Open & Closed Cell
There are two main types of spray foam insulation: closed-cell spray foam which provides the highest R-value per inch at (6.5) and open-cell spray foam which offers an R-value of about 3.5 per inch.
Cellulose & Fiberglass
Fiberglass and cellulose are two traditional insulation materials that have a lower cost than spray foam and lower R-values and energy efficiency.
If your home or office has too much noise pollution, spray foam insulation can be the solution.