Emissivity & Reflectivity Qualities
The two properties that determine a radiant energy barrier’s strength are its
emissivity and reflectivity quantities. The emissivity not only depends on the
surface temperature, but it also depends on the number between 0 and 1 which is
its rating. The higher this number is, the greater the emitted radiation from
the barrier. This is a very important number to look at when purchasing foil
bubble insulation, because a low emissivity number can lead to less
money being saved on your electric and gas bills.
The other number that plays a large role in the quality of bubble
barriers is the reflectivity. This is a quantifiable number that essentially
measures how much radiant energy is being reflected back once it hits the
reflective material on the foil insulation. It is also generally quantified by a
number between 0 and 1, with a higher number being much more reflected.
Reflectivity can also be measured by percentage as well.
Typical Foil Insulation Installation
are many different options to choose from and many different ways that a radiant
barrier can be installed in your home. Some people opt for a DIY installation
and others opt to hire a contractor or a carpenter to install it for them. Some
of the things you may come across that might increase the cost of installing a
typical foil insulation barrier are:
- Whether it’s installed in a new home or an older home
- Whether it’s installed on the floor of the attic or on the rafters
- If you choose a basic barrier as opposed to one with various options
- Retrofitting that you or your contractor may have to do
These are just a few of the unexpected roadblocks that you may come across when
hiring a contractor to install your foil bubble insulation. Although these
unexpected charges seem like they may be expensive at first, fear not: the
barrier will more than pay for itself in just a few short years.