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A comment on Ultrawhite BaSO4 Paints and Films for Daytime Radiative Cooling. Parent comment

Re:Ultrawhite BaSO4 Paints and Films for Daytime Radiative C... by dylan604 on Saturday September 18, 2021 @12:14PM (#28577285)
How loud is it in your house when it rains/hails? I have a metal awning covering my back porch, and it is painfully loud during hail (granted not that frequently). Does the attic insulation help deaden/dampen the sound?
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Re:Ultrawhite BaSO4 Paints and Films for Daytime Radiative C... by zbrozek on Saturday September 18, 2021 @12:36PM (#28577448)
I have a metal roof and it's no louder than the shingle roof in my childhood home. I think the big difference vs your awning is that my roof is fully supported by the home's sheathing and is screwed down in many places. This limits the opportunity for the metal to resonate.
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Re:Ultrawhite BaSO4 Paints and Films for Daytime Radiative C... by h2odragon on Saturday September 18, 2021 @12:38PM (#28577472)
It's noticeable; not much louder than a shingle etc roof tho because we have a "R9" fiberglass insulation layer between the roof studs and the metal. A retrofit roof would have roof decking to help with that, and you could probably arrange similar insulation too.

Its nowhere near as loud as an aluminum skinned mobile home.

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