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Video:

World's Whitest Paint: radiative cooling helps to fight climate change

Image:

Wrong - An open eave with no soffit covering can trap rising hot air and embers from a wildfire.

Wrong - An open eave with no soffit covering can trap rising hot air and embers from a wildfire.
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Wrong - Debris in these open gutters can ignite from wind-borne embers and lead to ignition of the roof or fascia board; use leaf screens to keep debris out of gutters in wildfire-prone areas.

Wrong - Debris in these open gutters can ignite from wind-borne embers and lead to ignition of the roof or fascia board; use leaf screens to keep debris out of gutters in wildfire-prone areas.
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Wrong - Displaced concrete tiles can allow ember entry.

Wrong - Displaced concrete tiles can allow ember entry.
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Wrong - Exhaust pipe is not vertical; poorly installed roofing; roofing odd placement for gable vent.

Wrong - Exhaust pipe is not vertical; poorly installed roofing; roofing odd placement for gable vent.
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Wrong - Flue pipe was poorly flashed at roof.

Wrong - Flue pipe was poorly flashed at roof.
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Wrong - House wrap was not properly cut and adhered where the roof meets the wall so water is likely to get behind the house wrap.

Wrong - House wrap was not properly cut and adhered where the roof meets the wall so water is likely to get behind the house wrap.
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Wrong - House wrap was poorly cut at wall interface and not taped leaving wood exposed and vulnerable to water entry.

Wrong - House wrap was poorly cut at wall interface and not taped leaving wood exposed and vulnerable to water entry.
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Wrong - If the soffit is applied directly to the rafter eave, it forms a sloping soffit, which creates a pocket that can trap hot air and embers from a wildfire.

Wrong - If the soffit is applied directly to the rafter eave, it forms a sloping soffit, which creates a pocket that can trap hot air and embers from a wildfire.
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Wrong - Ladder framing method for a gable overhang offers low resistance to wind uplift.

Wrong - Ladder framing method for a gable overhang offers low resistance to wind uplift.
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Wrong - Metal flashing should be used at wall-to-roof junctions.

Wrong - Metal flashing should be used at wall-to-roof junctions.
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Wrong - No metal drip edge is visible and asphalt shingles hang down too far.

Wrong - No metal drip edge is visible and asphalt shingles hang down too far.
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Wrong - Roof deck sheathing nails missed the trusses, potentially weakening the roof in high winds.

Wrong - Roof deck sheathing nails missed the trusses, potentially weakening the roof in high winds.
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Wrong - Roof is missing metal drip edge to cover the edge of OSB roof decking, roof underlayment should be trimmed back, and asphalt shingles are poorly installed.

Wrong - Roof is missing metal drip edge to cover the edge of OSB roof decking, roof underlayment should be trimmed back, and asphalt shingles are poorly installed.
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Wrong - Roof-wall juncture lacks metal flashing and is poorly designed, thus encouraging water entry.

Wrong - Roof-wall juncture lacks metal flashing and is poorly designed, thus encouraging water entry.
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Wrong - Roofing nails should not be placed where they will be exposed.

Wrong - Roofing nails should not be placed where they will be exposed.
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Wrong - Roofs with complex geometries are more susceptible to ignition during a wildfire because they offer more places for burning embers to become lodged.

Wrong - Roofs with complex geometries are more susceptible to ignition during a wildfire because they offer more places for burning embers to become lodged.
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Wrong - Step flashing is missing where the gable meets roof and the valley flashing is incorrectly on top of rather than under shingles.

Wrong - Step flashing is missing where the gable meets roof and the valley flashing is incorrectly on top of rather than under shingles.
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Wrong - The roof insulation panels for this building were not installed in multiple layers with joints offset. The snow melt pattern shows thermal bypasses at the insulation panel joints.

Wrong - The roof insulation panels for this building were not installed in multiple layers with joints offset. The snow melt pattern shows thermal bypasses at the insulation panel joints.
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Wrong - The siding on the chimney is rotten because there is no metal step flashing at the base of the chimney.

Wrong - The siding on the chimney is rotten because there is no metal step flashing at the base of the chimney.
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Wrong - The studs added for support were cut at an angle providing weak support where the stud meets the compression block.

Wrong - The studs added for support were cut at an angle providing weak support where the stud meets the compression block.
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Wrong - There is no step flashing along the base of the gable and the right window is missing sill trim.

Wrong - There is no step flashing along the base of the gable and the right window is missing sill trim.
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Wrong - this building provides no overhangs, minimal window shading, and clear window glass resulting in high solar heat gain.

Wrong - this building provides no overhangs, minimal window shading, and clear window glass resulting in high solar heat gain.
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Wrong - This concrete roof was not adequately attached and reinforced and failed in high winds.

Wrong - This concrete roof was not adequately attached and reinforced and failed in high winds.