Spray foam insulation’s air sealing properties are the primary reason for its superiority over fiberglass. In actuality, spray foam insulation outperforms all other types of insulation by incredible margins. Fiberglass, no matter how well it is installed, does not provide an air barrier and allows air to move through it. This allows the two climates (inside, conditioned air and outside, unconditioned air) to combine and create potential condensation inside walls and building assemblies. Without knowing the benefits that spray foam insulation can provide for your home and family, the option could be easily overlooked.