Radiant Barrier Experiment - Attic Hatch Cover Winter Experiment

Temperature readings Before and after Radiant Barrier shows how radiant barrier works in an actual attic.

Installing radiant barrier over your existing insulation will help to keep heat in your home, so you can have a more comfortable home.

Save heating cost  by keeping heat in your home - reduce heating the atmosphere.

Radiant Barrier was installed loosly (without any fiberglass insulation)  above  an attic hatch or access. This simple test shows how radiant barrier  warmed this common cold spot.

Before and after Temperature readings.  Note: date and time on photo

Before
	CeilingTemperature 69.9 F  ( about 10" loose fiberglass  insulation above the drywall)
	Attic hatch Temperature 56.6 F Drywall Attic hatch cover  (without any insulation)
	Outside Temperature 30 F

After
	Loosly Install Radiant Barrier above the attic Hatch cover. Note: temperature is noticably warmer as you place the reflective radiant barrier
	Temperature of Attic hatch 19 minutes after radiant barrier was installed 61.8 F
	Temperature of attic Hatch 64 minutes later 62.9 F
	Temperature of ceiling 69.6 F
	Outside temperature 33 F Note: during this experiment  sunlight did not contact the roof surface.

	temperature of attic ceiling the next day 70.7 F
	Temperature of attic hatch the nest day 64.7 F
	Outside Temperature the next day 29 F

Summary:

In this experiment, Radiant Barrier was loosly installed over an attic hatch.  A  temperature increase is quite noticable as you install it. The attic hatch cover became warmer, showing that there is less heat loss resulting from the installation of the radiant barrier.

Before  Radiant Barrier                         69.9 - 56.6 = 13.3 F  Temperature difference 

19 minutes after Radiant Barrier          69.9 - 61.8 =   8.1 F  Temperature difference

64 minutes after Radiant Barrier          69.6 - 62.9 =   6.7 F  Temperature difference 

Next day after Radiant barrier              70.7 - 64.7 =   6.0 F  Temperature difference

(Note: outside temperature rose 3 F during experiment on the first day)

The radiant barrier installed in this application significantly reduced the heat loss.

13.3  - 6 = 7.3 degrees. The attic cover was warmer by 7.3 F.

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