Why would I pay twice as much for LaPolla FoamLok when I could just use Fiberglass Instead?
One has to look at the complete cost of something they are putting into their house before making a decision. The cost of insulation is small compared to the ongoing heating and cooling costs of your home after you move in. Since your energy use is cut in half with FoamLok anyone can do the math and realize that after about five years the cost of insulation, heating fuel, and electricity for cooling is the same for both FoamLok foam and fiberglass. After that time your energy savings with FoamLok will put cash in your pocket every year. That's why we call fiberglass the $30,000 mistake!
How can R-20 of LaPolla FoamLok outperform R-38 of fiberglass?'
R-Value is one of the most misused and misunderstood measurements in the world. The test results are determined in a 75-degree (F) lab with no wind load and ideal humidity. In such conditions the two insulation types are identical with respect to heat transfer. Unfortunately, insulation isn't needed in those conditions. However, once the insulation is installed in a home in real world conditions, the heat loss/gain of fiberglass and cellulose are outrageous since cold and warm air freely move about them through convection. FoamLok is an air barrier AND it is physically adhered to the wood framing members of a structure thus minimizing air infiltration. Think of fiberglass as a screen and FoamLok as a window. Coincidentally, most furnace filters are made from fiberglass. These filters are obviously designed to allow the free movement of air through them.