There are a number of insulation systems such as fiberglass, foam board and spray foam insulation, that can be used for a steel warehouse. Each system has its benefits based on the requirements you have. For example, spray foam insulation is very effective as it can limit air movement which in turn decreases the amount of energy used to heat the building space. Knowing which method works best for the insulation of the steel warehouse you have is vital in saving energy costs and ensuring work comfort.