The code for spraying intumescent coatings over spray polyurethane foam has changed. Using an intumescent coating as an alternative thermal barrier over spray polyurethane foam (SPF) is an effective, efficient means of fire prevention. The code for alternative thermal barriers has recently changed and the new Acceptance Criteria will be in effect October 2017. This means that if you spray intumescent coatings over SPF, you need to be aware of the changes and how they affect you. But before we look at the future, let’s look at the past. How did we get to this point? And why?
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