Timeline for How are Clopay Intellicore garage door R-values so high?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
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| Oct 17, 2021 at 17:57 | answer | added | Chris | timeline score: 0 | |
| Nov 14, 2019 at 0:21 | answer | added | LDC1615 | timeline score: 4 | |
| Mar 13, 2019 at 23:18 | history | edited | Bungle | CC BY-SA 4.0 |
add context
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| Mar 13, 2019 at 23:10 | comment | added | Ed Beal | By changing the type of poly they get a higher value that was my point | |
| Mar 13, 2019 at 23:06 | comment | added | Bungle | @EdBeal I have, although I'm sure they're not using anything like space shuttle tiles in their residential garage doors. ;-) Their website states that it's an injected polyurethane foam, which in my experience tops out around R-7 to R-8. | |
| Mar 13, 2019 at 23:04 | comment | added | Bungle | @NateStrickland I think the 3-layer probably refers to (1) steel outer shell, (2) foam inner layer, (3) steel inner shell. That's at least how they depict it in their cross section illustration and describe it on their website: "This form of insulation is comprised of a polyurethane foam that is injected in between the door’s steel layers, expanding to fill all of the nooks and crannies of the door. The foam bonds to the door’s frame as it expands, further increasing the strength of the door and making it less susceptible to dents." | |
| Mar 13, 2019 at 23:01 | vote | accept | Bungle | ||
| Mar 13, 2019 at 22:22 | comment | added | Ed Beal | Have you ever seen the tiles on the space shuttle they are only ~1/4" thick and have an incredible r value I remember a demonstration where one side was heated with a torch and the opposite side had a ring full of liquid nitrogen. It depends on the materials used. | |
| Mar 13, 2019 at 21:57 | answer | added | Nate S. | timeline score: 3 | |
| Mar 13, 2019 at 21:46 | comment | added | Nate S. | Are you sure the overall door dimensions are 2", rather than a 2" foam layer + some extra for other layers? The only place on the page it says 20.4 it also says 3-layer, and specifies the foam itself as 2". | |
| Mar 13, 2019 at 21:41 | comment | added | Bungle | Thanks, @NateStrickland - R-7.4 is still a far cry from R-10.2, though. I'm not aware of any foam insulation that approaches R-10.2 per inch. | |
| Mar 13, 2019 at 21:03 | comment | added | Nate S. | I'm going to go with the Wikipedia page is just out of date. Here's an example from a quick google search that claims 7.4 per inch: demilec.com/Products/Closed-Cell/… | |
| Mar 13, 2019 at 21:01 | comment | added | Nate S. | The source links in that section of the wikipedia article you linked are dead, so I'm not so sure it's "state-of-the-art" | |
| Mar 13, 2019 at 20:04 | history | edited | Bungle | CC BY-SA 4.0 |
address comments
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| Mar 13, 2019 at 17:34 | comment | added | dandavis | the rvalue seems to be quoted for the whole door, not just the foam. | |
| Mar 13, 2019 at 13:10 | comment | added | Kris | Interesting question but it is not a diy home improvement question. Perhaps the density of the foam is greater since it is produced under controlled factory conditions. | |
| Mar 13, 2019 at 13:08 | comment | added | Solar Mike | Because the door is not pure foam - there are other elements... | |
| Mar 13, 2019 at 9:11 | history | asked | Bungle | CC BY-SA 4.0 |