How Does Reflective Insulation Work

This rate of heat transfer can be quantified for a specific application by an r value.

How does reflective insulation work.

Convection is when heat is transferred through the air inside the attic and heats the insulation and conduction occurs when heat moves through the insulation to the building below. Reflective insulation and radiant barriers work well in warm climates particularly in homes that have. The low emittance metal surface of reflective insulation blocks up to 96 of the radiation and therefore a significant part of the heat transfer. To be effective the reflective surface must face an air space.

A reflective insulation is a material or assembly that reduces the rate of radiant heat transfer across air spaces by use of one or more highly reflective surfaces. Reflective insulation and radiant barriers work well in warm climates particularly in homes with. For foil insulation to be most effective the reflective surface should face an air space. The idea is that this thin material can act as a type of insulation in tight spaces where you cannot put thick fiberglass insulation.

Fiberglass roof insulation works like a blanket spread over your house keeping thermal energy out during the summer and keeping the heat in during the winter. Radiant barriers and reflective insulation systems work by reducing radiant heat gain. Radiation infra red is augmented by convection and conduction. Dust accumulation on the reflective surface will reduce its reflective capability.

Air ducts in the attic asphalt roofing which more easily absorbs heat from the sun little to no shading from trees. The primary function of reflective insulation is to reduce radiant heat transfer across open spaces. Air ducts in the attic asphalt roofing which more easily absorbs heat from the sun little to no shading from trees. To understand how insulation works it helps to understand the basics of heat flow which involves three basic mechanisms conduction convection and radiation.

Radiant barriers and reflective insulation systems work by reducing radiant heat gain. The layer of still air itself gives it a degree of extra insulation provided it is still otherwise it will be taking heat away through convection. Reflective insulation is made from. It is most effective when kept clean and dust free.