Folding Heat Shield to Cool My Workshop...Using Science!

The roll-up door in my workshop is a huge problem in battling the summer heat, so I built a set of panels to act as a radiant barrier, which I can fold out of the way when I need to use the door.

Please see the pinned comment for a little more explanation about the science.

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SEE ALSO
▶ Fitting an Entire Loft Staircase in a Tight Space:    • Fitting an Entire Loft Staircase in a...  

RADIANT BARRIERS AND AIR GAPS
The method I referenced, in which the radiant barrier is applied directly to the door, does have an effect, as the foil has a low emissivity. In other words, when the foil is in contact with the door, the foil itself heats up through conductivity, but it doesn't emit as much of that heat as the door alone would. However, the effect is significantly lower than that of the foil's reflective property. A gap between the door and the radiant barrier allows the foil to reflect most of that heat back, without itself heating up.

If you live in a cold climate, and you're trying to keep heat in, however, the method above works as intended. The air gap is on the inner side, reflecting heat back into the building.

Follow the links below for further explanation.

▶ Radiant Barriers - Must Have an Air Space:    • Proof That Foil Radiant Barriers Don'...  
▶ Radiant Barrier - Why Is Air Gap or Space Required?:    • Radiant Barrier Foil Insulation - Why...  
▶ Understanding Reflectivity vs Emissivity:    • Radiant Barrier Department Of Energy ...  

CHAPTERS
00:00 - Making the Test Beds
01:00 - The Problem
02:22 - Testing Solutions
06:47 - Building the Panels
15:41 - Reviewing the Data
18:48 - Completing the Panels
24:08 - The Panels in Action

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