Warranties will not be affected on properly installed systems. Failure to follow these guidelines may result in a particular issue not being warranted, while remaining valid for remaining issues.
The Spray Polyurethane Foam Alliance, an association representing leaders in the SPF industry, has created a guideline for insulating metal buildings with spray polyurethane foam. It can be reviewed by clicking here. More information is available on their website at www.sprayfoam.org.