the assembly?
Yes. The increased thermal value of the insulation
could allow higher temperatures to
build up in the supporting structural membranes
during a fire, increasing the chances
of assembly failure.
• If an insulation manufacturer changes the
formulation of its product, will roofing systems
that have been granted UL approval using the
insulation need to be retested to maintain their
fire rating?
The systems may need to be tested with
the new insulation if the insulation formula
is changed significantly. Using the information
UL has collected about the effects of formula
changes on fire-resistance, UL's
engineers can determine whether a particular
change is extensive enough to require additional
testing.
• Do any of UL's wind-uplift tests correspond
to those