
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Quote:
Originally Posted by firstclassflyer View Post
Dim- We have this in our garage. (no room over the garage).
Do you see some sort of a difference from before? So far, we seem to be doing ok. Bills haven't really gone that high (for us, at least) and the house stays between 76-78. We have an Energy Star home, though, so that makes a bit of a difference. Even still, I've noticed the bedroom closets upstairs (walk-in in all guest rooms, master is down) can get a bit warm if the doors are closed. I figured it was vaulted ceilings that were to blame.

--Dim
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Old 06-26-2008, 12:35 PM
 
Location: San Antonio, TX
1,512 posts, read 2,607,689 times
Reputation: 2219
Quote:
Originally Posted by banker View Post
Never heard of these. I had a powered (hard wired) attic fan set to a thermostat in our last house - but solar would be best. Where do you get this?
I'll see if I can get the name/number and DM you.

--Dim
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Old 06-26-2008, 12:49 PM
 
Location: Charleston, SC
5,615 posts, read 12,793,011 times
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I'd be cautious about putting too many vents in an attic (granted, I have no idea how many too many is). It could overwhelm the side vents and start drawing air from the living space below.
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Old 06-26-2008, 12:53 PM
 
Location: San Antonio
470 posts, read 1,789,849 times
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My ac/gas bill for June was around $170!!! It is up quite a bit from last year, when my highest bill was $120. .........

I work from home so the temp stays at a brisk 78 most of the time. (3300 sq. ft, 2-story, two 14 SEER a/c units).

I swapped out our builders thermostats with Honeywell VisionPro 8000's which have already paid for themselves (I think). Nice gadgets.

Also opted for radiant barrier during construction. We didn't know that we could have paid $700 in order to be Energy Star compliant; however, we feel that we took extra measures to have our home sealed and insulated properly. Our bills reflect that as far as I can tell. I probably shouldn't complain!
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Old 06-26-2008, 01:08 PM
 
Location: SoCal-So Proud!
4,263 posts, read 9,692,196 times
Reputation: 1541
Quote:
Originally Posted by the_dimwit View Post
Do you see some sort of a difference from before? So far, we seem to be doing ok. Bills haven't really gone that high (for us, at least) and the house stays between 76-78. We have an Energy Star home, though, so that makes a bit of a difference. Even still, I've noticed the bedroom closets upstairs (walk-in in all guest rooms, master is down) can get a bit warm if the doors are closed. I figured it was vaulted ceilings that were to blame.

--Dim

We bought a 4 year old home..and the previous owner had it installed. I don't know what the temps were like before..but it keeps the garage temps reasonable. We have the radiant barrier and the extra insulation as well. It's never really blazing in there. No room above the garage.
Our house stays at 75 all the time during the summer. Wife is a SAHM and I work from home when not traveling to client sites.
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