Reversing Global Warming with......white paint??

[magicguido]

[Wicked Blue]

1. Roofs that are painted white require less air conditioning

because they reflect heat energy that would otherwise be absorbed into the structures.

I don't watch videos, but in the past I have written articles about white roofs and the energy savings from them. This was in the early 2000s.

When we replaced our roof, we asked the roofer to use the whitest shingles available at that time. The roofer also installed ridge venting and soffit vents to increase air flow in the attic.

Prior to the roof replacement, the ceilings in our house felt extremely hot when touched on warm summer days. Following the installation of the vents and white shingles, I could touch a ceiling and it would feel no warmed than the ambient room temperature.

[PoliticAverse]

2. And buildings with white roofs require more heating in the winter. n/t

[ornotna]

3. Not an issue

Here in Florida. I had my roof coated white and it makes a huge difference in the summer.

[Trust_Reality]

4. More heating in the winter is an insulation issue.

[rickford66]

5. Dark roofs in Winter promote condensation.

Best to keep roofs and thus attic spaces cool all year round. My metal roof was installed in 2011 and was the whitest color available and I got energy credits on my Federal Taxes. Water vapor eventually gets into attic or space under the roof coverings. When it's cold, hoarfrost may form , then sublimate harmlessly. If warm, condensation forms causing damage such as rot. My buddy had a green metal roof installed because it looked nice. Idiot. Also, don't install a metal roof over shingles. One hailstorm and you'll have a dimpled roof. Plus the shingles will add insulation where you don't want it.

[KT2000]

6. Am I missing something?

This seems to be a method to reduce effects of global warming but I don't see how it is going to reverse global warming.