Insulation of a house is very important. It helps to stop diseases and the discomfort of a house that keeps the same temperature with the outside world no matter what you do. It is very discouraging to try to warm yourself during the winter and find that it is impossible. What makes it impossible is the fact that your house walls have very many cracks that need to be covered so that air and heat do not get transferred in and out of your house continuously.

Important factor during insulation

Heat and air are very important factors that should be considered during insulation because if the air keeps getting into the house, it will never be warm. Again, if you have your gas or electricity on and still the house is not warm, it because the heat is passing through the wall to the outside world. This can be very costly for a house owner because the prices of electricity and gas keep rising again and again. Therefore, in order to get an energy bill that does not eat too much into your pocket, it is important that you get an insulation that favors you.

Spray foam insulator and the fibre glass

The most known insulators include spray foam insulator and the fibre glass.  In order to choose from them, there is always a need to measure something called the R-value. This value is got by getting to know which insulator does not allow the transfer of heat through it easily. The R-value though cannot be discussed without knowing the various methods through which heat is transmitted from one material to another.

There are three ways of heat transmission: conduction, convention and radiation.  Conduction is transfer of heat through touch or physical contact. The R-value measured against conduction will always be higher for the fiber glass than for the spray foam insulator. Spray foam insulator allows heat to pass through it by contact so the value will be very low. When you compare the spray foam insulator against convention, which is transfer of heat through air, it will have the highest R –value because the foam does not allow air to pass through it

This means that the fiber glass is more likely to allow air and more to pass through it than the foam can. This means that the R-value for the fiber is low, when the heat is being transferred through convection and radiation. Therefore, do not really use the R-value to choose between the insulators.

It is important that potential customer should note that the R-values are calculated in air tight conditions. These conditions are not ideal because the spray foam insulator will be outside the house and the prevailing environment will not be airtight; rather, it will be sometimes hot, cold and moist. The spray foam insulator has very many other benefits. It does not wear out fast and it sound proof.  Therefore, the R-values are quite misguiding and should not be taken too seriously when making the selection.