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ecomodded · 01-12-14, 03:41 PM

I found this on a Gov. website

Most common insulation materials work by slowing conductive heat flow and -- to a lesser extent -- convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. To be effective, the reflective surface must face an air space. Dust accumulation on the reflective surface will reduce its reflective capability. The radiant barrier should be installed in a manner to minimize dust accumulation on the reflective surface.
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it would need to be glued to the ceiling reflective side facing in.

Radiation losses

Radiation losses can be reduced by using special plasterboard that is backed with a sheet of aluminum foil. The shiny metal foil acts as reflector of infrared radiation. Some of the infrared radiation is reflected back into the room and heat losses by radiation are therefore reduced. Metal foil placed behind a radiator that is fixed to an outside wall also helps to reduce heat losses by radiation.
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So you can stop radiation losses.

01-12-14, 03:41 PM	#9
ecomodded Supreme EcoRenovator Join Date: Sep 2012 Location: Vancouver Island,Canada. Posts: 1,037 Thanks: 116 Thanked 100 Times in 87 Posts	I found this on a Gov. website Most common insulation materials work by slowing conductive heat flow and -- to a lesser extent -- convective heat flow. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. To be effective, the reflective surface must face an air space. Dust accumulation on the reflective surface will reduce its reflective capability. The radiant barrier should be installed in a manner to minimize dust accumulation on the reflective surface. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ it would need to be glued to the ceiling reflective side facing in. Radiation losses Radiation losses can be reduced by using special plasterboard that is backed with a sheet of aluminum foil. The shiny metal foil acts as reflector of infrared radiation. Some of the infrared radiation is reflected back into the room and heat losses by radiation are therefore reduced. Metal foil placed behind a radiator that is fixed to an outside wall also helps to reduce heat losses by radiation. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ So you can stop radiation losses.