4 ms·
My understanding is that you can insulate your way to Title 24 compliance. You just have to have a total ingress performance over some level. Now that said, it
by zbrozek 4y ago
My understanding is that you can insulate your way to Title 24 compliance. You just have to have a total ingress performance over some level.
Now that said, it would still be better for our communities to reflect this energy back out into space to reduce environmental heating. Houses in my area at solar noon have almost half a megawatt of heating potential. By municipal code they are not allowed a roof reflectivity of more than 40%.
- gumby 4y agoI guess having mirrors on all the houses could cause problems for other people, even for flat roofs. But I agree: reflecting the incident beams is important: when it emerges as heat (IR) it can be trapped by GHGs. I had been thinking of the reflectivity benefit rather than the reduction in air comditioning.
- zbrozek 4y agoSpecular reflection (a mirror) would be ideal for sending energy back out into space most of the time but would occasionally death-ray your neighbors. White paint isn't quite as good (some of the diffuse reflection will hit non-reflective things) but it also won't incinerate anything. Feels like a good compromise.