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09-16-2012, 10:15 PM #14Professional Member*
- Join Date
- Mar 2009
- Mount Holly, NC
I get comments all the time that the rain must sound awesome with a metal roof, but the aluminum doesn't make any noise from the rain, it's a dull metal that's absorptive of impact sound.The TRUE highest cost system is the system not installed properly...
The three big summer hearththrobs...
The A/C repairman
09-19-2012, 09:45 AM #15Mark Beiser wrote:
I'd like to put a white metal roof on my house, but my house would look silly with a white roof, and I'm concerned about the reflection off of it causing problems for my neighbors when the sun is in certain positions.
If I had no option but to use a "shingle-like" metal product due to neighbor or HOA concerns, I'd seriously consider laying down at least one thickness of foil faced foam insulation sheathing board, then the battens, then the metal shingles. That would likely make for one seriously cool performing roof, even with darker shingle colors."In this house we obey the laws of thermodynamics!"
- Homer Simpson
09-19-2012, 10:19 AM #16
Even with the extreme hot weather the last 2 summers, and 2 computers burning $500 worth of electricity a year doing distributed computing projects for disease research, I use less than $2000 a year worth of electricity at current rates.
This is in a house with only 2-4" of insulation in the attic, 46 year old single pane aluminum frame windows, and a 15 year old over sized 10 SEER AC system.
I have to balance the cost of what I'd like to do to the house against the relatively low potential return in real energy savings, and the limit to how much potential to improve the value of the house there is.
Basically, the problem I have with this house is that if I do much more than a radiant barrier, good passive ventilation, and R-36 insulation, the ROI flips to infinity.If more government is the answer, then it's a really stupid question.
09-19-2012, 01:19 PM #17
If my decision re: roofing material had been based strictly in ROI for energy payback, I would likely have gone with white colored asphalt with a reflectivity of 0.29 or greater, or the less expensive reflective metal shingle options. I realize standing seam metal is not a viable option for all, and many do not like the look of it. For us it was an opportunity to enhance the appearance of the house, reduce attic heat gain, increase high wind resistance (which may increase structure survivability in a tornado F2 or less), and reduce risk of storm damage in one fell swoop. And...frankly, we needed a new roof...this wasn't a boutique decision."In this house we obey the laws of thermodynamics!"
- Homer Simpson
09-19-2012, 01:45 PM #18
I do want some sort of metal roof when it is time to replace what I have.
When the time comes, it will be somewhat expensive either way because I'll need to replace the decking too.
The decking is ok now, but has some delamination, and is a little spongy in some places when I walk on it, so it won't really take another reroof.
I need a good hail storm so I can get some of my money back from my insurance company to help pay for it.If more government is the answer, then it's a really stupid question.
09-24-2012, 03:19 PM #19
Contacted another siding contractor through the James Hardie website last Monday. He visited on Tuesday, his roofing "sub" visited on Wednesday, and by Friday evening I had detailed proposals in hand for both the roof replacement and new siding, including specs regarding enhanced off-ridge venting to replace the inadequately sized existing ridge vent.
The siding proposal was quite reasonable, including new vapor barrier, whole house re-paint (primer plus 2 coats), and re-installation of screening that has to be removed to install siding in the atrium. The roofing estimate was a bit higher than I'd received from others, but it does include a 15 year workmanship warranty from the installer compared to 5 years from the others. Unfortunately, the roofer has been in business less than 10 years, so the warranty may not be worth what they're charging.
I may still shop around on the roof and ask the siding contractor if he will consider using a different sub.
09-24-2012, 07:13 PM #20
A friend of mine bought a new car from a dealership that was having a going out of business sale, got a great deal too.
They even gave him a discount on their in house extended service plan....
I still haven't let him put that episode to rest.If more government is the answer, then it's a really stupid question.
09-25-2012, 05:13 PM #21
I began monitoring my attic temperatures on Sunday, a day that topped out at 96 degrees. On days like that, even this time of year with a reduced sun angle, I would expect normally to see attic temps over 100 degrees at solar noon. My attic was around 82 degrees. When the outdoor ambient temperature finally leveled out at 96, the attic temp caught up and leveled out at the ambient air temp. But it took six hours from the time I got the temp sensor activated to get there. In that time span, the outdoor ambient temp was above attic temp.
Yeah, there is something to this reflective roofing scheme, after all."In this house we obey the laws of thermodynamics!"
- Homer Simpson