QualityMarkCM Certification Program

QualityMarkCM Certification Program

The QualityMark certification program is a voluntary program that allows participating manufacturers to certify LTTR values for roof insulation products (ASTM C1289, Type II, Class I, Grade 2). The program is administered by FM Approvals and requires all products to be sampled and tested by independent and accredited third-party entities and laboratories. Polyiso is the only insulation product to publish certified LTTR values.


Polyiso manufacturers that participate in the QualityMark program include:

PIMA recommends that you ask the polyiso manufacturer for information on published QualityMark LTTR values.


Accredited laboratories that have been approved for QualityMark LTTR testing include: